![functionality of gold nanoparticles
incorporating borate glasses in the
nanosecond pulse regime
Swetha
29. Sm 3+ doped Ag NPs nucleated alkali
borate glasses with enhanced
photoluminescence and spectroscopic
attributes
B.N. Swetha Andm. K.
Kokila
35
30. Recent developments of advanced
luminescent glasses for reddish
orangeemitting device applications
R. Rajaramakrishna 36
31. Study of Structural, Microstructural,
Vibrational and Low Temperature Magnetic
Properties of NiFe 2 O 4 -CoCr 2 O 4
Nanocomposites
K. Manjunatha,
Jagadeeshaangadi V,Hsin-
Hao Chiu,Ming-Kang
Ho,Tsu-En Hsu,And Sheng
Yun Wu
37
32. Influence of lithium potassium zirconate
nanoparticle on polyvinyl alcohol thin films
Dr. Chethana M 38
33. Synthesis and characterisation of
polyaniline (pani) -
[Cu 2 Cl 4 L 3 ].2H 2 O nanocomposites by
inverted emulsion polymerization
Ramanath Prabhu And T.
Jeevananda
39
34. Highly conductive organic thin films
of PEDOT–PSS: silver nanocomposite
treated with PEG as a promising
thermo-electric material
Apsar Pasha, Jagadeesha
Angadi V
40
35. Electrochemical Sensor for Antioxidants in
Portulaca oleracea Medicinal Plant,
Aishwarya M Mishrikoti
,Faizun Khalil Naikwadi,
Nilesh Chougala, Raghu S,
VidyaKamble, Shidaling
Matteppanavar
41
36. Electrochemical Sensor for Obesity
Reducing Acalypha indica Medicinal
Plant
Akshata Vasawade, Rakesh
Jambagi, Chetan Hosatti,
Aditya J Lengade, Sunil Patil,
Shidaling Matteppanavar
42
37. Optical and thermal Properties of copper
oxide nanoparticles embedded polyaniline
nanocomposites
Niranjana M, Ganesh D B,
Ganesh N Yallappa,
Manjunath R S, Nataraja G,
Moulya S
43
38. Synthesis and characterization of Ni 1-x Gd
x O thin films by spin coating technique
Srinivasa N V, Mahesh H M’
Basavaraj Angadi
44
39. Spinel CoFe 2 O 4 -Activated carbon
nanocomposites: Photocatalytic dye
degradation and biomedical applications
Manikandan Ayyar And B.
Catherin Meena
45
40. Effect of Al/Ga and Si on the magnetic
properties of Nd 2 Fe 17 B 0.05
Srilatha.Y,Vagdevi. K,
Revathi. N, Asharani. B. M
46
41. Structural comparison of bulk Cobalt and
Carbon Encapsulated Cobalt Nanopowder
Manjunatha M 47](https://image.slidesharecdn.com/abstractsofinternationalconferenceonrecenttrendsinadvancedmaterials-240625040541-58b480ca/85/The-Science-of-Renewable-Energy-Classroom-Projects-9-320.jpg)
![International Conference on Recent Trends in Advanced Materials-2023
School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 4
Synthesis, Characterization And Antimicrobial Activities of
Transition Metal Complexes Derived From 1-(((4,6-
dimethylpyrimidin-2-yl)imino)methyl)naphthalen-2-olSchiff Bases
D.T. Sakhare
U.G, P.G. & Research Centre, Department of Chemistry, Shivaji, Art’s, Comm. & Science College
Kannad.Dist. Aurangabad.431103, (M.S.) India.
E-mail- sakharedhondiram@yahoo.com
________________________________________________________________
Abstract:
A novel Schiff base ligand has been synthesized by the condensation of 2-
amino-4,6-dimethylpyrimidine and 2‑hydroxyl-1-naphthaldehyde. Metal complexes
of the Schiff base were prepared by the reaction of the Schiff base and iron nitrate in
ethanol solution. The complexes isolated, washed and dried. The Schiff base is pale
yellow, while cobalt complexes is light yellow.The synthesized compounds have been
characterized by FT-IR, 1
H-NMR and UV-Vis techniques for the ligands and FT-IR,
UV-Vis, all reactions monitored by TLC, molar conductivity and magnetic
susceptibility measurements for the corresponding complexes. General formula of
complexes are [M(L1)2(H2O)2]. The complexe is paramagnetic. The results of the
molar conductivity measurements indicated that all complexes are non-electrolytes in
(DMSO). An octahedral geometry for all the complexes of. The ligands are bidentate,
(L₁) through phenolic (OH) and azomethine nitrogen.The ligand and its complexes
were screened for their antifungal and antibacterial activity against Aspergillus niger,
Penicillium chrysogenum, Fusarium moneliforme, Aspergllus flavus and Escherichia
coli, Salmonella typhi, Staphylococcus aureus, B. subtilis. The result indicated that the
complexes exhibited good antifungal and antibacterial activities.
Keywords:Heterocyclic Schiff bases, 2‑hydroxyl-1-naphthaldehyde, 2-amino-4,6-
dimethylpyrimidine, Antimicrobial Activity.](https://image.slidesharecdn.com/abstractsofinternationalconferenceonrecenttrendsinadvancedmaterials-240625040541-58b480ca/85/The-Science-of-Renewable-Energy-Classroom-Projects-25-320.jpg)
![International Conference on Recent Trends in Advanced Materials-2023
School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 39
SYNTHESIS AND CHARACTERISATION OF POLYANILINE
(PANI) - [Cu2Cl4L3].2H2O NANOCOMPOSITES BY INVERTED
EMULSION POLYMERIZATION
Ramanath Prabhu1*
and T. Jeevananda2
1
Department of Chemistry, RNS Pre-University college, Bangalore-560 098.
2
R & D Centre, Department of Chemistry, RNS Institute of Technology, Bangalore-560 098.
*email: Prabhu.ramanath14@gmail.com
ABSTRACT:
Inverted emulsion polymerization technique was adopted to prepare composite
of conducting polyaniline (PANI) and [Cu2Cl4L3].2H2O complex [L= m-aminophenyl
benzimidazole] by utilizing novel benzoyl peroxide as an oxidizing agent. Polyaniline
ratio was varied between 10 to 90% based on the yield percentage of PANI. The
prepared polyaniline (PANI) - [Cu2Cl4L3].2H2O nanocomposites were characterized
by Fourier-transform infrared spectra, Four probe conductivity, X-ray diffraction,
Thermogravimetric analysis and Scanning electron microscopy.
The FTIR spectrum of pure PANI and its composites with [Cu2Cl4L3].2H2O shows
the vibrational bands due to N-H stretching (2941-3009cm-1
), quinoid (1621cm-1
) and
benzenoid ring stretching (1350cm-1
), etc. Conductivity of pure polyaniline was seen
to be 1.8S/cm and upon the addition of [Cu2Cl4L3].2H2Ocomplex in increasing order
the conductivity decreases. X-ray diffraction of PANI- [Cu2Cl4L3].2H2O nano-
composite showed two crystalline peaks at 20.83 and 25.46 (2Ѳ). TGA thermogram
of PANI- [Cu2Cl4L3].2H2O nano-composites (50/50) undergoes three step weight loss
in the temperature range 32-74, 74-280 and 280-5430
C for first, second and third with
a mass loss of 5, 20 and 21% respectively. Thermograms reveals that the thermal
stability of pure PANI was slightly improved by the incorporation of
[Cu2Cl4L3].2H2O. Coating of polyaniline on [Cu2Cl4L3].2H2O was confirmed by SEM
pictures.
Key words: polyaniline-[Cu2Cl4L3].2H2O nanocomposites; inverted emulsion
polymerization; conductivity.](https://image.slidesharecdn.com/abstractsofinternationalconferenceonrecenttrendsinadvancedmaterials-240625040541-58b480ca/85/The-Science-of-Renewable-Energy-Classroom-Projects-60-320.jpg)
![International Conference on Recent Trends in Advanced Materials-2023
School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 101
Crystal structure and magnetic properties of (1-x)LiZn2.5Ti2.5O8 –
xLiFe5O8 spinel-structured solid solution ceramics
Anton A. Zabolotnyi, Stanislav P. Kubrin, Nikita V. Ter-Oganessian
Research Institute of Physics, Southern Federal University,
344090, Rostov-on-Don, Russian Federation
e-mail: zabolotnyi@sfedu.ru
Abstract: Compounds with the spinel structure AB2X4 (A and B – metals, X –
O, S, Se, Te) demonstrate a wide variety of compositions due to the wide substitution
possibilities both in cationic A and B and in the anionic sublattice X. This also
determines the variety of physical properties of spinels, which allows us to consider
them as promising functional materials. The diversity of magnetic phenomena in
spinelsmakes promising the search for compounds or solid solutions that are
multiferroic or exhibit a linear magnetoelectric effect (ME),however a relatively small
number of suchspinels have been discovered [1]. A necessary condition for the
occurrence of a magnetoelectric couplingis the absence of a center of inversion of the
crystal structure. In spinels, the presence of different kinds of atoms in cationic
sublattices can suppress the center of inversion due to the possibility of atomic
ordering. Thus, LiFe5O8 spinel has high ferrimagnetic ordering temperatures and
exists in two modifications: disordered (sp.gr. Fd3
̅m) and ordered (sp.gr.P4132 and
P4332). The latternoncentrocymmetric structure is characterized by a 1:3 atomic
ordering of Li and Fe in the B-sublattice, but admits, however, only a quadratic ME.
Previously, the existence of linear ME in spinels of type 𝐴1/2
′
𝐴1/2
′′
𝐵2𝑋4 with 1:1
atomic ordering in the A-sublatticewas predicted, which leads to a decrease in
symmetry to F4
̅3m [2], however, such compounds have not yet been experimentally
detected. In this paper, the synthesis of solid solutions (1-x)LiZn2.5Ti2.5O8 –
xLiFe5O8was carried out by the solid-phase method. The crystal structures of the
obtained solid solutions were investigated by X-ray diffraction analysis and refined by
the Rietveld method, the magnetic ordering temperatures and the local crystalline
environment of iron were studied by the Mössbauer spectroscopy method, and
magnetic hysteresis loops were studied at room temperature.
The work was carried out with the financial support of the Ministry of Science
and Higher Education of the Russian Federation (State assignment in the field of
scientific activity, project № FENW-2023-0015).](https://image.slidesharecdn.com/abstractsofinternationalconferenceonrecenttrendsinadvancedmaterials-240625040541-58b480ca/85/The-Science-of-Renewable-Energy-Classroom-Projects-122-320.jpg)
![International Conference on Recent Trends in Advanced Materials-2023
School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 118
Crystal structure and magnetic properties of (1-x)LiZn2.5Ti2.5O8 –
xLiFe5O8 spinel-structured solid solution ceramics
Anton A. Zabolotnyi, Stanislav P. Kubrin, Nikita V. Ter-Oganessian
Research Institute of Physics, Southern Federal University,
344090, Rostov-on-Don, Russian Federation
e-mail: zabolotnyi@sfedu.ru
Compounds with the spinel structure AB2X4 (A and B – metals, X – O, S, Se,
Te) demonstrate a wide variety of compositions due to the wide substitution
possibilities both in cationic A and B and in the anionic sublattice X. This also
determines the variety of physical properties of spinels, which allows us to consider
them as promising functional materials.
The diversity of magnetic phenomena in spinelsmakes promising the search
for compounds or solid solutions that are multiferroic or exhibit a linear
magnetoelectric effect (ME),however a relatively small number of suchspinels have
been discovered [1].
A necessary condition for the occurrence of a magnetoelectric couplingis the
absence of a center of inversion of the crystal structure. In spinels, the presence of
different kinds of atoms in cationic sublattices can suppress the center of inversion
due to the possibility of atomic ordering. Thus, LiFe5O8 spinel has high ferrimagnetic
ordering temperatures and exists in two modifications: disordered (sp.gr. Fd3
̅m) and
ordered (sp.gr.P4132 and P4332). The latternoncentrocymmetric structure is
characterized by a 1:3 atomic ordering of Li and Fe in the B-sublattice, but admits,
however, only a quadratic ME. Previously, the existence of linear ME in spinels of
type 𝐴1/2
′
𝐴1/2
′′
𝐵2𝑋4with 1:1 atomic ordering in the A-sublatticewas predicted, which
leads to a decrease in symmetry to F4
̅3m [2], however, such compounds have not yet
been experimentally detected. In this paper, the synthesis of solid solutions (1-
x)LiZn2.5Ti2.5O8 – xLiFe5O8was carried out by the solid-phase method. The crystal
structures of the obtained solid solutions were investigated by X-ray diffraction
analysis and refined by the Rietveld method, the magnetic ordering temperatures and
the local crystalline environment of iron were studied by the Mössbauer spectroscopy
method, and magnetic hysteresis loops were studied at room temperature.
The work was carried out with the financial support of the Ministry of Science
and Higher Education of the Russian Federation (State assignment in the field of
scientific activity, project № FENW-2023-0015).](https://image.slidesharecdn.com/abstractsofinternationalconferenceonrecenttrendsinadvancedmaterials-240625040541-58b480ca/85/The-Science-of-Renewable-Energy-Classroom-Projects-139-320.jpg)
![International Conference on Recent Trends in Advanced Materials-2023
School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 135
A theoretical DFT/HSE06 investigation of metallic doping Nb,
Fe and Ni doping in MgB2 material and effect on crystalline and
electronic structure.
Guilherme Bonifácio Rosa1
, Sérgio Ricardo de Lázaro1
, Luis Henrique da
Silveira Lacerda2
1
Universidade Estadual de Ponta Grossa (UEPG), 2
Universidade Federal de
Santa Catarina
email:gbonifacioros@gmail.com / srlazaro@uepg.br
Abstract
The MgB2 compound finds extensive use in superconductor research and
electronic device development. Literature documents the modification of this material
through the introduction of transition metals at the Mg site. This includes employing
MgB2 for cost-effective fabrication of superconductor wires, showing promise for
electronic and magnetic resonance device applications. The material's hexagonal
P6/mmm space group provides adaptability for alterations involving transition metals
at the Mg site [1].
Computational simulations conducted in this study utilized the DFT/HSE06
methodology within the CRYSTAL17 software, complemented by the VESTA
viewer. Specific Gaussian basis sets were assigned to Mg, B, Ni, Fe, and Nb atoms,
denoted as 8-511G, m-6-311G(d), TZVP, s8411p6411d441, and 986-31(631d)G,
respectively. The material Mg0.875X0.125B2 (where X = Nb, Fe, and Ni) was
modeled within a 2x2x2 supercell, focusing on the Mg site. Investigation of the
electronic characteristics relied on the analysis of Electronic Band Structure (EBS)
and Density of States (DOS).
Comparison of quantum simulations for MgB2 with literature's reported cell
parameters (a = b = 3.073 Å and c = 3.553 Å) confirms its robust crystalline structure
calculated. The introduction of Ni, Fe, and Nb dopants causes minor distortions in the
a and b parameters, while a significant distortion occurs in the c parameter.
Specifically, Nb, Ni, and Fe doping leads to a contraction in the c parameter,
indicating layer approximation. Examination of the Electronic Band Structure reveals
that the presence of magnetic cations in Fe and Ni-doped materials induces the
formation of a Dirac Cone in the beta channel at symmetry point A. In contrast, the
Dirac Cone appears in both the alpha and beta channels at Г and A points for Nb-
doped material. Furthermore, the Dirac Cone profile is more pronounced in Fe and
Ni-doped materials, with clearer intersection points among the Bands.](https://image.slidesharecdn.com/abstractsofinternationalconferenceonrecenttrendsinadvancedmaterials-240625040541-58b480ca/85/The-Science-of-Renewable-Energy-Classroom-Projects-156-320.jpg)
![International Conference on Recent Trends in Advanced Materials-2023
School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 136
DFT quantum simulation on the magnetic states in the
SrFeO3 material
Guilherme Bonifácio Rosa1
, Sérgio Ricardo de Lázaro1
, Luis Henrique da
Silveira Lacerda2
1
Universidade Estadual de Ponta Grossa (UEPG), 2
Universidade Federal de
Santa Catarina
email:gbonifacioros@gmail.com / srlazaro@uepg.br
Abstract
The Goodenough-Kanamori-Anderson model(GKA) [1], characterizes
electronic superexchange, illustrating how magnetic coupling between two magnetic
sites occurs through a non-magnetic barrier like an oxygen (O) atom. Understanding
this behavior in a Pm-3m cubic crystallographic arrangement presents a challenge. To
address this, DFT quantum simulations using the HSE06 functional were performed
within the CRYSTAL17 software. Gaussian basis sets, namely HAYWSC-
311(d11f)G, 86-411d41G, and 8-411d11G, were utilized to describe Sr, Fe, and O
atoms respectively.
A supercell of size 1x1x2 was constructed to investigate the magnetic ordering on the
[Fe-O-Fe] connection within two [FeO6] magnetic clusters, both in ferromagnetic
(FM) and antiferromagnetic (AFM) configurations, while considering the presence of
an oxygen vacancy (Vo) as a perturbation. Electronic profiles were evaluated through
analysis of the Electronic Band Structure (EBS) and Density of States (DOS).
Comparing the structural data with experimental literature [2], the crystalline structure
displayed lattice parameters consistent with prior findings. Magnetic ordering in the
simulated SrFeO3 (SFO) structure matched the literature, where an AFM magnetic
ordering was reported. Upon introducing the Vo perturbation to create SFV material,
it was observed that the Vo preserved the AFM ordering. The EBS indicated metallic
behavior for the SFO material, while the SFV material exhibited semiconductor
characteristics due to the Vo presence.
The interaction between these electronic states, characterized by an overlap, revealed
a significant intermetallic bond interaction. This interaction could be understood as a
molecular path for the GKA model. In both SFO and SFV materials, an intense
superexchange effect between Fe atoms occurred, facilitated by the O non-magnetic
atom serving as a bridge to link the two magnetic clusters.](https://image.slidesharecdn.com/abstractsofinternationalconferenceonrecenttrendsinadvancedmaterials-240625040541-58b480ca/85/The-Science-of-Renewable-Energy-Classroom-Projects-157-320.jpg)
![International Conference on Recent Trends in Advanced Materials-2023
School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 176
Structural, Magnetic and Photoluminescence Properties of Cu Doped
CdWO4 Nanorods
Ming-Kang Ho,a
Ashish Chhaganlal Gandhi,a,b
K. Manjunatha,a
Chia-Liang Cheng,a
and Sheng Yun
Wua,*
a
Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan
b
Department of Electrical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
*Corresponding authors:810814201@gms.ndhu.edu.tw(Ming-KangHo),
sywu@gms.ndhu.edu.tw (SYWU)
ABSTRACT:
CdWO4with monoclinic wolframite structure is a well-studied material in the
tungstate family with tremendous promise in a variety of applications. This work
shows significant influence of magnetic and optical characteristics of hydrothermally
produced single crystalline CdWO4 nanorods with adjustable replacement of Cu2+
ions at the Cd2+
site.With increasing Cu concentration (0 to 10%), the mean diameter
(62 to 40 nm) and length (341 to 184 nm) decreased dramatically, resulting in an
astounding 16% reduction in the aspect ratio. XRD results confirms the single-phase
monoclinic structure. The development of a gradual shift from diamagnetic to
increased magnetization in terms of Cu content was attributed to replacing [CdO6]
with the small ferromagnetic [CuO6] cluster in the crystal lattice.Cu-doping produced
intermediated energy level was given a redshift of 0.8 eV in bandgap energy and a
relative 46% reduction in internal quantum efficiency, permitting direct transition
between the valence band and conduction band proven by XEOL studies.Our findings
indicate that Cu dopant-induced nucleation in CdWO4 influences energy transfer and
structural modifications rather than direct radiative decay from Cu sites.
Keywords: Cu-doping, Cadmium tungstate;Magnetism,Photoluminescence, XEOL.](https://image.slidesharecdn.com/abstractsofinternationalconferenceonrecenttrendsinadvancedmaterials-240625040541-58b480ca/85/The-Science-of-Renewable-Energy-Classroom-Projects-197-320.jpg)
![International Conference on Recent Trends in Advanced Materials-2023
School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 196
Indirect experimental investigations on the half-metallicity of
Mn2V0.5Co0.5Z(Z=Ga,Al) compensated ferrimagnets
P V Midhunlal1*
, J Arout Chelvane 2
, P D Babu 3
, N Harish Kumar 4
* midhunlalpv3@gmail.com
1. Department of Sciences and Humanities, School of Engineering and Sciences, Christ (Deemed-to-
be University), Bangalore- 560074, India.
2. Defense Metallurgical Research Laboratory, Kanchanbagh (PO), Hyderabad-
500058, India.
3. UGC-DAE Consortium for Scientific Research, Mumbai Center, R-5 shed, BARC,
Trombay, Mumbai-400085, India.
4. Department of Physics, Indian Institute of Technology-Madras, Chennai-
600036, India.
Abstract:
Half-metallic compensated ferrimagnets with high Curie temperature are
potential candidates for spintronic applications due to their zero moment and high
spin polarization [1]. Our earlier investigation on the structural and magnetic
properties of Mn2V1-xCoxZ (Z=Ga, Al; x=0, 0.25, 0.5, 0.75, 1) alloys have shown
a high TC compensated ferrimagnetism for x=0.5. But the half-metallic
characteristic was not probed. Here we are presenting an indirect investigation of
the half-metallicity of Mn2V1-xCoxZ using magnetization and electrical resistivity
studies. The magnetic moment values are in close agreement with the values
predicted by S-P rule. variation of spontaneous magnetization showed a local
moment behavior at low temperatures and an itinerant behavior at higher
temperatures for all the samples except x=0.5. The major contribution to the
resistivity at low temperatures arises from two-magnon scattering and the one-
magnon spin-flip scattering was less in magnitude. Indirect evidence for half-
metallicity can be observed except for the x=0.5 sample.](https://image.slidesharecdn.com/abstractsofinternationalconferenceonrecenttrendsinadvancedmaterials-240625040541-58b480ca/85/The-Science-of-Renewable-Energy-Classroom-Projects-217-320.jpg)
The Science of Renewable Energy: Classroom Projects
- 1. See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/374848648 Abstract Book of ONE DAY ONLINE INTERNATIONAL CONFERENCE ON RECENT TRENDS IN ADVANCED MATERIALS, organized by School of Physical Sciences K.L.E Society’s, P.C. J.... Conference Paper · September 2023 CITATIONS 0 READS 148 5 authors, including: Jagadeesha Angadi V K.L.E Society's P.C Jabin Science college 154 PUBLICATIONS 2,125 CITATIONS SEE PROFILE Kamaludin Abdulvakhidov Southern Federal University 89 PUBLICATIONS 331 CITATIONS SEE PROFILE Zhengyou Li Southern Federal University 19 PUBLICATIONS 41 CITATIONS SEE PROFILE All content following this page was uploaded by Kamaludin Abdulvakhidov on 20 October 2023. The user has requested enhancement of the downloaded file.
- 2. K. L. E. Society’s P. C. JABIN SCIENCE COLLEGE AUTONOMOUS Accredited at ‘A++’ Grade with 3.54 CGPA by NAAC IQAC INITIATIVE SCHOOL OF PHYSICAL SCIENCES ORGANISES ONE DAY ONLINE INTERNATIONAL CONFERENCE ON RECENT TRENDS IN ADVANCED MATERIALS 2nd September 2023 KLE Society’s P. C. Jabin Science College Vidyanagar, Hubballi -580031 Karnataka, INDIA Website:www.jabincollege.com E-mail:jabincollege.com SOUVENIR
- 3. PREFACE One day online International Conference on Recent Trends in Advanced Materials, organized by School of Physical Sciences K.L.E Society’s, P.C. Jabin Science College, Hubballi, Karnataka India, on 2nd Sep 2023. This conference is a wonderful opportunityfor all scientists, Scholars, Students, Industrialists and others involved in the field of Physics, Electronics & Material Science. The wide applicability of material physics is the moto behind the selection of the topic. Altogether, 3 planetary sessions, around 40 oral presentations and more than papers have been contributed to this conference from the Worldwide in the following categories. Nano Materials Magnetism and Spintronics Soft Matter Multiferroic Ceramics and Glass Novel Materials Polymers Radiation Effect on materials Thin films Electronic materials RF communication We are very grateful to all the participants, who have contributed to this event. This conference was be an event to provide a forum to exchange ideas, co-operation and future orientations by means of Invited talk, Paper presentation and conversation with other researchers from various institutes.We are also thankful to our Reviewers, Advisory Committee, organizing committee, and all others who have helped for the success of this event.
- 4. Principal Message The K.L.E. Society is one of the largest Educational Organizations in South Asia, which was established in 1916. It has been transformed into a veritable movement in providing quality education over the past 107 years. The Society being led by our Honorable Chairman Dr. Prabhakar B Kore ji. The K.L.E. family now encompasses over 18,000 staff serving in 300+ Institutions catering to the needs of more than 1.38 lakh students. The Society has one of the rarest distinctions of being conferred with two Deemed Universities, one in Medical Education and another in Technical Education. In 2016, the Society celebrated its Centenary; our Honourable Prime Minister Shri Narendra Modi ji graced the occasion. Further, The K.L.E. Society’s P. C. Jabin Science College was established in the year 1957, for imparting basic science education and nurturing the wonders of science. The college has been accredited for 5th cycle and awarded 'A++' grade, with CGPA of 3.54 by NAAC. Recognizing the quality science education rendered by college, the UGC has awarded 'Autonomous' status to our college since 2007. Regarding today’s conference, Material Science is an interdisciplinary field of research that involves the Physics, Electronics and chemistry of materials including theoretical and computational study. Chemist and Physicist play an important role in discovering new materials based on simple intuition arising from the knowledge of the structure and bonding, by adopting ingenious systematic strategies and Electronics gives the safe to the technology. We assure that, this conference will provide a platform to academicians, teachers and young researchers to interact with distinguished scientists in the field and to know the latest advancements in the field of Materials Science through online platform. It also aims at kindling interest in the minds of young students to pursue research as higher career. It is anticipated to widen the scope of interdisciplinary research among teachers and research scholars. Hope you all make a proper use of this conference Dr. L. D. Horakeri Principal
- 5. Convener Message One day online International Conference on Recent Trends in Advanced Materials was organized by School of Physical Sciences K.L.E Society’s, P.C. Jabin Science College, Hubballi, Karnataka India, on 2nd Sep 2023.Online platform that intends to bring together the eminent scientists, professors, research scholars working in the forefront of advanced materials in the different parts of the globe. Material Science is an interdisciplinary field of research that involves Physics, Electronics and chemistry of solid materials including theoretical and computational study.Chemist and Physicist plays an important role in discovering new materials basedon simple intuition arising from the knowledge of the structure and bonding, byadopting ingenious systematic strategies. Measurement of various physical andchemical properties and their understanding will lead to an exciting development inthe field of nanomaterials, magnetic materials, piezoelectric materials, ceramics,glasses, polymers, thin films, biomaterials and semiconductor materials. Recentlythe availability of excellent structural characterization facilities has advanced ourunderstanding of structure-property relationship and thus enabled us to design thematerials of interest. We assure that, this conference will provide a platform toacademicians, teachers and young researchers to interact with distinguishedscientists in the field and to know the latest advancements in the field of MaterialsScience through online platform. It also aims at kindling interest in the minds ofyoung students to pursue research as higher career. It is anticipated to widen thescope of interdisciplinary research among teachers and research scholars. The abstract book of the conference willconstitute abstracts from the Invited speakers and participants of original researchwork. Organizing committee has put its best efforts to ensure your participation and alsoin making the conferencea memorable event. We express our sincere thanks to Honorable chairman Dr. Prabhakar B Kore for unceased support in organizing this conference. We are also thankful to the Board of Directors, Board of management, Life members of the KLE Society and Principal of our College for theirsustained support and guidance.I thank all the invited speakers, participants, national and International advisory committee and organizingcommittee for their cooperation, help andsupport Dr. Jagadeesha Angadi V Convener
- 6. INDEX ABSTRACTS OF RESOURCE PERSONS Sl.No Title of the Paper Page No 1. Spinel aluminates: Photoluminescence, photocatalysis, and performance prediction -Shifa Wang a) School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, Wanzhou, 404000, China. 1 2 Encoded Surfaces by Stochastic Processing of Nanoscale Materials -Prof. M. Serdar ONSES Department of Materials Science and Engineering ERNAM – Nanotechnology Research and Application Center Erciyes University 2 3 Porous Nano Carbons from Biowastes: Development Criteria -Prof. Dr. GurumurthyHegde Director, Centre for Advanced Research and Development (CARD) CHRIST University, Bengaluru 560029 3
- 7. INDEX Sl.No Title of the Paper Authors Page No 1. Synthesis, Characterization And Antimicrobial Activities of Transition Metal Complexes Derived From 1-(((4,6- dimethylpyrimidin-2- yl)imino)methyl)naphthalen-2-olS chiff Bases D.T. Sakhare 4 2. Crystal structure determination, molecular docking and dynamics of arylidenecyano acetates as potential JNK-3 inhibitors for Ischemia Reperfusion Injury Chandan R1 ,K.S.Kiran1* , Chaithanya M.S2 , Aditya M3 5 3. Magic of Red Mega 480 with Silver Nanoparticles Dr Vadiraj B Tangod 6 4. Investigation of Cations with Zirconium substituted in Calcium hexa ferrites J. N. Christy 7 5. Effects of Ce4+ doping on the electrical properties of (Bi0.5Na0.5)0.94Ba0.06TiO3 ceramic Amrita Singha 8 6. Reutilization of carbon from exhausted water filter cartridges(EWFC) for decontamination of water: An innovative waste management Approach Prachi P. Bote a , Samadhan P. Pawar a , Govind B. Kolekar b , Anil H. Gore a,c,* 9 7. Enhanced Near- Infrared Photoluminescence Nd3+ Ions Doped in Borate Glasses Containing Silver Nanoparticles N. Chowdareddy, G. Ravitheja, Ashok R Lamani 10 8. Graphene-based TiO2 nano-composite for the removal of antibiotic from aqueous media V. Padmaja , P. Sri Chandana 11 9. Analysis of Microstructure ofNanomaterial Incorporated Ordinary Portland and Portland Pozzolana Cement Mortars N.Avinash Reddy,Dr.P.Sri Chandana 12 10. Characterization Studies on Adipic Acid Doped Ninhydrin Crystal Grown by Solvent Evaporation Method at Room Temperature. N. Y. Sugirthasuni 13 11. Gas Sensing Application of Nanocrystalline Ferrites Synthesized by Citrate-gel Auto- combustion Method Laxmi J. Hathiya, Deepshikha Rathore And Hiren. H. Joshi 14 12. Dielectric and Mössbauer study of PbSnO3 S.P. Kubrin, I.P. Raevskii, D.A. Sarychev, N. M. Olekhnovich, A. V. Pushkarev, Yu. V. Radyush 15 13. Structural, Microstructural and Humidity sensing Studies of ZnFe2O4/Bi2O3 composite Veena V.S, Amith Yadav H.J, Jagadeesha Angadi V 16
- 8. 14. Polyaniline Nanocomposites Thin Films For Sensor Application Jakeer Husain, Jaisheel Sagar 17 15. Synthesis of TiO2/Fe2O3/PVA Nanocomposite for the aqueous dye degradation Mahesh Bhat, Abhilash MR And Mamatha SV 18 16. Mechanical Properties in Spinel (MgCr2O4) Phase Containing Alumino-Silicate Glass- Ceramic Mrinmoy Garai, Arianit A. Reka 19 17. Study of Red/Blue Upconversion Emission in rare earth ion doped glasses Bijay Gupta, Ghizal F. Ansari 20 18. Formulation and Evaluation of Mucoadhesive Buccal Films of Propafenone HCl P. Madhuri1, Gadela Venkata Radha 21-22 19. Sulfurization time effect on Cu2SnS3 films under N2S vapor pressure G. Phaneendra Reddy, C. Sumalatha, T. Sreenivasulu Reddy, Tivanov M.S., Gremenok V.F., K.T. Ramakrishna Reddy 23 20. A Structural Report on Pb(Fe0.5Nb0.5)O3 – Pb(Co0.33Nb0.67)O3 Solid Solutions Nagaraja T, Vasant Sathe2 , Basavaraj Angadi 24 21. Magnetic Response of Nd+2 doped Cobalt Chromite Nanoceramics V.H.Choudapur, V. Jagadeesha Angadi 25 22. Environmental Pollution: A Serious Threat to Global Ecosystems Preethi Bevinathalapura Shivaswamy Lingrajuhonnuru Gurusiddappa; Charan Kumar Kachintaya And Shankrammakalikeri 26 23. Enhanced Nonlinear Optical and Optical Liming Properties of Holmium Containing Borate Glasses Embedded with Silver Nanoparticles G. Jagannath 27 24. Recent developments of advanced luminescent glasses for reddish orange emitting device applications R. Rajaramakrishna 28 25. Lead-free ceramics based on NaNbO3 and BiFeO3 Kh.A. Sadykov, K.P. Andryushin, S.I. Dudkina, L.A. Reznichenko 29 26. Regularities of the formation of correlation relationships composition - thermodynamic prehistory - macro-responses in systems based on (Ba,Sr)TiO3 and BiFeO3 S.V. Khasbulatov K.P. Andryushin, S.I. Dudkina, L.A. Reznichenko 31-32 27. Macroproperties of the quasi-binary system (1-x)((Na0.5, K0.5)NbO3- Pb(Zr0.5, Ti0.5)O3)- x/2CdNb2O6 Andryushin K.P., Glazunova E.V., Shilkina L.A., Pavlenko A.V., Nagaenko A.V., Dudkina S.I., Andryushina I.N. , Kubrin S.P., Khasbulatov S.V., Maslyaev A.S, Reznichenko L.A. 33 28. Improved resonant nonlinear optical characteristics and optical limiting K. Keshavamurthy, B. N. 34
- 9. functionality of gold nanoparticles incorporating borate glasses in the nanosecond pulse regime Swetha 29. Sm 3+ doped Ag NPs nucleated alkali borate glasses with enhanced photoluminescence and spectroscopic attributes B.N. Swetha Andm. K. Kokila 35 30. Recent developments of advanced luminescent glasses for reddish orangeemitting device applications R. Rajaramakrishna 36 31. Study of Structural, Microstructural, Vibrational and Low Temperature Magnetic Properties of NiFe 2 O 4 -CoCr 2 O 4 Nanocomposites K. Manjunatha, Jagadeeshaangadi V,Hsin- Hao Chiu,Ming-Kang Ho,Tsu-En Hsu,And Sheng Yun Wu 37 32. Influence of lithium potassium zirconate nanoparticle on polyvinyl alcohol thin films Dr. Chethana M 38 33. Synthesis and characterisation of polyaniline (pani) - [Cu 2 Cl 4 L 3 ].2H 2 O nanocomposites by inverted emulsion polymerization Ramanath Prabhu And T. Jeevananda 39 34. Highly conductive organic thin films of PEDOT–PSS: silver nanocomposite treated with PEG as a promising thermo-electric material Apsar Pasha, Jagadeesha Angadi V 40 35. Electrochemical Sensor for Antioxidants in Portulaca oleracea Medicinal Plant, Aishwarya M Mishrikoti ,Faizun Khalil Naikwadi, Nilesh Chougala, Raghu S, VidyaKamble, Shidaling Matteppanavar 41 36. Electrochemical Sensor for Obesity Reducing Acalypha indica Medicinal Plant Akshata Vasawade, Rakesh Jambagi, Chetan Hosatti, Aditya J Lengade, Sunil Patil, Shidaling Matteppanavar 42 37. Optical and thermal Properties of copper oxide nanoparticles embedded polyaniline nanocomposites Niranjana M, Ganesh D B, Ganesh N Yallappa, Manjunath R S, Nataraja G, Moulya S 43 38. Synthesis and characterization of Ni 1-x Gd x O thin films by spin coating technique Srinivasa N V, Mahesh H M’ Basavaraj Angadi 44 39. Spinel CoFe 2 O 4 -Activated carbon nanocomposites: Photocatalytic dye degradation and biomedical applications Manikandan Ayyar And B. Catherin Meena 45 40. Effect of Al/Ga and Si on the magnetic properties of Nd 2 Fe 17 B 0.05 Srilatha.Y,Vagdevi. K, Revathi. N, Asharani. B. M 46 41. Structural comparison of bulk Cobalt and Carbon Encapsulated Cobalt Nanopowder Manjunatha M 47
- 10. using 59Co NMR 42. Synthesis and study structural and magnetic properties of Ho 0.2 Y 0.8 FeO 3 and HoFeO 3 K.S.Kantharaj,G.V. Jagadeesha Gowda,N. Ramprasad,Arjuna Gowda, Jagadeeshaangadi V 48 43. Structural and Raman Studies on combustion synthesized La Doped Ni 0.4 Zn 0.6 Fe 2 O 4 Ferrites Anupama M K 49 44. Role of Aluminum doping on properties of Zinc-Cadmium nanoferrites Shivkumar, Medha Deshapande, L.R.Naik And R.B.Pujar 50 45. Synthesis, structural and luminescence studies of Graphene Oxide. Vijay Kumar R, H. J. Amith Yadav , Sushma Katti , V.S. Veena, Pooja Raj B N And Chethan K S 51 46. Co-doped Graphene Quantum dots for sensitive detection of dopamine through the mechanism of Photo electron transfer Prathul Nath , Manisha Chatterjee, Sachin Kadian, Anshu Kumar, Vishal Kumar, Partha Roy, Gaurav Manik & Soumitra Satapathi 52 47. Application of Cadmium Doped Cobalt Chromates for Enriched Sensing properties and Recovery Time in Humidity Sensors Swathi k. M , Chethan B, Shainaz Nadaf, Sofia Sultana Laxmeshwar, Soumya S. Kulkarni, Hemantkumar M. Savanur, Jagadeesha Angadi V 53 48. Lutetium Doped Zinc Ferrites for humidity Sensor Application Sofia Sultana Laxmeshwar,Soumya S. Kulkarni, Shainaz Nadaf, Swathi K. M, Hemantkumar M. Savanur , Jagadeesha Angadi V 54 49. The use of SEM and X-ray diffraction peak profile analysis to determine thestructural and microstructure parameters of Lu3+ doped Zinc ferrite nanoparticles using Debye Scherrer, Williamson-Hall method Shainaz nadaf, Sofia Sultana Laxmeshwar, Soumya S. Kulkarni, Swathi K. M, Hemantkumar M. Savanur Jagadeesha Angadi V 55 50. Exploring Multi-Functionality: Polymer- Coated Rare Earth Oxides in Optoelectronics, Latent Fingerprinting, and Anti- Counterfeiting applications Kartik, Sunitha D V 56 51. Z-Scan Measurements of TMDs/Polymer Nanocomposites Krishmaanand, S.K. Tripathi 57 52. Foam Concrete: State-of-the-Art-Review Dr. Kiran. B, 58
- 11. 53. The study of optical properties and conjugation of quercetin on ternary nanoparticles Swati Sharma1 , Shikshita Jain, S.K. Tripathi1 59 54. "Unveiling Contemporary Advances: Exploring Trends in Advanced Materials within Animation" Vidisha 60 55. Electric and Thermal Properties of ZnO based Resistive Random Access Memory Device Nasreen Ansari, Archana Jain, And Vivek Kumar Jai 61 56. Li doped MgFe 2 O 4 for Humidity Sensor Applications Jagadeesha Angadi V, Chathan Kumar B, Sammedshantinath Hardi 62 57. Confirmation of Superparamagnetic behaviour in Co 0.5 Ni 0.5-x Sr x Fe 2 O 4 nanoparticles by Mössbauer spectroscopy study V. Jagadeesha Angadi, K.M. Srinivasamurthy, Muhammad Imran,S.P. Kubrin, Mohd Ubaidullah, Shoyebmohamad Hua , Huajing Gao F. Shaikh, Yang, Vinayak K Pattar, S.O. Chander Prakash , Manjunatha 64 - 63 58. Synthesis and studies on the effect of gamma irradiation on dielectric properties of Samarium doped Mn-Zn nano ferrites Jagadeesha Angadi V 65 59. Facile Synthesis of Yttrium doped ZnO Nanoparticles and Its Optical Properties Priyanka. M , T Ranjethkumar Reddy , G.Srinivas Reddy 66 60. Green synthesis of CuFe 2 O 4 nanoparticles by honey mediated sol-gel auto-combustion method Prabhakar Ningayya Patil, Sarvesh Kumar, V. M. Jali, B. Sahoo 67 61. Synthesis and Structural, Microstructural Electric and Humidity Sensing properties Gd 3+ doped Co 2+ Cr 2 3+ O 4 N. Ramprasad, G.V. Jagadeesha Gowda, K.V. Arjuna Gowda, K.S.Kantharaj, Jagadeesha Angadi V 68 62. Iron-Infused Chitosan: A Promising Material for Effective Copper (II) Ion Removal and Environmental Restoration V.N. Meena Devi And M. Murugan2 69 63. Effect of Concentration of Fullerene Doping on Light Switching Property of P3HT Thin Films P. Aruna , C. M. Joseph, S. M. Naveen, K. Keshavamurthy 70 64. Enhancing Optoelectronic Performance of Mg-Doped ZnO Thin Films. K. Mohammed Salman* ,Mohamed Zikriya, C.G. Renuka 71
- 12. 65. Synthesis, characterization, dielectric and ac conductivity behavior of Cu-Sr nanoferrites B. Shruthi, B. J. Madhu, H. Bhagyalakshmi 72 66. Atomically Dispersed Dual-atomic Co-Fe- N-C Electrocatalyst as Bifunctional Oxygen Electrocatalysis Mohd Ubaidullah, Dr.Anuj Kumar Bidhan Pandit 73 67. "Enhancing Educational Content: Exploring the Impact of Visual Effects (VFX) and Computer Animation Technology on Learning Vinod Raturi, 74 68. Comparative Study of the Electrochemical Behavior of Electrodeposited Synthesis of Al and Cu-Doped MgO Flexible Electrodes for Supercapacitors M.T Mhetre, B.J. Lokhande 75 69. Effect of C and T slots on Compact Rectangular Monopole Antennas for Wireless Applications Naveena S M, Aruna P, Joseph C M, 76 70. An investigation of the magnetic properties of REMnO 3 manganites at low temperatures Nagaraja B S 77 71. Structural, Morphological, and Electrochemical Study of the Electrodeposited Cadmium Oxide Thin Films for Supercapacitor Application Prathamesh Dahivade, Balkrishna Lokhande 78 72. Characterization Studies on Adipic Acid Doped Ninhydrin Crystal Grown by Solvent Evaporation Method at Room Temperature. N. Y. Sugirtha Suni 79 73. Structural, Vibrational, Thermophysical, and electronic properties of full Heusler compound (L1 0 FeNi 2 Ge). B. P. Thacker*, Mitesh B Solanki, R.N. Kharatmol, Yogesh D Kale And Trilok Akhani 80 74. An experimental analysis of Mn, Cr doped CdTe by using elemental specific method for spintronics application. Pujarani Parida 1,# , Jayashree Patra 1 , V.R. Singh 2 , V.K. Verma 81 75. Study of multiferroic properties of Barium titanate/ Nickel ferrite based composites Jayashree Patra , Pujarani Parida , V.R. Singh , V.K. Verma 82 76. Green synthesis of Gold Nanoparticles using aqueous extract of Tabernaemontana heyneana leaves. Dr.Gururaja K 1 Dr. M David 83 77. Oxalate Precursor synthesis of La 1-x Gd x FeO 3 nanoperovskites: effect of Gd 3+ dopant on structural and magnetic properties Jojan R. R. ,Godase S. B. , Jadhav C.N Lohar K.S. 84
- 13. 78. An Overview of Thin Film Deposition Techniques Udachan 1* , S.B. Kolvekar 1** , N. H. Ayachit 1 , L.A. Udachan 2 , S. Siddanna 2 , S. S. Kolkundi 85 79. Thermo dynamical parameters of some Ferroelectric liquid crystals – Dilatometric study K.Nagi Reddy 1 Syed Habeebulla Hassain 2 , Manu 3 , K Fakruddin 86 80. Structural, Vibrational, Electronic, and Thermophysical properties of Al-Mg alloy Pradhyumansinh Raj, Vaishali Nathwani, Bhavik Thacker 87 81. Iron-Infused Chitosan: A Promising Material for Effective Copper (II) Ion Removal and Environmental Restoration V.N. Meena Devi 1 And M. Murugan 88 82. Dielectric Properties of Nanostructured YbFeO3, Yb3Fe5O12and YbMn1-xFexO3 Zhengyou Li, Kamaludin Abdulvakhidov, Abeer Alshoekh,Bashir Abdulvakhidov, Marina Sirota, Ivan Dmitrenko 89 83. Biogenesis One-pot Synthesis of ZnO nano tie-bows and its Antibacterial Activity. Manju Manuel 90 84. Physical and UpconversionProperties of Ho3+ Doped Tungsten Tellurite Glass Samples Anil Ashutosha* ,Ghizal F. Ansaria 91 85. Bio-waste as an Electrode Material for Energy Storage Devices: A Sustainable Approach to Green Energy Yamini Guptaa , Poonam Siwatchb , Kriti Sharmaa∗, S.K. Tripathic 92 86. Recent developments of advanced luminescent glasses for reddish orange emitting device applications R. Rajaramakrishna 1, * 93 87. Structural and Magnetic Properties of Fe2- xCoxVAl Heusler Alloys Ashok Yadav, Vivek Kumar Jain 94 88. Structural, Vibrational, Electronic, and Thermophysical properties of Al-Ni alloy Vaishali Nathwani, Bhavik Thacker 95 89. Novel material :Graphite Carbon Nitride Prathibha Hampapura Doddananjaiah1a ; Sushmashree Krishnappa1b ; Shankramma Kalikeri*1 ; Charan Kumar Kachintaya2 ; And Lingaraju HG3 96-97
- 14. 90. Li doped MgFe2O4 for Humidity Sensor Applications Sammed Shantinath Hardi1 , Jagadeesha Angadi V1 , Chathan Kumar B2 98 91. Bio-waste as an Electrode Material for Energy Storage Devices: A Sustainable Approach to Green Energy Yamini Guptaa , Poonam Siwatchb , Kriti Sharmaa∗, S.K. Tripathic 99 92. Synthesis and Studies on the Optical limiting behavior of Polyindole-ZnONano Composites S. Pramodini, K. K. Nagaraja2 , And P. Poornesh2 100 93. Crystal structure and magnetic properties of (1-x)LiZn2.5Ti2.5O8 – xLiFe5O8 spinel- structured solid solution ceramics Anton A. Zabolotnyi, Stanislav P. Kubrin, Nikita V. Ter-Oganessian 101 94. Fabrication of W doped VO2/PVB thin film for smart window applications Nazia shaikha , Sunitha D Va * 102 95. Structural Properties of Magnetic Spinel Cobalt Ferrite Synthesized by Oxalate Precursor Method S. B. Godase1 , R. R. Jojan1 , S. B. Rathod2 , B. L. Shinde2 and K. S. Lohar1* 103 96. Cd2+ Chromates using X ray diffraction technique and ultraviolet spectral studies Soumya S. Kulkarni1 ,Shainaz Nadaf1 ,Sofia Sultana Laxmeshwar1 ,Chethan B,2 Swathi K. M1 ,Hemantkumar M. Savanur1* , Jagadeesha Angadi V2 104 97. Optimistic Influences of Nanotechnology on Food Improvement and Food Security Sushma Shree Krishnappa Prathibha Hampapura Doddananjaiah ,Preethi Bevinathalapura Shivaswamy Shankramma Kalikeri, Charan Kumar Kachintaya. 105 98. Investigating the Proficiency of Tungsten Oxide Sensor for Outstanding Nitrogen Dioxide Detection Gajanan M. Hingangavkara,B , Sushilkumar S. Bandgara , Ramesh N. Mulika And Vikas B. Patilb 106 99. ZnONanorods on GCN/PPD/TCFP with Ternary Synergy for Promoting Furfuryl Alcohol Oxidation Roopa Margaret Rodrigues, Anitha Varghese 107 100. Electrochemical synthesis of MOF-PTA composite as novel electrode material for the simultaneous determination of Catechol and Resorcinol Sandra Josea , Anitha Varghesea* 108 101. Development of Electrically conductive flexible nanocomposite electrode materials for supercapacitor applications by incorporating o-anisidine into crosslinked poly (vinyl alcohol). Mohemmed umar S. Mulla1, A , Mahadevappa Y. Kariduraganavar1 109
- 15. 102. Synthesis, Crystal Structure and Computational Analysis of 4H-Chromene Analogues T.C. Raveesha1 , K. Mantelingu2 , T. Demappa1* , Chandra3 , B.M. Rajesh4 110 103. Modification of Polystyrene Sulfonic Acid - co- Maleic AcidCrosslinked Chitosan Membrane by Incorporating Diethyl Phthalate and Its Application to the Pervaporation Separation of Water/Tert- butanol Mixtures. Suhasini V. Kotura , M. Y. Kariduraganavara 111 104. Optical Band- Gap Analysis of Green Synthesized Zinc Oxide Nanoparticles Preeti soni, Kanchanranva And Shweta Vyas 112 105. Multiband Flag Shaped Slotted Printed Antenna for Wireless Communication Dr. Mamatha A G 113 106. Extracted Pectin graft Polyacrylamide Silver Nanocomposite Hydrogel Beads : Preparation and its Characterization Purushothama I. And Gangadhar Babaladimath 114 107. Impact of Distributed Generation on Present Power System Operation and Control Practices Chandrashekar P 115 108. Photoluminescence studies of copper doped zirconium titanate nanoparticles S.Akshaya.B , Y S Vidyac , H C Manjunathad 116 109. Study on the current gain of radiation- induced transistor BC-107 K. Shalini, K. V. Shravani And L. F. M. Anand 117 110. Crystal structure and magnetic properties of (1-x)LiZn2.5Ti2.5O8 – xLiFe5O8 spinel- structured solid solution ceramics Anton A. Zabolotnyi, Stanislav P. Kubrin, Nikita V. Ter-Oganessian 118 111. Role of Dy 3+ in Mg-Rb ferrites for humidity sensor applications G.H Malimath 1 , Veeresh G Hiremath 1,2 , Jagadeesha Angadi V 2 119 112. Barrier height inhomogeneitiesof Current- Voltage Schottky Contacts to n-InP Nagaraj M K 120 113. Temperature effect on the spectral characters of coumarin-6 laser dye in n- Heptane solvent Anil Kumar A , C.G. Renuka 121 114. Highly Sensitive and Selective Electrochemical Sensing of Hg(Ⅱ) at the nanoscale using novel nanosized Cobalt Phthalocyanine Mohammed Yaseena , Mahadevappa Y. Kariduraganavar 122 115. “Influence of Al doping on the physical properties of Zn-CO Nano ferrites” 1. Sunitha,Shivakumar Bagal ,S V Angadi, L D Horkeri,R B Pujar,2.C S Hiremath 123 116. Photonic Crystal Assisted Surface Enhanced Raman Scattering for the Trace Detectionof Dye molecule Bhavya M. B., And B. V .R Tata 124
- 16. 117. Palladium and Cobalt complexation via curcumin as a ligand: A novel material for NLO Shakeel Nawaz S. And Dileep Ramakrishna 125 118. HEA/BaMoO4 composite phosphors: Synthesis, performance prediction and fingerprint recognition Yuanyuan Zhanga) *, Shifa Wanga 126-127 119. FeNi-layered double hydroxide derived bimetallic FeNi-MOFs integrated membrane for the removal of organic dyes K. Gayathri, M. Sakar, * R. Geetha Balakrishna 128 120. Spinel nickel aluminate (NiAl2O4): Regulates synthesis, photocatalysis, and degradation pathways Xinmao Yua) *, Shifa Wanga 129 121. Recent Synthetic Routes for the Synthesis of Biologically Active Quinoxalin Derivatives: A Systematic Review Rameshwar R.Magar 130 122. Fluorescence Quenching Studies of Nitroaromatics, employing sulphoic acid Doped Polyaniline Dr. Parvathi Patila 131 123. Orthogonally polarizeddiversified UWBMIMO antenna with on-demand 5G- n77/n78 band rejection characteristics Premavani1 , B. Satyanarayana2 And S. N. Mulgi3 132 124. Structural, optical and electrical properties of TiO2 thin films prepared by thermal oxidation of Ti films deposited using E- beam evaporation Nisha Mahepal1 , Ridhi Mahepal1 , Trilok Kumar Akhani1 , Mahendra Singh Rathore1 133 125. A Review on antimicrobial activity of doped zinc oxide nanoparticles. Preeti M1. Sheela Gandhad2 134 126. A theoretical DFT/HSE06 investigation of metallic doping Nb, Fe and Ni doping in MgB2 material and effect on crystalline and electronic structure Guilherme Bonifácio Rosa1 , Sérgio Ricardo De Lázaro1 , Luis Henrique Da Silveira Lacerda2 135 127. DFT quantum simulation on the magnetic states in the SrFeO3 material Guilherme Bonifácio Rosa1 , Sérgio Ricardo De Lázaro1 , Luis Henrique Da Silveira Lacerda2 136 128. A Review On Synthesis Of Borophene: A Nanoparticle With Endless Possibilities Suvodip Mukherjee1* , Harikrishna 137 129. Antioxidant Activity of Diaryl Sulfides and Sulfoxides Efficient Synthesis, Characterization, Antimicrobial and Antioxidant Activityof Stable Diaryl Sulfides and Sulfoxides Devappa S. Lamani 138
- 17. 130. Synthesis of ultralong Cr doped Ge Nanowires for room temperature ferromagnetic properties Amar S. Katkar 139 131. Syntheses of MnO2 thin film by Electrodeposition method Arpana Ekanath Kore*1 , Ekanath Khandu Kore1 And RameshNamdev Mulik1 140 132. Chemistry and Pharmacological Applications of Benzimidazole and its Derivatives Sandeep Sontakke 141 133. A Comprehensive Review on Biological Significance of Fused-Benzimidazoles Sandeep Sontakke 142 134. Optimization of friction stir welding parameters for the maximum electrical conductivity of Al-Cu butt joints using Taguchi approach Pratap Kumar J, Anil Raj2 143 135. Synthesis and characterization of thermally stable second-order nonlinear optical side- chain polyimides containing Y shape push– pull chromophores. Ranjith Gowda P. B.A and M.Y. Kariduraganavar 144 136. Synthesis, structural and luminescence studies of Graphene Oxide. Vijay Kumar R1 , H. J. Amith Yadav1, A) , Sushma Katti1 , V.S. Veena1,2 , Pooja Raj B N1 And Chethan K S 145 137. Click approach for synthesis of 1-(4-(2,3- dichlorophenyl)piperazin-1-yl)-2-(4- (phenoxymethyl)-1H-1,2,3-triazol-1- yl)ethenone derivatives as potent antimicrobial and antioxidant agents Chudamani R Savajjera Dr.L.A.Shastri 146 138. WLED’spreparation of iron doped cadmium silicate nanophosphor Dr. Manohara. B. M 147 139. Crystal structure and luminescence investigations on Tamarindusindica-assisted green synthesis of CeO2 nanoparticles. B.S.Rohini1 ,Nandan K R1 , Maruthi N1 , Midhunlal P V2 148 140. Synthesis and investigation of Polyaniline- fly ash nano-composites via chemical oxidative polymerization technique Ramya Ra,B* , Jahnavi Va , Pushpa Nc andmahendra 149 141. Comparative Analysis of the Impact of the Powder Metallurgy and Compo-casting Processing Routes for Fabricating Aluminium Alloy Reinforced with Nanoparticles Shijo Thomasa , Rameshaka , Darshan S Ma 150 142. Precipitation kinetics acceleration in Spark plasma sintered MWCNT reinforced AA2219 alloy Shijo Thomasa , Anil Raja 151 143. High-performance Mg hybrid composites using upgraded Squeeze Casting, and study the significance of Al2O3 and carbon fiber in Mg matrix. Shijo Thomasa , Francis Xavier La 152
- 18. 144. Thermal control of the characteristics of Ho- modified BiFeO3in the microwave range Astafievp.A.1 , Andryushin K.P.1,2 ,Pavelkoa.A., Reznichenkol.A 153 145. Dielctric Propertis Of Pani/Fe2O3/Zno And Its Polymer Nano Composites Eknath Nivrtirao, Veeresh Rampure And Basavaraja Sannakki 154 146. In vitro antibacterial activity of green synthesized Ag nanoparticles using Vinca rosea leaf extract Dayanand lalasangia,B , S. M. Hanagodimathb , Mangesh S. Jadhavc , Vadirajb.Tangodd , Gulamnabivantie 155 147. Impedance, magnetodielectric and magnetoresistive properties of YbMn1- xFexO3 Zhengyou Li*1 , Kamaludin Abdulvakhidov1 ,V. Jagadeesha Angadi2 , Abeer Alshoekh1 , Bashir Abdulvakhidov3 , Marina Sirota1 , Ivan Dmitrenko1 156 148. Dielectric Properties of Nanostructured YbFeO3, Yb3Fe5O12 and YbMn1- xFexO3 Zhengyou Li*1, Kamaludin Abdulvakhidov1, Abeer Alshoekh1, Bashir Abdulvakhidov2, Marina Sirota1, Ivan Dmitrenko1 157 149. Synthesis and characterization of Ni1- xGdxO thin films by spin coating technique Srinivasa N Va , Manjunatha Tb ,Mahesh H Mc , Basavaraj Angadia 158 150. Effect of Copper Substitution on Physical Properties of Ni0.6 Co0.4 Fe2 O4Nanoferrites. Somshekhar S Hiremath1 And L R Naik1 159 151. Exploration on Size Reduction In Square Ring Microstrip Antenna Using Golden Ratio. Rudrayya.Mudenurmath . Prof Vani R.M2 160 152. Synthesis and Characterization of doped α −Naphthol Luminophors V. B. Shabade, A. R. Mainak And S. R. Pujari* 161 153. Synthesis and Photoluminescence Studies of Manganese Oxide (Mnx-1Ox, x=3,4) Nanoparticles N.C.Horti1 And M.D.Kamatagi1 162 154. Lattice thermal conductivity of ZrSe2 monolayers R.F.Chinnappagoudra, B.H.Yakannanavar, S.B.Patil1 , M.G.Bhyahatti, K.K.Gangai1 and M.D.Kamatagi 163 155. Laser welding of AISI309 steel toAISI446 steel joints:Processing optimization, metallurgical and mechanical properties Krishnanunni M, , Dr. Shijo Thomas 164 156. PL studies of Gd2O3 and rare earth ion doped nanophosphors T P Jyothia.B , D.V Sunitha 165
- 19. 157. Investigating the Physical Characteristics of Cs2LiGaBr6 Lead- Free Halide DoublePerovskite for Thermoelectric Applications *Mudasir Younis Sofi, 1 m. Ajmal Khan 166 158. Breastmilk Monitoring Of Neonatal Using RFID Technology MS.GA.Nivedha Mirdula Sree K N ,Madhumitha T , Zainab Nisha M 167 159. Synthesis of Novel Terpolymer from Natural Oil and Evaluation as Viscosity Modifier for the Indian Waxy Crude oil Prabha Modia 168 160. Quantum efficiency of manganese doped zinc silicates and its applications D. Srinivasa Rao 1 , Kenji Murakami 2 V. Madhu Mohan3 , And K. V. R. Murthy 169 161. Study ofExchange Bias, Magnetic Memory and Magnetocaloric Effects in Mg-doped CoCr2O4 nanoparticles K. Manjunatha,A chia-Liang Cheng,A and Sheng Yun Wua 170 162. DFT study on the structural, electronic and thermophysical properties of GdTiO3 using LDA R. N. Kharatmol* , Bhavik Thacker* , Dhara Raval# , Adwait Mevada+ , N. Y. Pandya$, P. N. Gajjar 171 163. Low-temperature Magnetic, Magnetic Memory and Magnetocaloric Effects of Sn0.6Cr0.1Ge0.3Te Alloys Hsin-Hao Chiu,1 K. Manjunatha,1 Hao Zhang,1 Shih-Lung Yu,1 N.S. Maruthi,2 Chia-Liang Cheng,1 Shidaling Matteppanavar,3 And Sheng Yun Wu 172 164. Synthesised turnery composite to improve the humidity sensing performance Thalari Chandrasekhar1 , Y.T. Ravikiran2 , N. Sasidhar2a 173 165. Lithium Ion Transport Studies In PEO- PMMABased Blend Polymer Electrolyte Systems Revathyc1 , Sunitha VR2 * , Benson K Money2 And Radhakrishnan S3 174 166. Structural, Vibrational and Photoluminescence Properties of Cd1- xSnxWO4 (Where x= 0, 1, 3, and 5%) Nanorods Tsu-Enhsu,A k. Manjunatha,A Chia-Liang Cheng,A Ashish Chhaganlalgandhi,A And Sheng Yun Wu 175 167. Structural, Magnetic and Photoluminescence Properties of Cu Doped CdWO4 Nanorods Ming-Kang Ho,A Ashish Chhaganlal Gandhi,A,B K. Manjunatha,A Chia-Liang Cheng,A And Sheng Yun Wua,* 176 168. Thermal control of the characteristics of Ho- modified BiFeO3in the microwave range Astafevp.A.1 , Andryushin K.P.1,2 ,Pavelkoa.A.1 , Reznichenkol.A.1 177 169. Study of structural,vibrational and magnetic properties ofGe and Mn doped SnTe Alloys , Hao Zhang,1 K. Manjunatha,1 Hsin- Hao Chiu,1 Shih-Lung Yu,1 N.S. Maruthi,2 Chia-Liang Cheng,1 Shidaling Matteppanavar,3 And Sheng Yun Wu 178
- 20. 170. Study of electrical and magnetic properties of Bi doped CoCr2O4 nanoparticles Shih-Lung Yu,1 K. Manjunatha1 , Jagadeeshaangadi V,2 Sheng Yun Wu1 179 171. Synthesis and Optical Properties of Lead- Tungsten-Tellurite Glasses Rajiv Pandeya 180 172. (E)-(1-(5-chlorothiophen-2- yl)ethyl)diazenyl)(furan-2- yl)methanone:Synthesis, charecterization, crystal structure, Hirshfeld surface and DFT studies. B. Pramodha , Karthik Kumarab And N. K. Lokanathc 181 173. An efficient catalyst for the hydrolysis of NaBH4 -CoB-MOF Anitha Abraham, R. Fernandes 182 174. ZnO-Baed Sensor for the Detection of Cortisol level Divyamani M P, Naveen Kumar S K 183 175. On the precise lattice parameter determination Chandana S1 , Soundarya A R1 , Veerabhadrayya M1 184 176. Evaluation of theelectrochemicalattributes of dual-functional NiO and BiOCl hybrid sathigh operational potential Sevda Yetimana,F* , Fatma Kılıç Dokan B ,Mustafa Serdar Önsesa,C ,Erkan Yılmaza,D ertuğrul Şahmetlioğlua 185 177. An Experimental study of temperature distribution and mechanical characteristics of friction welded Al- Cu butt joints with circular OHNS steel tool. Pratap Kumar J1*, Anil Raj2 186 178. Molecular aggregation kinetics of Heteropolyene Sumit Kumar Panja A,* , Sumit Kumar B,* , Anas D. Fazal A , Sayantan Bera 187 179. Study on polyaniline dislocation density and strain in MgO nanocomposites. Ramabai Narasimhachar1 , Bharati Basavaraj2 And Basavaraja Sannakki1 188 180. Experimental investigation of hexagonal boron nitride reinforcement in Aluminium alloys through casting method Nice Menacherya,B , Shijo Thomasa 189 181. Structural, Morphological, and Electrochemical Study of the Electrodeposited Cadmium Oxide Thin Films for Supercapacitor Application Prathamesh Dahivade, Balkrishna Lokhande 190 182. Third order nonlinear optical response of TiO2 nano colloidal solutions under continuouswave laser Rachana1 , K. K. Nagaraja2 , P. Poornesh2 , S. Pramodini1 191 183. Study on the production of metal matrix composites AA7050 through stir casting Nagaraja T. K.1 And Sasidhar Jangam2 192
- 21. 184. Photocatalytic dye degradation of RHODAMINE B using ZINC oxide nanoparticles C. Shalini1 , K. K. Nagaraja2 , And S. Pramodini1 193 185. Current-Voltage characteristics of nanographene and titanium dioxide (TiO2) heterostructure Vindya Shetty1 , Abhishek Hiremath1 , Dr. P. Anjaneyulu1 194 186. Impedance, magnetodielectric and magnetoresistive properties of YbMn1- xFexO3 Zhengyou Li*1 , Kamaludin Abdulvakhidov1 ,V. Jagadeesha Angadi2 , Abeer Alshoekh1 , Bashir Abdulvakhidov3 , Marina Sirota1 , Ivan Dmitrenko1 195 187. Indirect experimental investigations on thehalf-metallicityofMn2V0.5Co0.5Z (Z=Ga,Al) compensated ferrimagnets P V Midhunlal1* , J Arout Chelvane 2 , P D Babu 3 , N Harish Kumar 4 196 188. Internet of Things for Healthcare Applications Dr. Anil Wamanrao1 , Dr. Mamatha A G2 And Dr. R L Raibagkar3 197 189. T-Slit and symmetrical arc loaded with defective ground plane monopole microstrip antenna for wireless communication applications. Srinivas Ramacharya1 , Syeda Rafath Ara2 , Vani R M3 198 190. Review on multiband microstrip patch antenna comprising 5G wireless communication Smt Revati.J.Poonja.Dr R.L.Raibagkar 199 191. Synthesis and characterization of Rubedium doped magnesium ferrite Veeresh G.H 200
- 22. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 1 Spinel aluminates: Photoluminescence, photocatalysis, and performance prediction Shifa Wang a) School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, Wanzhou, 404000, China. *e-mail:wangshifa2006@yeah.net (Shifa Wang) Spinel aluminates have a wide range of applications in lightweight helmets, space station lighting windows, humidity sensors, adsorbents, photocatalysts, luminescent substrate materials, microwave dielectric and ceramic capacitors and other fields due to their excellent thermal and chemical stability, high mechanical and corrosion resistance, light weight, transparency, high radiation resistance, high adsorption capacity, charge transfer and separation capabilities and non-toxicity. Our research team has devoted more than ten years to the study of aluminate and aluminate based composites, mainly focusing on their photoluminescence, adsorption and photocatalytic activities. The effects of different divalent ions and different contents of mixed components on the photoluminescence and photocatalytic activities of MAl2O4 and MAl2O4based composites were investigated. The internal correlation mechanism between photoluminescence and photocatalytic activity has also been deeply explored. A variety of intelligent algorithms including back propagation neural network algorithms, whale algorithms, genetic algorithms and particle swarm algorithms have been developed to predict the adsorption or photocatalytic activity of aluminate or aluminate based composites. These studies summarized from the single component aluminate to the construction of heterojunction composites, from the degradation of dyes to the degradation of drugs, from the synthesis of mechanical to the synthesis of morphology and performance regulation, combined with the intelligent optimization algorithms to gradually achieve the optimal synthesis of the best catalyst.
- 23. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 2 Encoded Surfaces by Stochastic Processing of Nanoscale Materials Prof. M. Serdar ONSES Department of Materials Science and Engineering ERNAM – Nanotechnology Research and Application Center Erciyes University Abstract: The design and development of novel encoded surfaces are of great research interest in today’s world for use in anti-counterfeiting, authentication, data security and biotechnology applications. A highly promising approach that has gained recent attention involves the exploitation of physically unclonable functions (PUFs). The concept of PUFs refers to the exploitation of a physical system in authentication applications for generating a response as a result of an input challenge. The physical system in the PUF has a unique and unclonable response to a particular challenge. PUFs can be constructed by using intrinsically stochastic processes, which produce random features. The strong interest on these systems emerges from the impossibility of predicting the response by the manufacturer and third parties.The unique characteristics of nanomaterials, in particular, are highly suitable for fabrication of PUF based encoded surfaces. This talk will focus on the instability driven generation of encoded surfaces using different forms of nanoscale materials. We have recently shown that dewetting instabilities in nanoscopic films and stochastic deposition of materials via electro spraying are effective strategies to generate PUFs. Polymers, organic semiconductors, inorganic thin films, graphene, colloidal gold nanoparticles and quantum dots formed randomized domains with distinctive photophysical and structural properties using these processes.Image analysis and feature matching algorithms confirmed that such encoded surfaces are unclonable in nature and provide a suitable platform for authentication and anti-counterfeiting applications.
- 24. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 3 Porous Nano Carbons from Biowastes: Development Criteria Prof. Dr. GurumurthyHegde Director, Centre for Advanced Research and Development (CARD) CHRIST University, Bengaluru 560029 gurumurthy.hegde@christuniversity.in or murthyhegde@gmail.com Abstract Due to ever-growing industrial revolution left behind tones of biowastes in to the nature. Biowastes are one such kind of wastes which need to be addressed effectively otherwise negative effects will spread soon. Due to their lignocellulosic nature, biowastes materials are having potential to produce porous structure in them. Here in this talk, I summarize the methods of producing porous nanoparticles from biowaste materials, tuning them effectively with respect to temperature, time and size. These porous nanostructures are having nano sizes ranging from 20 nm to 200nm with surface area changing from 2 to 3000 m2 /g. One of the striking feature of these nanoparticles is their high dispersion quality as evidenced from its Zeta potential values. We tested few of these materials for energy, water and health related applications. These materials are highly non-toxic and environmental friendly. Present talk explains in details about usingbiowaste materials for making porous nanoparticles and then its use in innovative applications. Keywords: biowaste, oil palm, nanoporous, energy, water and health
- 25. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 4 Synthesis, Characterization And Antimicrobial Activities of Transition Metal Complexes Derived From 1-(((4,6- dimethylpyrimidin-2-yl)imino)methyl)naphthalen-2-olSchiff Bases D.T. Sakhare U.G, P.G. & Research Centre, Department of Chemistry, Shivaji, Art’s, Comm. & Science College Kannad.Dist. Aurangabad.431103, (M.S.) India. E-mail- sakharedhondiram@yahoo.com ________________________________________________________________ Abstract: A novel Schiff base ligand has been synthesized by the condensation of 2- amino-4,6-dimethylpyrimidine and 2‑hydroxyl-1-naphthaldehyde. Metal complexes of the Schiff base were prepared by the reaction of the Schiff base and iron nitrate in ethanol solution. The complexes isolated, washed and dried. The Schiff base is pale yellow, while cobalt complexes is light yellow.The synthesized compounds have been characterized by FT-IR, 1 H-NMR and UV-Vis techniques for the ligands and FT-IR, UV-Vis, all reactions monitored by TLC, molar conductivity and magnetic susceptibility measurements for the corresponding complexes. General formula of complexes are [M(L1)2(H2O)2]. The complexe is paramagnetic. The results of the molar conductivity measurements indicated that all complexes are non-electrolytes in (DMSO). An octahedral geometry for all the complexes of. The ligands are bidentate, (L₁) through phenolic (OH) and azomethine nitrogen.The ligand and its complexes were screened for their antifungal and antibacterial activity against Aspergillus niger, Penicillium chrysogenum, Fusarium moneliforme, Aspergllus flavus and Escherichia coli, Salmonella typhi, Staphylococcus aureus, B. subtilis. The result indicated that the complexes exhibited good antifungal and antibacterial activities. Keywords:Heterocyclic Schiff bases, 2‑hydroxyl-1-naphthaldehyde, 2-amino-4,6- dimethylpyrimidine, Antimicrobial Activity.
- 26. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 5 Crystal structure determination, molecular docking and dynamics of arylidenecyanoacetates as potential JNK-3 inhibitors for Ischemia Reperfusion Injury Chandan R1 , K.S.Kiran1* , Chaithanya M.S2 , Aditya M3 , 1 Department of Physics, Jain Deemed-to-be University, Bangalore 2 Department of Quality Assurance, Shri Siddaganga college of pharmacy, Tumkur 3 Department of Biotechnology, Siddaganga Institute of Technology, Tumkur Abstract: Castrate resistant prostate cancer (CRPC) is a form of prostate cancer that keeps proliferating even during low expression of testosterone in the body. It is associated with increased androgen receptor (AR) signalingbrought about by elevated intratumoral androgen biosynthesis and AR amplification. Aldo-keto reductase family 1 member C3 (AKR1C3) catalyzes the formation of potent AR ligands from inactive precursors and is one of the most upregulated genes in CRPC.The present study was aimed at determining crystal structure of the ligand by x-ray methods and to perform molecular docking and molecular dynamics studies of the synthesized molecules against AKR1C3. From the results obtained it was found that the MMPBSA binding energies of ligands ADM is -7.3109 kcal/mol and BDM is -4.3277.This has created a new rational approach to drug design, where the structure of drug is designed, based on its fit to structures of receptor site, rather than basing it on analogies to other active structures. The above compounds are binding strongly with Aldo-keto reductase family 1 member C3 protein.
- 27. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 6 Magic of Red Mega 480 with Silver Nanoparticles Vadiraj B Tangod* *Department of Physics, GovernmentFirstGradeCollegeforWomen’s,OppositetoRNShettyStadiumOffice Dharwad-580008, Karnataka, India. *Corresponding Author: vadirajtangod@gmail.com Abstract In recent years, a burst of research activity has been seen in the synthesis and characterization of noble metals like nano silver, and copper particles. Materials in the nanometer regime display wonderful size-dependent optical, electronic, magnetic, and chemical properties that are remarkably different from their bulk behaviour due to their unique properties of high surface area and exceptional surface activity. We used the chemical reduction method to synthesise silver nanoparticles, which are in the 4–12 nm size range. The optical properties of isolated colloidal particles, and in particular their dependence on particle size effects, have been intensively investigated through Mie’s scattering theory. In the present case, the absorption spectra of silver nanoparticles of size 4–12 nm have a maximum peak in the range 400–410 nm, respectively, related to the plasmon resonance formed due to the nanosized silver nanoparticles. This absorption band (surface plasmon resonance, SPR) results from interactions of free electrons confined to small metallic spherical objects with incident electromagnetic radiation. The observed plasmon resonance band shows the silver nanoparticles are spherical in shape. Optical absorption and fluorescence of the highly fluorescent laser dye Red Mega 480 in alcohol solvents with the attachment of silver nanoparticles show quenching in absorption and fluorescence intensities. This is due to size, shape, coupling between silver nanoparticles and dye, and energy transfer between silver and dye. Quenching of fluorescence in the presence of nanoparticles for Red Mega 480 leads to many applications, especially advancements in biomolecular labelling, fluorescence patterning, and chemotherapy in cancer treatment. Key words: nanoparticle, fluorescence, absorption, silver, Red Mega 480
- 28. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 7 Investigation of Cations with Zirconium substituted in Calcium hexa ferrites. J. N. Christy Department of Physics, Hislop College, Nagpur jnchristyngp@gmail.com Abstract Calcium hexa ferrites offers a promising material for industrial applications because of its good magnetic, electrical, mechanical, and magneto-optical properties along with perfect thermal and chemical stability and has been a subject of interest due to narrow range of particle size distribution. The magnetic properties of these hexa ferrites can be tuned by making suitable metallic substitutions foriron(Fe3+ ) with paramagnetic and diamagnetic cations. So, an attempt was made to study the structural and magnetic properties of Calcium hexa ferrites substituted with Co2+ and Zr4+ and Zn2+ and Zr4+ . However, after an extensive literature survey this composition has never been reported and we have successfully synthesized these two series for the first time.The hexagonal ferrites were prepared bysol-gel auto combustion method and the structural and magnetic properties for the two samples were investigated. The microstructure and morphological studies were also analysed. Coercivity and remanence magnetization can be easily controlled by varying substitution making it useful for recording media. Keywords:Calciumhexaferrite,magnetoplumbite,Sol-gelmethod, Magnetic analysis.
- 29. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 8 Effects of Ce4+ doping on the electrical properties of (Bi0.5Na0.5)0.94Ba0.06TiO3 ceramic Amrita Singh Acharya Institute Of Graduate studies,Bengaluru-560107 Corresponding author:amritasingh.bgp24@gmail.com Abstract- The CeO2 doped (Bi0.5Na0.5)0.94Ba0.06TiO3(BNTBT6) ceramics were fabricated by a conventional solid state reaction method. The influence of CeO2 doping on the microstructure and various electrical properties of BNTBT6 ceramics was investigated. X-ray diffraction patterns and the lattice parameter investigations revealed the formation of phase pure materials with tetragonal structure, with tetragonality parameter c/a increasing from 1.0013 to 1.0306 at x=0.6%and then decreasing to 0.7173 at x=1mol% with increase of concentration till x=1 mol% and Williamson-Hall plots indicated crystallite sizes ranging from 34nm-92nm for Ce4+ concentration from 0.2 to 1 mol%. SEM studies indicated that substitution of Ce4+ for Ti4+ at the B-site led to a significant increase in grain size for 0.4 mol % of CeO2. Thus, CeO2 doping is seen to produce significant grain growth of BNTBT6 ceramic, assumably due to its densification. Various electrical properties such as complex permittivity and conductivity of BNTBT6 ceramics are obviously changed with doping a small amount of CeO2.Temperature dependent real part of complex permittivity showed a peak at 400o C at all the test frequency ranges. Frequency dependent dielectric loss tangent showed peakscorresponding to 200o C, 250o C, and 300o C for almost all the compositions with CeO2 substitution up to 1 mol %. A.C activation energies computed using Arrhenius relation in the temperature range of 325o C-500o C showed maxima at ~100 KHz for the BNTBT6 ceramic composition having Ce4+ concentration from 0.2 to 0.8 mol%.
- 30. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 9 Reutilization of carbon from exhausted water filter cartridges(EWFC) for decontamination of water: An innovative waste management approach. Prachi P. Botea , Samadhan P. Pawara , Govind B. Kolekarb , Anil H. Gore a,c, * a Department of Chemistry, Rajarshi Chatrapati Shahu College, Kolhapur, 416005, MS, India b Fluorescence spectroscopy Research Laboratory, Department of Shivaji University, Kolhapur, 416005,MS, India c Tarsadia Institute of Chemical Science, Uka Tarsadia University, Bardoli, 394350, Gujrat, India * Corresponding author : anilchem@gmail.com Abstract: Since from the last couple of decades, the waste and its management has became the most prominent problems that the world is facing serious issues nowadays. Most of the waste in the environment can be reutilized very easily via simple physical/chemical treatments. Under this, we have proposed a novel, simple, economical, sustainable, and renewable approach for cleaning polluted water by proper utilization of carbon from the waste water filter cartridges (WFC). The activated carbon (AC) from the environmental WFC was obtained through simple reactivation by a moderate physical treatment in the furnace (500°C; 1hr). The results from XRD,FE-SEM, BET, and RAMAN characterization bear out the successful generation of AC from WFC (AC-WFC). In the proposed work methylene blue (MB) dye was used as a model pollutant. To estimate the maximum adsorption capacity of AC-WFC, a batch adsorption technique was implemented and it was found to be 55.62 mg.g−1 . The influence of various core parameters like solution pH, amount of AC-WFC, MB dye concentration, and the interaction period was carried out. Furthermore, AC-WFC was tested for kinds of traditional as well as emerging contaminants such as dyes, pharmaceuticals, metal ions and it showed interesting results by an unconventional method. Moreover, the study was employed for real wastewater effluents samples from industries. Most importantly, AC-WFC adsorbent showed good results for the kinds of pollutants, and support to carbon reutilization from WFC is possible with nominal treatment and can be used for environmental remediation on a commercial scale.
- 31. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 10 Enhanced Near-Infrared Photoluminescence Nd3+ Ions Doped in Borate Glasses Containing Silver Nanoparticles N. Chowdareddy1, 2 ,G. Ravitheja1 ,Ashok R Lamani 1, * 1 Department of PG Studies and Research in Physics, Kuvempu University, Jnanasahyadri, Shankaraghatta 577451, Shivamogga, Karnataka, India. 2 Department of Physics, Vemana Institute of Technology, Bengaluru 560034, Karnataka, India. Corresponding Author*E–mail: ashok1571972@gmail.com (Ashok R Lamani) Abstract: In the current investigation, the influence of silver (Ag) nanoparticles (NPs) on photoluminescence (PL) attributes of trivalent neodymium ions activated glass specimens has been thoroughly examined and described in detail. The optimized concentration of Nd3+ ions was found to be 1 mol %. The Ag NPs were incorporated into this optimized glass composition to tune the PL properties and associated parameters to substantial magnitudes.The presence and distribution of Ag NPs were confirmed using transmission electron microscopic analysis. The contribution of Ag NPs was ascertained utilizing the luminescence enhancement factor (LEF). The LEF for the PL emission peak located at 1055 nm was enhanced from 1.33 to 2.53 when the AgNO3 content increased from 0.2 to 0.6 mol %, although the LEF decreased at 0.8 mol % to 2.38. The Judd Ofelt intensity parameter, the Ω2 increases with respect to AgNO3which suggest the Nd3+ occupies more asymmetrical sites in the Ag NPs containing glasses. All these attenuations were accredited to the local field induced by surface plasmons of Ag NPs when the glass specimens excited with suitable electromagnetic radiation. The quantum efficiency,stimulated emission cross-section, and emission bandwidth magnitudes of PL emission transition of Nd3+ ions located at 1055 nm were increased with increase of Ag NPs inclusion up to 0.6 mol %. This instantiates that the inclusion of Ag NPs to the optimized glass composition by 0.6 mol %, making it a beneficial host for optical amplifier and laser functionalities. Keywords: Reducing agent; Silver nanoparticles; Borate glasses; Neodymium ions; Photoluminescence.
- 32. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 11 Graphene-based TiO2 nano-composite for the removal of antibiotic from aqueous media V. Padmaja 1 , P. Sri Chandana2,* 1 Research Scholar, Jawaharlal Nehru Technological University Anantapur, Anantapuramu, India. 2 Professor, Annamacharya Institute of Technology & Sciences, Kadapa, Affiliated to Jawaharlal Nehru Technological University Anantapur, Anantapuramu, India * Corresponding author: srichandanaloka@gmail.com Abstract: Pharmaceuticals are a class of emerging contaminants that pose a great problem due to their improper disposal. Effective treatment protocols for the elimination or at least effective degradation of these pharmaceuticals is of importance and need an urgent consideration. Graphene-oxide (GO), a mono-atomic layer of carbon with a single nanometer thickness is an excellent adsorbent material because of the huge specific surface area. When such a material is combined with semiconductor like TiO2 it helps in charge separation during photocatalysis process. Ciprofloxacin (CIP) is an antibiotic which is a third-generation fluoroquinolone agent is popularly prescribed worldwide. After the intended use it eventually ends up in wastewater. In this study, adsorptive removal of CIP was studied with GO, TiO2 and GO-TiO2 nanocomposite to establish the treatment system first. Materials were properly characterized for morphology and structure using techniques such as X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). Removal of CIP was by the nano materials with varying doses were studied and the results were obtained. UV- Vis spectrophotometer was used to quantify the removal of CIP. The optimal experimental conditions for the removal of CIP was established for various parameters such as pH, dosage of sorbent, CIP concentration, contact time etc. Promising results were obtained suggesting the efficacy of the method for the removal of CIP from the aqueous media. Further the said adsorbents will be subjected to photocatalysis for the complete elimination of the adsorbed CIP. Keywords: Adsorption, Morphology, Removal, Photocatalysis.
- 33. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 12 Analysis of Microstructure of Nanomaterial IncorporatedOrdinary Portland and Portland Pozzolana Cement Mortars N.Avinash Reddya ,Dr.P.Sri Chandanab a Research Scholar, Jawaharlal Nehru Technological University Anantapur, Ananthapuramu - 515002,Andhra Pradesh, India. b Annamacharya Institute of Technology & Sciences,Kadapa, Affiliated to Jawaharlal Nehru Technological University Anantapur, Ananthapuramu--515002,Andhra Pradesh, India. Corresponding author:srichandanaloka@gmail.com Abstract: Nanomaterials have emerged as a promising pathway for developing environmentally sustainable cementitious materials for construction applications. This study investigated the utilization of nano TiO2 in Ordinary Portland and Portland Pozzolana cement mortars. Comprehensive microstructure analysis was performed using scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy- dispersive X-ray spectroscopy (EDAX). SEM and EDAX gave insights into the elemental composition and morphology of the cement matrix. Furthermore, the XRD peaks validated the presence of Ti peaks and additionally confirmed the presence of calcium silica hydrates, silicates, and portlandite in the cement matrix. The microstructural analysis provided evidence that nano TiO2 can be effectively incorporated into the cement matrix to enhance the properties of cementitious materials. Keywords: Nano TiO2, CSH,CH, OPC, and PPC
- 34. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 13 Characterization Studies on Adipic Acid Doped Ninhydrin Crystal Grown by Solvent Evaporation Method at Room Temperature. N. Y. Sugirtha Suni Department of Physics, Noorul Islam Centre for Higher Education, Kumaracoil, Tamilnadu, India. sugirthasuni@gmail.com Abstract Adipic acid doped Ninhydrin crystals were successfully grown within 38 days using solvent evaporation method at room temperature. The grown crystal was colourless with an average size 7.5mm×2.5mm×1.75mm. The grown crystals were characterized by PXRD analysis, FTIR analysis, UV-Visible spectral analysis and TG/DTA analysis. The functional groups present in the crystal was confirmed by FTIR spectral analysis. Purity and Crystallinity were confirmed by PXRD analysis. Transparency of the crystal was confirmed by UV spectral analysis. Thermal stability of the crystal was studied by TG/DTA analysis. Keywords: Adipic acid, Ninhydrin, PXRD, FTIR, UV-Visible, TG/DTA.
- 35. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 14 Gas Sensing Application of Nanocrystalline Ferrites Synthesized by Citrate-gel Auto-combustion Method Laxmi J. Hathiya1* , Deepshikha Rathore2 and Hiren. H. Joshi1 1 Department of Physics, Saurashtra University, Rajkot-360005, Gujarat, India 2 Amity School of Applied Sciences, Amity University Rajasthan, Jaipur-303002, Rajasthan, India * E-mail: laxmihathiya864@gmail.com Abstract: The nano-crystalline mixed ferrites by using the divalent metal ions wereprepared by the citrate-gel auto-combustion technique.The particle size for eachsample was determined by employingthe powder X-ray diffraction and TEM analysis.The energy band gap of prepared nano-structured ferrite powders was found by the Tauc plot obtained using UV DRS absorbance data.To fabricate the gas- sensing device of nanocrystalline ferrites, the fine powders were pressed in the form of pellets.The gas sensitivity of the material was determined by the change of its resistance in the presence of gas and air atmosphere. To study the sensitivity (%) of the prepared gas sensingdevices, the experiment was performed as:(i) by varying the gas concentration (ppm) at a fixed temperature (℃) and (ii) by varying the temperature (℃) at a fixed gas concentration (ppm).Among all the samples, MgFe2O4 exhibited the highest sensitivity with 82% even at room temperature. The mixed type of semiconducting trend (n and p-type) was observed by all the gas sensing devices for both gases at different temperatures.The sensitivity increased with the temperature and peaked at its operating temperature for all the prepared ferrite devices.The maximum sensitivity (Smax) of around 99% was exhibited by Mn0.8Ni0.2Fe2O4 and MnFe2O4 at different temperaturesand concentrations of ammonia and ethanol gases, respectively. This study indicates that all the prepared nano-structured ferrites are efficient to detect gases and can be used as gas sensors. Keywords: Nano ferrites, Auto-combustion, MOS-based sensor, Gas sensitivity
- 36. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 15 Dielectric and Mössbauer study of PbSnO3 S.P. Kubrin1* , I.P. Raevskii1 , D.A. Sarychev1 , N. M. Olekhnovich2 , A. V. Pushkarev2 , Yu. V. Radyush2 1 Research Institute of Physics and Faculty of Physics, Southern Federal University, Rostov-on- Don, Russia. 2 Scientific and Practical Materials Research Centre, National Academy of Sciences of Belarus, Minsk, Belarus. *Coresponding author: stasskp@gmail.com Abstract: ThePbSnO3ceramicsamples were prepared by high-pressure (5GPa) solid-phase synthesis. Atroomtemperaturethesamplepossessesmonoclinic perovskite structure. Figure1 shows the temperature dependencies of dielectric permittivity ε(T) for PbSnO3 sample in the range of 15 – 450K. The ε(T) dependencies have two anomalies near 200K and 370K. The anomaly of ε(T) at 370K corresponds to cubic into monoclinic phase transition. This transition result in appearing of ferroelectric ordering. Near 200K the ε(T) have frequency dependent maxima. Sn Mössbauerspectratakenincubicphase (T> 370) aresingle line with isomer shift value corresponds to Sn4+ . Below 370K the quadrupole splitting appearson Mössbauer spectra (Fig. 2). The quadrupole splitting value does not change significantly in the temperature range of 300 – 350K. Near 200 K the quadrupole splitting increases abruptly and slowly increases with a further decrease in temperature. The appearing of quadrupole splitting at 370Kassociatedwith lowering of Sn4+ local symmetry due to the offsets of oxygen ions. The increase in quadrupole splitting value at 200K indicates additional lowering of Sn4+ local environment symmetry. These changes are caused by structural order-disorder phase transition due to displacements of oxygen and lead ions.
- 37. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 16 Structural, Microstructural and Humidity sensing Studies of ZnFe2O4/Bi2O3 composite Veena V.S1,2 , Amith Yadav H.J1 , Jagadeesha Angadi V3* 1 Department of Studies in Physics, Davangere University, Davangere,Karnataka,INDIA 2 Department of Physics, Government First grade College, Koratagere, INDIA 3 Department of Physics, P.C.Jabin Science College, Hubballi, Karnataka, INDIA *Corresponding author: Jagadeeshbub@gmail.com Abstract. Transition metal doped ferrites are an excellent choice for humidity sensors applications. Considering this, the current study involves the preparation of bismuth (Bi3 + ) oxide-substituted zinc ferrites by the solution combustion technique. The typical formula for these ferrites is Bi@ZnFe2O4 (x = 0–0.05). An investigation of the influence of the Bi3+ substitution on the structural, microstructural, and humidity characteristics was carried out. Up to 0.2 mol/% dopants, the X-ray diffraction analysis showed evidence of the creation of a cubic spinel structure. The Scherer technique, which has a range of 20 to 39 nm, was used to determine the average crystallite size of the sample. When nanoparticles are included in samples, the total amount of surface area that is necessary to favour adsorption processes in the samples is significantly increased. Micrographs taken using a scanning electron microscope revealed that the surfaces in question had a porous and irregular structure, as evidenced by the existence of holes and pores. The superparamagnetic behavior of the sample was confirmed by vibrating magnetometer. We noticed a decrease in resistance as the relative humidity increased from 11 to 97%, and we saw an increase in the sensing response as the relative humidity increased. Both of these trends were detected over the whole range of relative humidity. It has been determined that the highest humidity hysteresis occurs when the relative humidity is 54%. The amount of time it took for the sensor to respond was timed at 79 s, and the amount of time it took to recover was timed at 91 s. There is not much of a disparity between the sensing response and recuperation time. The higher concentration of Bi i. e 0.03 mol% exhibits excellent humidity sensing behavior. Because Bismuth is nonmagnetic material, due to this material morphology increases. Morphology increases the humidity behavior of the samples increases in our results.
- 38. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 17 Polyaniline Nanocomposites Thin Films For Sensor Application Jakeer Husain1 , Jaisheel Sagar1 Dept. of Eng Physics, Faculty of Engineering and Technology, KBNU Gulbarga,karnataka Corresponding author: jakeerhusain21@gmail.com Abstract: TiO2 nanoparticles were successfully prepared by sol-gel method. Nanocomposites of PANI and TiO2 have been synthesized using the in situ polymerization method for different concentrations of nano TiO2 powder. The formation of polymer surface morphology of Polypyrrole – TiO2 nanocomposite was elucidated using Scanning Electron Microscopy. AC conductivity studies of PANI - TiO2 composites for different wt% show thermally activated behaviour. The conductivity was found to increase with the increase in temperature indicating the semiconducting behavior of all the compositions. Maximum conductivity was observed in 50 wt% of TiO2 in PANI. On exposure of the composites to LPG, increase in resistance was observed with the increase in gas concentration. Maximum sensitivity for gas sensing was observed in the composite of 50 wt% TiO2 in Polyaniline . Keywords :Conductivity, LPG, SEM, Nano.
- 39. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 18 Synthesis of TiO2/Fe2O3/PVA Nanocomposite for the aqueous dye degradation Mahesh Bhat1* , Abhilash MR2 and Mamatha SV3 1 Department of Chemistry, Poornaprajna College, Udupi-576101 Karnataka, India 2 DOS in Environmental Science, University of Mysore, Manasagangothri, Mysore 570005, Karnataka, India 3 Department of Chemistry, GSI College, Mysore 570 004, Karnataka, India Abstract: In this study, we have successfully synthesized a TiO2/Fe2O3/PVA nano- composite using a solution phase method. The synthesized nano-composites were subjected to various characterization techniques for comprehensive analysis. The shape of the synthesized nano-composite was determined using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDX). The synthesized nano-composites were then utilized in a photocatalytic dye degradation study, specifically targeting the degradation of Congo red, Crystalline violet, and Methyl red dyes in a solution phase. Batch operations were conducted in the liquid phase to investigate the influence of various experimental parameters such as pH, dose, dye concentrations, and time. By evaluating these parameters, we determined the optimum conditions for the efficient degradation of the dyes. Our findings indicate that the present nano-composite can effectively serve as a photo catalyst for dye degradation, particularly under basic conditions. Keywords: TiO2, PVA, Nano composite, SEM-EDX, Photo catalyst, dyes
- 40. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 19 Mechanical Properties in Spinel (MgCr2O4) Phase Containing Alumino-Silicate Glass-Ceramic Mrinmoy Garai*a , Arianit A. Rekab , a Materials Science Centre, India Institute of Technology (IIT), Kharagpur, India. b Department of Chemistry, Faculty of Natural Sciences and Mathematics, University of Tetova, Blvd. Ilinden n.n., 1200 Tetovo, Republic of North Macedonia Corresponding authors: mrinmoygarai@iitkgp.ac.in Abstract: This study is to review the strong effect of chromium (Cr6+) as a nucleating agent for Al2O3-SiO2-MgO-B2O3-K2O-F glass-ceramic (a kind of ceramic). The distinctive feature of this study is the induction of nucleation in mother glass matrix on addition of Cr6+ content performing only annealing heat-treatment (600±10°C). The melt-quenched glass is amorphous, which in presence of Cr6+ content became crystalline with predominant crystalline phase Spinel (MgCr2O4). FESEM study revealed the development of 200–500 nm sized crystallites in Cr6+-doped glass- ceramic microstructure which directly correspond to the mechanical properties. Mechanical properties in terms of machinability of the Cr-doped glass-ceramic was thus better compare to glass From nano-indentation measurements, the hardness and Young’s modulus were estimated 0.6(±0.5) and 25(±10) GPa, respectively for base glass and increased to 8.4(±2.3) and 94(±21) GPa, respectively for Cr-doped glass- ceramics. Hardness measured from micro-indentation tests for the base glass was 3.63 (±0.18) GPa which increased to 3.94(±0.20) GPa for Cr-containing glass-ceramic.
- 41. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 20 Study of Red/Blue Upconversion Emission in rare earth ion doped glasses Bijay Gupta*a , Ghizal F. Ansaria , a Department of Physics, Madhyanchal Professional University, Bhopal, India,462044 * Corresponding author: bkgupta252@gmail.com Abstract Rare earth ion as Tm2O3/Yb2O3 doped tellurite base glasses were studied. Synthesis of glasses were done by melt and quench method. XRD characterizations were used to find the crystalline and structural properties. Rare earth ions alter the physical and optical properties of glasses. The measured luminescence spectra exhibit intense emissions in visible range. Various radiative properties of the excited level of rare earth ions ion were studied for the glasses. Key words: Tellurite glass, melt and quench method, rare earth ions.
- 42. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 21 Formulation and Evaluation of Mucoadhesive Buccal Films of Propafenone HCl P. Madhuri1 *, Gadela Venkata Radha2 1 Department of Pharmaceutics, GITAM School of Pharmacy, Rishikonda, Visakhapatnam, Andhra Pradesh, INDIA – 530045. E-mail: madhuri.vanam1@gmail.com Abstract Buccal drug delivery is the most suited route for local as well as systemic delivery of drugs. Conventional tablet (150mg) Propafenone HCl (PP) is available in market is used three times a day for effective treatment of supraventricular tachyarrhythmiasis. The oral absorption of Propafenone HCl is dose highly variable, with short biological half life 1.0 hr and has high first-pass metabolism leading to low bioavailability. Decrease in frequency of high dose drug via buccal drug release. There is a need to formulate mucoadhesive buccal film of PP that promotes systemic delivery, bypass of hepatic first pass metabolism and improved bioavailability and reduce the repeated administration. PP buccal films were prepared by a solvent- casting technique using various concentrations of mucoadhesive-polymers such as Hydroxyl propyl methyl cellulose (HPMC) K4M, K15M and K100M as film forming as well as rate retarding polymer with different combinations of mucoadhesive polymers like Sodium CMC, Hydroxy Propyl Cellulose (HPC), propylene glycol (PG) was selected as plasticizer and ethyl-cellulose as backing-layer, which acts like a patch providing unidirectional drug release. Prepared films were evaluated for their weight variation, thickness, surface-pH, swelling-index, and drug content uniformity, in vitro residence time, folding endurance, tensile strength and in vitro release and permeability studies. The Fourier Transform Infra-Red (FTIR) spectra and DSC thermogram showed no interaction, and Physico-chemical characteristics were found within the limit. All the developed buccal films exhibited optimal physico mechanical and pharmaceutical characteristics. From the in vitro drug release studies, this study concluded that the buccal film was successfully formulated by using a combination of HPMC K100M and HPC with the potential drug retardant characteristics compared with the polymers HPMCK4M and HPMCK15M by increasing its contact time and controlling the release. The optimized formulation followed zero order kinetics. The formulation of PP mucoadhesive buccal film was found to be satisfactory and
- 43. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 22 reasonable. The in vivo pharmacokinetic study was conducted in healthy rabbits and it was observed from the results that the oral bioavailability of optimized formulation (PP18) was increased significantly when compared to the marketed formulations. Relative bioavailability with respect to marketed formulation (Rythmol) was found to be 124.9. The increased bioavailability may be due to the mucoadhesive mechanism of dosage form in buccal area for longer duration.
- 44. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 23 Sulfurization time effect on Cu2SnS3 films under N2S vapor pressure G. Phaneendra Reddy1,2 , C. Sumalatha1 , T. Sreenivasulu Reddy3 , Tivanov M.S.4 , Gremenok V.F.5 , K.T. Ramakrishna Reddy1, * 1 Solar Energy Laboratory, Department of Physics, Sri Venkateswara University, Tirupati - 517 502, India.; 2 Department of Physics, Dr. YSR Architecture and Fine Arts University, Kadapa-516162, Andhra Pradesh, India.; 3 Department of Physics, Viswam Engineering College, Madanapalle, AP - 517325, India.; 4 Faculty of Physics, Belarusian State University, Nezavisimosti 4 av., 220030 Minsk, Belarus.; 5 Scientific and Practical Materials Research Centre, National Academy of Sciences, 220072 Minsk, Belarus. *Corresponding author e-mail: ktrkreddy@gmail.com Abstract: Cu2SnS3 (CTS) films were deposited successfully on glass substrates for investigation of sulfurization time (ST) on the physical properties of CTS thin films prepared by sulfurization of Cu/Sn/Cu metallic precursors in sulphur ambient at 450 °C for 30-180 minutes. The grazing incident X-ray diffraction and Raman spectroscopy patterns have indicated polycrystalline form and monoclinic structure with C1c1 space group of obtained Cu2SnS3 films. The variation of different structural parameters has been researched and reported as a function of sulfurization time. The scanning electron microscopy revealed the densely packed structures. The optical parameters such as band gap energies, the absorption coefficients of thin films Cu2SnS3 have been determined and analysed by transmission and reflection spectra. The films have been found to be as direct-gap semiconductors. All the sulfurized films showed p-type conducting nature. The obtained results indicated that single phase CTS films prepared in the sulfurization time of 120 min could be used as an absorber layer for the application of thin film solar cells. Keywords: CTS, thin films, structural parameters, band gap energy.
- 45. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 24 A Structural Report on Pb(Fe0.5Nb0.5)O3 – Pb(Co0.33Nb0.67)O3 Solid Solutions Nagaraja T1 , Vasant Sathe2 , Basavaraj Angadi1 * 1 Department of Physics, Bangalore University, Jnanabharathi Campus, Bangalore – 560 056, India 2 UGC-DAE-Consortium for Scientific Research, University Campus, Khandwa Road, Indore, 452001, India * Corresponding author email id: brangadi@gmail.com Abstract: The multiferroic solid solution of (1-x)Pb(Fe0.5Nb0.5)O3 – (x)Pb(Co0.33Nb0.67)O3 for (0.1 ≤ x ≤ 0.5) (shortened as PFCN), were synthesized using a single-step solid-state reaction method. The structural, microstructural, and Raman studies were reported. The Rietveld refinement of room temperatureX-ray diffraction data reveals the monoclinic phase with the Cm space group and structural parameters were reported. Field emission scanning electron microscope images confirm the densely packed, uniform coarse arrangement in all the samples. In x = 0.4 & 0.5, small porous voids were noticed, indicatinga reduction in the densities. According to stoichiometry, energy dispersive spectroscopy reveals the existence of Pb, Fe, Co, Nb, and O elements. The Raman spectra show a decrease in the intensity and changes in the spectral shape of B-localized F1u(~250 cm-1 ) and BO6 octahedral rotation F1g(~260 cm-1 ) modes around the characteristic temperature, clearly indicating the structural change above the Tm.
- 46. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 25 Magnetic Response of Nd+2 doped Cobalt Chromite Nanoceramics V.H.Choudapur1* V. Jagadeesha Angadi2* 1 Department of Physics, School of Advanced Sciences, KLE Technological University, Hubballi, India 2 School of Physical Sciences, P C Jabin Science College, Hubballi, India *Corresponding authors: jagadeeshbub@gmail.com, veena_choudapur@kletech.ac.in ABSTRACT Cobalt Chromite ceramics have been attracting extensive scientific and technological concern due to their unique combined features such as spontaneous magnetization along with electric polarization of spin spiral origin. Herein, the influence of neodymium doping on the structural, morphological, dielectric and magnetic properties of cobalt chromite ceramics synthesized via solution combustion protocol is reported. The cubic spinel phase of CoCr2O4 was confirmed from the x-ray diffraction patterns and the spherical shaped cluster formation was observed from the electron microscopic studies respectively. A remarkably small shift in the frequency of stretching vibrations of CoO4 and CrO6 clusters respectively due to neodymium doping and the formation of Co-O bond was revealed in the fourier transform infrared spectral analysis. The temperature dependent magnetization curves (ZFC and FC curves) are studied to understand the ferrimagnetic – paramagnetic transition behavior. Thus the influence of Nd doping on the M-H curves is analyzed in comparison to the host material. Due to these interesting properties these nanoceramics can be implemented for various photo catalytic /gas sensing applications. Keywords: Nd+2 doping, ferrimagnetism, normal spinel, Curie temperature
- 47. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 26 Environmental Pollution: A Serious Threat to Global Ecosystems Preethi Bevinathalapura Shivaswamy1; LingrajuHonnuru Gurusiddappa2; Charan Kumar Kachintaya3 and ShankrammaKalikeri* 1* Division of Nanoscience and Technology, School of Life Sciences, JSS Academy of Higher Education and Research, Mysuru – 570 015, India 2 Department of Environmental Science, (School of Life Sciences), JSS Academy of Higher Education and Research, Mysuru – 570 015, India 3 #9A, Shankar Colony I Cross, SN Pet, Ballari - 583101, India *Corresponding author:shankrutk@jssuni.edu.in Abstract: The harm that environmental pollution poses to all life forms on earth, especially when dye-contaminated wastewater from the textile industry is released, is a major concern for international communities. Synthetic and non-biodegradable colours are released into natural bodies of water, harming aquatic ecosystems, human health, and aesthetics. It is vital to use water sources effectively and responsibly as global water scarcity worsens. Numerous industries, particularly the textile industry, make a substantial contribution to the creation and use of different dyes. While manufacturing, about 15% of the world's production of these dyes winds up in natural water sources. The intricacy and durability of these chemical compounds make conventional procedures for dye removal frequently ineffective.As a result, advanced oxidation processes (AOPs), like photo catalysis, have become effective methods for treating wastewater. The ability of nanoparticle (NP) catalysts to remove various organic colours from various types of wastewaters has attracted a lot of interest. The significance of NP-catalysed photo degradation is examined in this paper as a potential strategy to lessen the negative environmental effects of textile dye effluents. Keywords:Wastewater, Advanced Oxidation Processes,Nanoparticle,Degradation,
- 48. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 27 Enhanced Nonlinear Optical and Optical Liming Properties of Holmium Containing Borate Glasses Embedded with Silver Nanoparticles G. Jagannath* Department of Physics, Presidency University, Itgalpur, Rajanakunte, Yelahanka, Bengaluru 560064, Karnataka, India Corresponding Author *Email: jagannath.g@presidencyuniversity(G.J.) Abstract: Herein, the nonlinear optical (NLO) and optical limiting (OL) properties of silver nanoparticles (NPs) and holmium ions containing borate‒based glasses were deliberatedutilizing nanosecond laser pulses at 532 nm. Initially, we studied the NLO and OL characteristics of AgCl content varied glasses and identified that the Ho3+ ‒doped glasses containing 0.5 mol% of AgCl was found to be optimized one. Then, for further tuning of the NLO traits,thermal treatment on optimized glass was carried out at 450 °C for diverse durations. The NLO absorption (two‒photon absorption) and refraction (positive) features were noted to improve with thermal treatment duration, while the OL threshold followed an opposite trend. The enhanced NLO absorption and refraction features endorse that the Ho3+ ‒doped titled glass containing 0.5 mol% of AgCl heat treated for 35h at 450 °C is beneficial for data storage, signal processing and harmonic generation functionalities. Additionally, the enhance of NLO absorption along with decrease of OL threshold results acknowledge the same glass system is useful for OL applications for suppressing high energy coherent radiationin protecting the sensitive optical components and human eye from laser damage. Keywords: Holmium ions; Borate glasses; Nonlinear optical; Optical limiting; Optimization of silver chloride; Annealing Process.
- 49. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 28 Recent developments of advanced luminescent glasses for reddish orange emitting device applications R. Rajaramakrishna1 1 Siberian Federal University, 79 Pr. Svobodny, Krasnoyarsk, Russia, 660041 1 r.rajaramakrishna@gmail.com ABSTRACT In recent times glasses have found a very interesting and vital role in providing support for the research community to experiment and develop new nascent technologies that can mimic the novel materials which are promising for cutting-edge solid-state lighting technologies. The glasses being conventional material which can accommodate for higher concentration of rare-earth ions unlike other phosphor materials. The review work emphasis on the glasses that are recently been able to compete with the commercially available materials which makes them unique and interesting to understand theirrole in the field of solid-state light emitting device applications. Samarium (Sm3+ ) ions doped in oxide and oxyfluoride glasses whenco- doped with gadolinium (Gd3+ ) ions enhance the luminescence intensity and improves the quantum efficiency. The work focuses on bringing out the significant importance of several glass formers co-doped with samarium ions and gadolinium ions and their structural importance which alters their optical properties. Energy transfer phenomena is another interesting fact which is most often observed when gadolinium ions are used as sensitizers (gadolinium) to neighboring rare-earth ions. In the present review work the detailed analysis of various glass formers and their importance towards luminescence properties will be emphasized and compared. Keywords:Borate, Silicate, Germanate, Tellurite, Phosphate, Samarium ions, Gadolinium ions.
- 50. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 29 Lead-free ceramics based on NaNbO3 and BiFeO3 Kh.A. Sadykov1 , K.P. Andryushin2,3 , S.I. Dudkina3 , L.A. Reznichenko3 1 Chechen State University named after A.A. Kadyrov, Grozny, Russia 2 Integrated Research Institute named after H.I. Ibragimov RAS, Grozny, Russia 3 Research Institute of Physics, Southern Federal University,Rostov-on-Don, Russia e-mail: kpandryushin@gmail.com Abstract In the course of work, regularities of phase formation in the binary system (1- х)NaNbO3–x/2CuNb2O6 (0.00≤x≤0.1625, Δx=0.0125) during the preparation of polycrystalline samples were established; features of their recrystallization sintering and microstructure formation were revealed; dependence of properties on Nb2O5 qualification is shown; the phase diagram of the system containing a complex morphotropic region was constructed; the effects of low-frequency dispersion of the permittivity associated with the influence of electrical conductivity were found; – correlation connections composition–structure–properties are revealed; a scheme was developed and experimentally implemented for the modification of the solid solutions, including (Na,Li)NbO3, with Mn, Cu, Ni monoxides and complex additives MnO2+CuO, Bi2O3+Fe2O3; X-ray diffraction established sequences of emerging phase states, the qualitative-quantitative composition of which depends on the characteristics of the introduced modifiers; a set of methods established the localization of modifier ions in the structure of base solid solutions; – ways of increasing the thermal stability of BiFeO3 by doping with d- elements (Mn, Co, Ni), as well as oxides of highly charged ions (Nb+5 ,Ti+4 )are shown;the influence of the specifics of the introduced ions on the nature of connectivity and the morphology of grains of ceramics based on bismuth ferrite was established; –piezoelectric ceramic materialdeveloped, characterized by an average value of relative permittivity (ε33 Т /ε0~121), sufficiently high piezoelectric modulus (d33~45 pC/N), piezosensitivity (g33~42 mV•m/N), coefficient electromechanical coupling (Kp~0.19), high mechanical quality factor (Qm~516), and speed of sound (V1 E ~5.8 km/s), which can be used in medium-frequency radio-electronic devices operating in the receive mode.
- 51. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 30 The study was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation (State task in the field of scientific activity in 2023). Project No. FENW-2023-0010/(GZ0110/23-11-IF).
- 52. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 31 Regularities of the formation of correlation relationships composition - thermodynamic prehistory - macro-responses in systems based on (Ba,Sr)TiO3 and BiFeO3 S.V. Khasbulatov1,2 , K.P. Andryushin2,3 , S.I. Dudkina3 , L.A. Reznichenko3 1 Chechen State University named after A.A. Kadyrov, Grozny, Russia 2 Integrated Research Institute named after H.I. Ibragimov RAS, Grozny, Russia 3 Research Institute of Physics, Southern Federal University, Rostov-on-Don, Russia e-mail: kpandryushin@gmail.com ABSTRACT In the formation of the internal (crystalline, grain) structure and macroproperties of BST ceramics, the thermodynamic background plays a predominant role, which manifests itself in a consistent change in the parameters of physical media recorded by various methods, due to the transformation of the known phase diagram of a system with one tetragonal-cubic transition to a form with two morphotropic regions with coexisting tetragonal/pseudocubic and pseudocubic/cubic phases; with features of the grain landscape with secondary recrystallized ideomorphic crystallites; with the dependence of the nature of the dielectric spectra on the degree of reduction-oxidation processes in the samples. By modifying large-sized rare-earth elements (REE) Pr, Nd, Sm and mechanical activation of the solid solutions of the BST system, it is possible to increase the permittivity many times over and enhance the reverse nonlinearity, which is important when using this effect for targeted control of the electrophysical characteristics of the objects. The formation of a strong relaxation maximum ε'/ε0 and a dispersion maximum tgδ, respectively, in the vicinity of (400…600) K and (600…800) K in BiFeO3/REE is similar to the previously discovered phenomena in Bi,-Fe- containing ceramics, the priority mechanism of which is the development of Maxwell-Wagner relaxation due to the accumulation of free charges on the interfaces of components in spatially inhomogeneous media against the background of interlayer, interfacial and intraphase rearrangements. The reason for its development is the natural composite structure of BiFeO3 and BiFeO3/REE, which arises on the basis of at least four (not counting BiFeO3) Bi,-Fe-containing compounds (Bi2O3, Fe2O3, Bi25FeO40, Bi2Fe4O3), which almost always accompany the formation of BiFeO3, remaining in it in the form of ballast phases and undergoing a series of bifurcations in the above temperature ranges.
- 53. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 32 As a result of the study has developed an express method for determining the zone of extreme properties in functional materials that combine ferroelectric and magnetic ordering. The study was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation (State task in the field of scientific activity in 2023). Project No. FENW-2023-0010/(GZ0110/23-11-IF).
- 54. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 33 Macroproperties of the quasi-binary system (1-x)((Na0.5, K0.5)NbO3- Pb(Zr0.5, Ti0.5)O3)- x/2CdNb2O6 Andryushin K.P.1,2 , Glazunova E.V.1 , Shilkina L.A.1 , Pavlenko A.V.3 , Nagaenko A.V.4 , Dudkina S.I.1 , Andryushina I.N.1 , Kubrin S.P.1 , Khasbulatov S.V.2,5 , Maslyaev A.S1 , Reznichenko L.A.1 1 Research Institute of Physics, Southern Federal University, Russia 2 Kh. Ibragimov Complex Institute of the Russian Academy of Sciences (CI RAS), Russia 3 Southern scientific center of the Russian Academy of Sciences (SSC RAS), Russia 4 Southern Federal University, Institute of High Technology and Piezo Technic, Russia 5 Chechen State University A.A. Kadyrov, Institute of Mathematics, Physics and Information Technology, Russia kpandryushin@gmail.com Abstract For the first time,experimental ceramic samples of solid solutions of the quasi- binary system (1-x)((Na0.5, K0.5)NbO3- Pb(Zr0.5, Ti0.5)O3)- x/2CdNb2O6 with x=0.00; 0.025; 0.05; 0.075.It was found that all the solid solutions studied have pseudocubic symmetry. The grain landscape is heterogeneous with crystallites whose habit is either parallelepiped (“plate”) (larger grains) or formations close to cubic (small grains). The average size of large and small grains differs several times (sometimes by an order of magnitude): from ~1.7 µm (small crystallites) to ~(3...4) µm (large crystallites).It has been observed that at Т>~700K there is a sharp increase in ε'/ε0 and ε''/ε0 in all samples the faster, then lower f. This is associated with the defectiveness of the solid solutions, due, among other things, to the variable valence of Nb and Ti, and associated with this, the formation of a large number of vacancies that “have time” to contribute to the permittivity at low frequencies. At 340K< T<550K, frequency dependent maxima ε'/ε0 (Т) (most pronounced at f>10 kHz) and anomalies at ε''/ε0 (T) are formed, associated with a diffuse phase transition from the paraelectric to the ferroelectric phase. The dependence Tm(f) fallowed the Vogel-Fulcher law in all cases. In the region of cryogenic region, an anomaly in the relative permittivity was observed, probably caused by FE → FE transition.It is shown that an increase in the CdNb2O6 content does not cause any significant changes in the dielectric and elastic properties, and that piezoelectric properties change on average by ~20%. It is useful to use the obtained results of the obtained compositions in the design of electronic devices.
- 55. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 34 Improved resonant nonlinear optical characteristics and optical limiting functionality of gold nanoparticles incorporating borate glasses in the nanosecond pulse regime K. Keshavamurthy1,*, B. N. Swetha2 1 Department of Physics, Dayananda Sagar College of Engineering, Bengaluru 560078, India 2 Department of Physics, Bangalore University, Bengaluru 560056, India Corresponding Author: keshav.m85@gmail.com Abstract: We initially optimized the alkali (sodium) oxide concentration in the glass matrix by investigating the nonlinear optical (NLO) characteristics of sodium oxide varied gold nanoparticles (NPs) embedded borate based glass hosts. It was identified that the third‒order NLO features were maximum for 30 mol% sodium oxide containing glasses. For tuning the NLO features the optimized glass host bearing gold NPs thermal treatment near glass transition temperature for different dwell times was performed. The NLO characteristics were ascertained through the Z‒scan technique using nanosecond laser pulses fired at a rate of 1 kHz at 532 nm. It was noted that, the nonlinear absorption (two‒photon), refraction (negative) and third‒order nonlinear optical susceptibility magnitudes were improved with an increase of alkali content in the composition on account of increased formation of gold NPs. The NLO coefficients were further improved to higher order with annealing duration owing to the growth of gold NPs. The outcomes endorse the 30 mol% sodium oxide bearing glass embedded with gold NPs annealed for 12 hrs at 450 °C are useful for optical limiting, harmonic generation and bio‒imaging applications to work in the visible region. Keywords: Nonlinear optical; Sodium oxide content;Gold nanoparticles; Resonant optical nonlinearity; Borate Glasses; Optical limiting.
- 56. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 35 Sm3+ doped Ag NPs nucleated alkali borate glasses with enhanced photoluminescence and spectroscopic attributes B.N. Swetha1 andM. K. Kokila*,1 1 Department of Physics, Bangalore University, Bengaluru–560056, India. Corresponding Author: drmkkokila@gmail.com Abstract: The influence of Ag nanoparticles (NPs) on the improvement in photoluminescence and spectroscopic features of Sm3+ ‒doped alkali borate glasssynthesized by the melt quenching process was systematically studied and analyzed.The increasing particle size of Ag NPs with the increase of AgCl concentration (0.1 – 0.5%) causes the SPR peak to shift to a higher wavelength (red‒shift) side. Electron microscopic investigation confirmed the presence of silver NPs in the SmLAB‒1 glass sample with a median size of 4.64 nm.A significant enhancement in emission was recorded for 0.1 mol% AgCl concentration.Such improved emissionwas attributed to the enhanced local electric fieldby metallic NPs in the vicinity of Sm3+ ions and efficientenergy transfer between Sm3+ ions and silver NPs.The Judd–Ofelt parameter,Ω2 decreased as the concentration of Ag NPs increased, indicating increasedsymmetry and ionicity between the trivalent samarium ions and their ligands.These prepared glass compositions could have applications in solid‒state devices such as LEDs and display applications. Keywords: Borate glasses; Silver nanoparticles; Tri‒positive samarium ions; Photoluminescence; Judd‒Ofelt theory.
- 57. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 36 Recent developments of advanced luminescent glasses for reddish orange emitting device applications R. Rajaramakrishna1 1 Siberian Federal University, 79 Pr. Svobodny, Krasnoyarsk, Russia, 660041 1 r.rajaramakrishna@gmail.com ABSTRACT In recent times glasses have found a very interesting and vital role in providing support for the research community to experiment and develop new nascent technologies that can mimic the novel materials which are promising for cutting-edge solid-state lighting technologies. The glasses being conventional material which can accommodate for higher concentration of rare-earth ions unlike other phosphor materials. The review work emphasis on the glasses that are recently been able to compete with the commercially available materials which makes them unique and interesting to understand theirrole in the field of solid-state light emitting device applications. Samarium (Sm3+ ) ions doped in oxide and oxyfluoride glasses whenco- doped with gadolinium (Gd3+ ) ions enhance the luminescence intensity and improves the quantum efficiency. The work focuses on bringing out the significant importance of several glass formers co-doped with samarium ions and gadolinium ions and their structural importance which alters their optical properties. Energy transfer phenomena is another interesting fact which is most often observed when gadolinium ions are used as sensitizers (gadolinium) to neighboring rare-earth ions. In the present review work the detailed analysis of various glass formers and their importance towards luminescence properties will be emphasized and compared. Keywords:Borate, Silicate, Germanate, Tellurite, Phosphate, Samarium ions, Gadolinium ions.
- 58. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 37 Study of Structural, Microstructural, Vibrational and Low Temperature Magnetic Properties of NiFe2O4- CoCr2O4Nanocomposites K. Manjunatha1 , Jagadeesha Angadi V2* , Hsin-Hao Chiu1 , Ming-Kang Ho1 , Tsu-En Hsu1 , and Sheng Yun Wu1,* 1 Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan 2 Department of Physics, P.C. Jabin Science College, Hubballi, 58003, Karnataka, India * Corresponding authors:jagadeeshbub@gmail.com, sywu@mail.ndhu.edu.tw Abstract. In the present study, chemical synthesis and mechanical mixing methods were used to synthesize the NiFe2O4/CoCr2O4 nanocomposites. X-ray diffraction (XRD) patterns of CoCr2O4 and NiFe2O4 nanoparticles and CoCr2O4-NiFe2O4 nanocomposites confirms the single-phase spinel cubic structure. The morphology of the samples was studied by Field emission scanning electron microscopy (FE-SEM). Elemental compositions of the nanocomposites were confirmed by the EDX analysis. Vibration bands obtained from the Raman spectra also confirms the formation of spinel cubic structure. The M-H loop of NiFe2O4 and CoCr2O4-NiFe2O4 nanocomposites shows the ferrimagnetic nature at low temperature and room temperature, where as pure CoCr2O4 and NiFe2O4 nanoparticles shows ferrimagnetic nature at 25K and paramagnetic nature at 90 K, and room temperature. For CoCr2O4, Temperature dependent ZFC-FC magnetization curves shows two transition such as paramagnetic to ferrimagnetic transition at 86K and spiral spin order transition at 25 K. We have not observed magnetic transitions for NiFe2O4 and CoCr2O4-NiFe2O4 nanocomposites at temperature ranging from 10 to 300K. Further Over all magnetic studies confirms that the magnetization increases with increasing of NiFe2O4 mixture in to the CoCr2O4 nanoparticles.
- 59. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 38 Influence of lithium potassium zirconate nanoparticle on polyvinyl alcohol thin films Dr. Chethana M, Department of Chemistry, KLE’S Gudleppa Hallikeri College, Haveri. Abstract Polyvinyl alcohol (PVA) matrix, PVA/LiKZrO3 nanocomposite films have been fabricated by solution intercalation method with varying amounts viz., 0.5, 1.0 and 2.0 wt.%, of LiKZrO3 nanoparticles. Structural, absorption and emission characteristics and the nature of interaction of nanocomposites have been studied by FT-IR, UV-visible and fluorescence spectroscopic analysis. Key words: polyvinyl alcohol, lithium potassium zirconate, fluorescence spectroscopy
- 60. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 39 SYNTHESIS AND CHARACTERISATION OF POLYANILINE (PANI) - [Cu2Cl4L3].2H2O NANOCOMPOSITES BY INVERTED EMULSION POLYMERIZATION Ramanath Prabhu1* and T. Jeevananda2 1 Department of Chemistry, RNS Pre-University college, Bangalore-560 098. 2 R & D Centre, Department of Chemistry, RNS Institute of Technology, Bangalore-560 098. *email: Prabhu.ramanath14@gmail.com ABSTRACT: Inverted emulsion polymerization technique was adopted to prepare composite of conducting polyaniline (PANI) and [Cu2Cl4L3].2H2O complex [L= m-aminophenyl benzimidazole] by utilizing novel benzoyl peroxide as an oxidizing agent. Polyaniline ratio was varied between 10 to 90% based on the yield percentage of PANI. The prepared polyaniline (PANI) - [Cu2Cl4L3].2H2O nanocomposites were characterized by Fourier-transform infrared spectra, Four probe conductivity, X-ray diffraction, Thermogravimetric analysis and Scanning electron microscopy. The FTIR spectrum of pure PANI and its composites with [Cu2Cl4L3].2H2O shows the vibrational bands due to N-H stretching (2941-3009cm-1 ), quinoid (1621cm-1 ) and benzenoid ring stretching (1350cm-1 ), etc. Conductivity of pure polyaniline was seen to be 1.8S/cm and upon the addition of [Cu2Cl4L3].2H2Ocomplex in increasing order the conductivity decreases. X-ray diffraction of PANI- [Cu2Cl4L3].2H2O nano- composite showed two crystalline peaks at 20.83 and 25.46 (2Ѳ). TGA thermogram of PANI- [Cu2Cl4L3].2H2O nano-composites (50/50) undergoes three step weight loss in the temperature range 32-74, 74-280 and 280-5430 C for first, second and third with a mass loss of 5, 20 and 21% respectively. Thermograms reveals that the thermal stability of pure PANI was slightly improved by the incorporation of [Cu2Cl4L3].2H2O. Coating of polyaniline on [Cu2Cl4L3].2H2O was confirmed by SEM pictures. Key words: polyaniline-[Cu2Cl4L3].2H2O nanocomposites; inverted emulsion polymerization; conductivity.
- 61. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 40 Highly conductive organic thin films of PEDOT–PSS: silver nanocomposite treated with PEG as a promising thermo-electric material Apsar Pasha1 , Jagadeesha Angadi V2 1 Department of Physics, Ghousia College of Engineering, Ramanagaram, Karnataka 562159, India. 2 Department of Physics, P.C. Jabin Science College, Hubballi, 580031, India Abstract : In this work, we report a systematic study on charge transport and thermo- electric properties of poly (3,4-ethylenedioxythiophene):poly (styrene sulfonate):poly(ethylene glycol) (PEDOT–PSS:PEG) organic thin films doped with silver nanoparticles (AgNPs). Transparent and flexible hybrid nanocomposite films were prepared by a simple strategy via bar coating technique. The effect of PEG treatment and AgNPs nanoparticles distribution in PEDOT–PSS films was examined through various characterization techniques such as scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infra-red spectroscopy (FTIR), and thermo gravimetric analysis (TGA). The content of AgNPs in PEDOT– PSS: PEG was varied and optimized for 10 wt% as a percolation threshold. The addition of AgNPs and subsequent PEG treatment enhances the conductivity of PEDOT–PSS flms from 2 to 420.33 S/cm due to the removal of non-complexed PSS and synergetic interaction between PEDOT–PSS and AgNPs segments via PEG. These highly conductive nanocomposite flms were employed in an organic thermo- electric (TE) device to investigate the TE properties. These PEG treated PEDOT-PSS: AgNPs nanocomposite organic flms exhibit a enhanced power factor from 6 μW/mK2 to 85 μW/mK2 which is nearly 15 times higher than that of pure PEDOT-PSS thin flms. Due to ease of processing, flexibility, excellent charge transport, and thermo- electric properties, these PEG-treated PEDOT–PSS:AgNPs nanocomposite films can be potential thermo-electric materials for organic electronic devices operated at room temperature.
- 62. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 41 Electrochemical Sensor for Antioxidants in Portulaca oleracea Medicinal Plant Aishwarya M Mishrikoti1 , Faizun Khalil Naikwadi1 , Nilesh Chougala1 , Raghu S1 , Vidya Kamble2 , Shidaling Matteppanavar1* 1 Department of Physics, KLE Society’s Basavaprabhu Kore Arts, Science, and Commerce College Chikodi-591201, India 2 Department of PG Botany, KLE Society’s Basavaprabhu Kore Arts, Science, and Commerce College Chikodi-591201, India *Email:siddutifr@gmail.com Abstract Antioxidants play a classic role in deciding the human good health and act as defense against various cardiovascular diseases, cancers and other related disorders, due to the valuable dietary role. Currently, pharmaceutical scientific community interest in quantifying and screening the antioxidants from medicinal plants. For the benefit of good health, plant based antioxidants plays an important role, therefore screening for antioxidants properties of plant extracts has been one of the prime interests of scientists in this field. In this present work, Portulaca oleracea medicinal plant extract was used to study the antioxidants by electrochemical workstation through the cyclic voltammetry (CV) curves. Portulaca oleracea has been used as a traditional folk medicine in many other countries, acting as a febrifuge, antiseptic, vermifuge, and so forth. It exhibits a wide range of pharmacological effects, including antibacterial, antiulcerogenic, antiinflammatory, antioxidant, and wound-healing properties etc. Here we have collected the plant extract by two different methods soxhlet extraction and microwave assisted extraction method. We have estimated the redox behavior of Portulaca oleracea medicinal plant by different selected working electrodes (Glossy Carbon (GC), Copper Rod (Cu), Graphite Rod (Gr) and Stainless Steel rod (SS)). The prominent single redox peaks were noticed on Copper and Stainless Steel electrode than the Glossy carbon and Graphite electrodes, this may be due to the more polar nature of the electrodes. Overall, all the electrodes were detected the antioxidants through the CV curves, but Copper and Stainless Steel electrode shown a clear redox behavior.
- 63. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 42 Electrochemical Sensor for Obesity Reducing Acalypha indica MedicinalPlant Akshata Vasawade1$ , Rakesh Jambagi1$ , Chetan Hosatti1 , Aditya J Lengade1 , Sunil Patil2 , Shidaling Matteppanavar2* 1 Department of PG Botany, KLE Society’s Basavaprabhu Kore Arts, Science, and Commerce College Chikodi-591201, India 2 Department of Physics and Chemistry, KLE Society’s Basavaprabhu Kore Arts, Science, and Commerce College Chikodi-591201, India *Email:siddutifr@gmail.com $ -Equal contribution Obesity and overweight has become a major public health concern, and its incidence rising at an alarming rate. Obesity is one of the major types of metabolic syndrome, resulting in various types of problems such as hypertension, diabetes, dyslipidemia, and excess fat accumulation, cardiovascular complications, asthma, arthritis, non-alcoholic fatty liver, degenerative disease, etc. Medicinal plants which have been used in traditional medicinal science to treat various diseases have relatively minimum or no negative impacts and toxicity. Acalypha indica is one such plant which is boon for mankind having lot of disease curing potential such as antidiabetics, antiinflammatory, antiobesity, antimicrobial etc. There for we are designing electrochemical sensor for obesity reducing medicinal plants to detect the active compounds like, antioxidants present in the plant extract. Nowadays, electrochemical methodologies are acting emerging alternative tools for quantifying antioxidants in plant extract. These methodologies address numerous drawbacks of the conventional spectroscopic approach, such as the utilization of expensive and hazardous solvents, extensive sample pre-treatment requirements, long reaction times, low sensitivity, etc. The Acalypha indica plant extraction was done by soxhlet method. The electrochemical methodologies such as cyclic voltammetry (CV) technique used in this study and tested on selected working electrodes such as, Copper, Stainless Steel, Graphite and standard Glassy carbon electrodes. We obtained CV curves of all the bare electrodes and Acalypha indica plant extract. It is observed that all the electrodes signifies the presence of active compounds in the plant extract. More precisely, Copper and Stainless steel working electrodes shown a clear oxidation and reduction peaks, this may be due to the polar nature of the electrode.
- 64. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 43 Optical and thermal Properties of copper oxide nanoparticles embedded polyaniline nanocomposites Niranjana M1* , Ganesh D B2 , Ganesh N Yallappa3 , Manjunath R S1 , Nataraja G3 , Moulya S4 , 1 Department of Physics, Jain Institute of Technology, Davangere-577005. 2 Department of Mechanical Engineering, Jain Institute of Technology, Davangere-577005. 3 Department of Chemistry, Jain Institute of Technology, Davangere-577005. 4 Department of Information Science, Jain Institute of Technology, Davangere-577006. * Author for correspondence: nijusmurthy@gmail.com. ABSTRACT Polyaniline (PANI)/Camphorsulfonic acid (CSA)/ copper oxide (CuO) nanocomposite was synthesized by in-situ chemical oxidation method. PANI nanocomposites were characterized by ultra violet absorption spectroscopy (UV-Vis.). The optical studies show that the absorption exhibits a red shift in the visible region and optical band gap was found decreased from 2.55 eV to 2.61 eV with increasing the CuO concentration. The DTG results are shows enhanced thermal stability with increasing the CuO nano concentration.
- 65. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 44 Synthesis and characterization of Ni1-xGdxO thin films by spin coating technique Srinivasa N Va , Mahesh H Mb , Basavaraj Angadia,* a Department of physics, Bangalore University, Jnanabharathi Campus, Bengaluru 560056, Karnataka India b Department of Electronic Science, Bangalore University, Jnanabharathi Campus, Bengaluru 560056, Karnataka, India Abstract Pure and Gd-doped(Ni1-xGdxO) nanofilms are preparedusing the sol-gel spin coating technique withdifferent doping concentrations (x=0,0.02, and 0.04). Experimental evaluations were used to analyse the effect of the dopant onstructural and optical properties of the prepared films. The crystallinity and phase confirmation of face-centered cubic structure was done through XRD.The estimated crystallite size decreases with Gd doping concentration, assuring the appropriate inclusion of Gd dopant into the lattice. Raman spectroscopy was used to confirm the purity of the synthesised materials and the observed peak shift is caused by the increase in dopantconcentration. FTIR shows Ni-O related vibrational bands at 555 to 735 cm-1 , in addition to other absorbed vibrational modeslinked to various functional groups.According to the film's UV-visible spectra, the visible region has the highest transmittance of around average of 90%. Utilising tauc's plot relation, the optical band gap of the films was also evaluated. Due to the quantum confinement effect, a blue shift in the band gap value is seen.The findings indicate that prepared films show potential for applications in opto-electronic devices. Keywords : NiO, spin coating, X-ray diffraction, FTIR, Raman, UV-visible.
- 66. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 45 Spinel CoFe2O4-Activated carbon nanocomposites: Photocatalytic dye degradation and biomedical applications Manikandan Ayyar a,b,* and B. Catherin Meena c,* , a Department of Chemistry, Karpagam Academy of Higher Education, Coimbatore - 641021, Tamil Nadu, India b Centre for Material Chemistry, Karpagam Academy of Higher Education, Coimbatore - 641021, Tamil Nadu, India c PG and Research Department of Chemistry, Bishop Heber College, Tiruchirappalli-620017 *Corresponding Author: manikandan.frsc@gmail.com (Manikandan Ayyar); meenachemist@gmail.com (B. Catherin Meena); Abstract In this present work the cobalt ferrite (CoFe2O4) and activated carbon- CoFe2O4 nanocomposites (AC-CoFeO4) were synthesized by simple co-precipitation method used for degradation of Rhodamine-B dye. The antimicrobial study of the synthesized CoFe2O4 was also performed. The synthesized AC-CoFe2O4 nanocomposites were characterized by Ultraviolet spectroscopy (UV), Fourier Transform Infrared spectroscopy (FT-IR), X-ray diffraction (XRD) studies, Scanning Electron spectroscopy (FE-SEM) techniques. The XRD analysis showed that the synthesized CoFeO4 and AC-CoFeO4 had average crystallite size of ≈18 nm and 46 nm respectively. The FE-SEM showed that the CoFe2O4 nanoparticles have sphere like morphology and CoFe2O4 NPs were well decorated on activated carbon in order to provide high surface area. The prepared AC-CoFe2O4 nanocomposites have effectively used for the degradation of Rhodamine-B dye with high efficiency. Furthermore, the synthesized CoFe2O4 showed more effective antimicrobial activity against Gram-negative and Gram-Positive bacterial strains. In addition, the synthesized AC-CoFe2O4 nanocomposites can be used as the precursor materials for supercapacitor, sensors etc. Key Words: Cobalt Ferrite, Nanocomposite, Degradation, Antimicrobial Activity.
- 67. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 46 Effect of Al/Ga and Si on the magnetic properties of Nd2Fe17B0.05 Srilatha.Y1 ,Vagdevi. K2 , Revathi. N3 , Asharani. B. M4 1 Department of Physics, Dayananda Sagar Academy of Technology & Management, Bengaluru 560082 2 Department of Physics,Gokaraju Rangaraju Institute of Engineering & Technology,Hyderabad * Correspondence Author: dr.srilatha.y@gmail.com Keywords: Saturation Magnetization, Curie-Temperature, Anisotropy Abstract Due to its high coercivity and low Curie temperature, Nd2Fe14B is a well- known permanent magnet material. So off-stoichiometric 2:17 systems, Nd2Fe17MB0.05 compounds are chosen in order to further improve the magnetic properties. These are prepared by arc melting the highly pure initial elements. All of the compounds are synthesized in rhombohedral (Th2Zn17) structure with traces of - Fe, according to powder X-ray diffraction patterns. At a field of 12 kOe, the magnetization values exhibit a propensity to saturate. Honda plots were used to determine the saturation magnetization (MS) values. It was found that the MS values increased with the addition of M, which could be explained by the hybridization of the 3p(4p) band of Al, Si (Ga), and the 3d band of Fe. The inclusion of Si produced the highest MS. The Curie temperatures for these compounds were calculated and it was discovered that the addition of M caused a rise, with the addition of Ga causing the largest increase. This might be explained by TC's reliance on the density of states at EF. For the Nd2Fe17MB0.05 compounds, the existence of the (0 0 6) plane in the room-temperature XRD patterns of orientated samples suggests that the Easy Magnetization Direction (EMD) has changed from planar to uni-axial anisotropy, indicating increased anisotropy. The increase in anisotropy with the addition of M is also confirmed by the magnetization curves of the magnetically aligned samples.
- 68. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 47 Structural comparison of bulk Cobalt and Carbon Encapsulated Cobalt Nanopowder using 59Co NMR 1 Manjunatha M 1 Department of Physics, Shri Gavisiddeshwara Arts Science and Commerce College, Koppal, India* Corresponding Author:manjuna999@gmail.com Abstract: We have compared the Zero Field NMR (ZFNMR) signals of both bulk cobalt and Carbon Encapsulated Cobalt Nanopowder (CECN) at room temperature. It is well known that bulk cobalt exists in two phases Face Cantered Cube (FCC) and Hexagonal Close Packing (HCP) correspondingly two pairs of NMR signals are observed in bulk cobalt. Present ZFNMR observation reveals a single pair NMR signal in CECN which corresponds to only FCC phase. This has been further confirmed by powder XRD data in CECN for FCC phase. This work clearly confirms that the method of preparation has a crucial role in elucidating the phase of CECN. Keywords- 59Co IFNMR; Cobalt; CECN; RF enhancement;
- 69. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 48 Synthesis and study structural and magnetic properties of Ho0.2Y0.8FeO3 and HoFeO3 K.S.Kantharaj1 ,G.V. Jagadeesha Gowda2* ,N. Ramprasad3 ,Arjuna Gowda4 , JagadeeshaAngadi V5* 1 Department of Physics, Government College for Women Kolar-563101,Karnataka India 2 Department of Physics,BGS College of Engineering and Technology, Bengaluru:560086 Karnataka India 3 Department of Physics, Government College for Women Kolar-563101,Karnataka India 4 Department of Physics, Government First Grade College, Hoskote, Karnataka, India-562114 5 Department of Physics, P.C. Jabin Science College, Hubballi-580031, India *Corresponding authors: jagdeeshbub@gmail.com Abstract In this study, the HoFeO3 and Ho0.2Y0.8FeO3 nanoparticles were made using a solution combustion method. X-ray diffraction data support the orthorhombic structure of HoFeO3 nanoparticles as well as Ho0.2Y0.8FeO3 nanoparticles' major orthorhombic structure and minor hexagonal structure. After HoFeO3 is replaced by Y3+ , the crystallite size decreases. Rarely do peak position and intensity change when Y3+ concentration increases. The survey spectra reveal that the qualitative elemental compositions of the two samples are identical. SEM demonstrates that the materials' morphology is that of porous objects. We investigated the stretched vibration band using FTIR.Comparatively to nanoparticles with a HoFeO3 composition, the valence band components of the Ho0.2Y0.8FeO3 sample that correspond to the densities of Y3d, Fe3d, and Ho4f states are not appreciably changed by the addition of yttrium. The energies of the Fe2p3/2,1/2 X-ray photoelectron spectra of both samples are identical. Additionally, the Fe2p3/2 electron spectra had binding energies of 709.8 eV and 710.3 eV, respectively. Temperatures between 14 and 720 K were used to measure the Mössbauer spectra of YFeO3. Both materials' spectra are paramagnetic doublets with comparable characteristics at 720 K. Both samples' spectra are magnetically separated sextets at the lowest temperature (14 K).The δ(T) values of Ho0.2Y0.8FeO3 components, as well as D1, D2, S1, and S2 components, linearly rise and saturate at temperatures close to 100K. It is important to note that the D2 and S2 components of Ho0.2Y0.8FeO3 shift from 0.410 mm/s to 0.450 mm/s around 30K. The YFeO3 sextet likewise has an anomaly in the vicinity of 150K. This anomaly may potentially be related to an electronic structural rearrangement that results in a modification of the gradient of the electric field. As a result, the partial replacement of Ho3+ ions by Y3+ ions causes an increase in the Curie temperature and temperature of the spin reorientation transition.
- 70. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 49 Structural and Raman Studies on combustion synthesized LaDoped Ni0.4Zn0.6Fe2O4 Ferrites Anupama M K 1* 1 Department of Physics, JB Campus, Bangalore University, Bangalore, India 560 056 *Corresponding author: anurev123@gmail.com Abstract. Ni0.4Zn0.6Fe2-xLaxO4 (where x = 0.0 & 0.02) nanocrystalline ferrites were synthesized through solution combustion technique. As-prepared samples were characterized through X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) and Raman spectroscopy. XRD results confirm the ferrites crystallize in cubic structure with Fd-3m space group. With incorporation of La at Fe site results in the formation of impurities (La2O3). SEM micrographs show the uniform distribution of grains in spherical shape with strong formation of nanoparticles. FTIR spectra shows two prominent absorption bands at 390cm-1 and 520cm-1 both represents tetrahedral and octahedral stretching bonds respectively. Raman spectroscopy reveals the main broad peak at 750 cm-1 , related to the A1g mode, which confirm the formation of AB2O4 spinel cubic structure.
- 71. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 50 Role of Aluminum doping on properties of Zinc-Cadmiumnano ferrites Shivkumara , Medha Deshapandea , L.R.Naikb and R.B.Pujara a Department of Physics, P. C. Jabin College, Hubli, Karnataka, India b Department of Studies in Physics, Karnatak University, Dharwad, Karnataka, India ABSTRACT The Aluminum doped Zinc-Cadmiumnano ferrites with general formula ZnxCd1-x Al0.25 Fe1.75O4(0<x<0.5) were synthesized by sol-gel method using respective AR grade nitrates, sucrose and PVA in molar proportions. The prepared nanoferrites were characterized by XRD and SEM techniques. X-ray diffraction studies confirm the formation of single-phase, FCC structure. The lattice parameter is found to vary with Al concentration, obeying Vegard’s law. SEM micrographs indicate fine grains without segregation. The grain size varies from 16µm-25µm, depending on heat treatment.
- 72. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 51 Synthesis, structural and luminescence studies of Graphene Oxide. Vijay Kumar R1 , H. J. Amith Yadav1, a) , Sushma Katti1 , V.S. Veena1,2 , Pooja Raj B N1 and Chethan K S1 1 Department of Studies in Physics, Davangere University, Davangere 577007, India. 2 Department of Physics, Government First Grade College, Madhugiri, India .a) Corresponding author: amithyadavhj@gmail.com Abstract: The present study reveals a simple and efficient method for the synthesis of graphene oxide (GO). PXRD and FT-IR confirmed the analytical aspects of synthesized samples. The band gaps of prepared samples were estimated by UV–Vis analysis. PL quenching appears due to the interaction between the surface of the GO sheets. The photoluminescence analysis indicates the white component in display applications.
- 73. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 52 Co-doped Graphene Quantum dots for sensitive detection of dopaminethrough the mechanism of Photo electron transfer Prathul Nath1 , Manisha Chatterjee2 , Sachin Kadian3 , Anshu Kumar1 , Vishal Kumar1 , Partha Roy2 , Gaurav Manik3 &Soumitra Satapathi1 * 1 Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Haridwar, Uttarakhand 247667,India. 2 Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Haridwar, Uttarakhand 247667,India. 3 Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee,Haridwar, Uttarakhand 247667, India. *email: soumitra.satapathi@ph.iitr.ac.in Abstract Dopamine a widely recognized catecholamine, functions as a neurotransmitter in both the brain and nervous system and plays a significant role in various biological processes linked to emotions and perception. Furthermore, its direct correlation with the identification of several diseases such as schizophrenia, anorexia, and Parkinson's disease is well-established. In this research work, a novel approach was taken where graphene quantum dots co-doped with Boron and Sulphur (BS- GQDs) were synthesized and employed for sensitive detection of dopamine. These co-doped quantum dots were utilized as a probe for fluorescence sensing without the need for labeling. This approach proved to be remarkably effective in achieving high sensitivity and specificity in detecting dopamine (DA). As DA was introduced, the fluorescence emitted by the BS-GQDs experienced substantial suppression, spanning a broad range of DA concentrations (0-340 μM). Impressively, the detection limit reached an extraordinarily low value of 3.6 μM. The mechanism behind this fluorescence quenching phenomenon was found to be photoinduced electron transfer from BS-GQDs to dopamine-quinone. This quinone is produced as a result of dopamine's oxidation in alkaline conditions. The specificity of this fluorescent sensor toward dopamine (DA) was found to be exceptionally high, underscoring its selectivity. The implications of this study are significant, as it paves the way for the development of an affordable biosensor with potential applications in analyzing real samples. Keywords: graphene quantum dots, dopamine sensing, sensitivity and selectivity, analytical methods
- 74. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 53 Application of Cadmium Doped Cobalt Chromates for Enriched Sensing properties and Recovery Time in Humidity Sensors Swathi K. M1 , Chethan B2 , Shainaz Nadaf,1 Sofia Sultana Laxmeshwar,1 Soumya S. Kulkarni,1 Hemantkumar M. Savanur,1 *, Jagadeesha Angadi V3 * 1 Department of P. G. Studies in Chemistry, P. C. Jabin Science College, Hubballi-31, India 2 Deparment of Physics, Indian Institute of Science, Bengaluru-12, India 3 Department of Physics, P. C. Jabin Science College, Hubballi-31, India Corresponding Authors: hemantkumarsav@gmail.com, jagadeeshbub@gmail.com Abstract: Effective and efficient humidity sensing materials are crucial for humidity sensor applications. In this study, Cd2+ doped cobalt chromates were synthesized using urea and glucose as fuels by chemical synthesis method. To examine the structural and morphological changes in Co1-x Cd xCr2 O4 (where x = 0, 0.03, 0.06, 0.09, 0.12, and 0.15) using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and Energy dispersive X- ray spectroscopy (EDX). The XRD data demonstrate the formation of single phase crystal without an impurity peak emerged. Further, using William son Hall-method, the strain component and particle size component were calculated. The Cd doped Co1- x Cd xCr2 O4 was tested for its ability to detect humidity in the relative humidity range of 11 to 97%. The sample with the highest sensing response, Cd=0.05, had response and recovery times of 35.6 and 6.5 seconds, respectively, and a 93% sensing response. Therefore, based on our findings, the synthesised materials are appropriate for use in humidity sensor applications. Key words:Cobalt chromate, Humidity, Microstructure, Relative humidity.
- 75. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 54 Lutetium Doped Zinc Ferrites for humidity Sensor Application Sofia Sultana Laxmeshwar1 , Soumya S. Kulkarni1 , Shainaz Nadaf1 , Swathi K. M1 , Hemantkumar M. Savanur1 *, Jagadeesha Angadi V2 * 1 Department of P. G. Studies in Chemistry, P. C. Jabin Science College, Hubballi-31, India 2 Department of Physics, P. C. Jabin Science College, Hubballi-31, India Corresponding Authors: hemantkumarsav@gmail.com, jagadeeshbub@gmail.com Abstract It is crucial to have an effective and efficient humidity sensing material for humidity sensor applications. In this study, Lu3+ doped Zinc ferrites were prepared by chemical synthesis method by using urea and glucose as fuels for the first time. The prepared powder samples were subjected to several analyses, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and Energy dispersive X-ray spectroscopy (EDX), to examine the structural and morphological changes in ZnFe2-xLuxo4 (where x = 0, 0.1, 0.3, 0.5 and 0.7). The XRD results show that a single phase was formed without any impurity peak, as confirmed by XRD. The FTIR spectra exhibited two prominent bands at 532 cm-1 and 360 cm-1 , which are characteristic features of spinel ferrite. SEM micrographs revealed that the nanoparticles were almost spherical in shape, porous in nature, and fairly uniform in size. Further analysis of the nanoparticle with EDAX confirmed the elemental composition. The humidity sensing behavior of Lu doped ZnFe2O4 was tested in the relative humidity range of 11 to 97%. Among the samples, Lu=0.05 exhibited the highest sensing response of 93% with response and recovery times of 35.6 and 6.5 seconds, respectively. Hence, our results suggest that the synthesised samples are useful for humidity sensor applications. Key words: Zinc ferrite, Humidity, Microstructure, Relative humidity.
- 76. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 55 The use of SEM and X-ray diffraction peak profile analysis to determine thestructural and microstructure parameters of Lu3+ doped Zinc ferrite nanoparticles using Debye Scherrer, Williamson- Hall method Shainaz Nadaf,1 Sofia Sultana Laxmeshwar,1 Soumya S. Kulkarni,1 Swathi K. M, 1 Hemantkumar M. Savanur,1 *, Jagadeesha Angadi V3 * 1 Department of P. G. Studies in Chemistry, P. C. Jabin Science College, Hubballi-31, India 2 Department of Physics, P. C. Jabin Science College, Hubballi-31, India Corresponding Authors: hemantkumarsav@gmail.com, jagadeeshbub@gmail.com Abstract In this study, Lu3+ doped Zinc ferrites were prepared by chemical synthesis method by using urea and glucose as fuels for the first time. The prepared powder samples were subjected to several analyses, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and Energy dispersive X-ray spectroscopy (EDX), to examine the structural and morphological changes in ZnFe2-xLuxO4 (where x = 0, 0.1, 0.3, 0.5 and 0.7). The XRD results confirmed that a single phase was formed without any impurity peak. X- ray peak profile analysis had been used to estimate the physical parameters such as crystallite size and lattice strain by Debye-Scherrer (D-S) method and Williamson-Hall (W-H) plot, technique.Different precipitating agents influence strongly the structure, size distribution, morphology and stability ofthe nanoparticles and on the basis of these parameters an optimum sample had been selected. The crystallite size calculated from XRD and particle size calculated from SEM shows a narrow size distribution withaverages between nano meter range, for all the samples. The averagelattice constant, cell volume, found 8.36870–8.38558 Å, 586.10–589.65 Å3, -87.8–27.7 mV respectively.The FTIR spectra exhibited two prominent bands at 532 cm-1 and 360 cm-1 , which are characteristic features of spinel ferrite. SEM micrographs revealed that the nanoparticles were almost spherical in shape, porous in nature, and fairly uniform in size. Further analysis of the nanoparticle with EDAX confirmed the elemental composition. Key words: Zinc ferrite, Microstructure, spinel ferrite, porous.
- 77. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 56 Exploring Multi-Functionality: Polymer-Coated Rare Earth Oxides in Optoelectronics, Latent Fingerprinting, and Anti-Counterfeiting applications Kartika , Sunitha D Va * a Department of Physics, School of Applied Sciences, REVA University, Bengaluru-560064, Karnataka, India (*Corresponding Author: Dr.Sunitha D V; E-mail: sunitha.dv@reva.edu.in; Mob: +91-7760884884) Abstract Dysprosium oxide (Dy2O3) is an important rareearth material having wide range of applications in metal halide lamp, magneto-optical memory materials, glasses, neodymium iron boron permanent magnet additive etc.Low temperature solution combustion technique was employed to synthesize, Dy2O3by using urea as a fuel. The formation of pure cubic phase Dy2O3 sample was confirmed by using powder X-ray diffraction (PXRD). Further, the pure cubic structured Dy2O3 sample was coated with Polyvinylpyrrolidone (PVP) with different 1,3,5,7,9 wt%.Fourier- transform infrared spectroscopy (FTIR) confirms Dy-O bonds at 483 cm-1, signifying Dy2O3 presence, alongside characteristic PVP peaks at 1051 cm-1 , 1383 cm-1 , 1463 cm-1 , 1634 cm-1 , 2854 cm-1 , and 2923 cm-1 .Structural examination through scanning electron microscopy reveals controlled agglomeration after PVP coating. Transmission electron microscopy validates complete PVPcoating on Dy2O3 nanoparticles. Energy dispersive X-ray, UV–Visible and photoluminescence spectroscopy were used to study the composition and optical properties of uncoated and coated samples. The energy band gap estimated for uncoatedand coated are 4.43 and 5.21 eV by using Tauc and Wood plot method.The present studies suggested that the PVP coated Dy2O3 nanoparticles can be a promising material for WLEDs, Latent fingerprinting and Anti-counterfeiting applications.
- 78. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 57 Z-Scan Measurements of TMDs/Polymer Nanocomposites Krishma Anand1 , S.K. Tripathi1,* 1 Department of Physics, Centre of Advanced Study in Physics, Panjab University, Chandigarh- 160014, INDIA * Corresponding author: surya@pu.ac.in Abstract Nowadays, researchers are fascinated by non-linear optics (NLO) because of their numerous applications in optoelectronics. Several materials show NL optical behaviour in the presence of highly intense laser beams, but our main emphasis is on the transition metal dichalcogenides (TMDs) because of their unique optical, electrical and structural properties. We have studied the NLO properties of two- dimensional MoS2/PVA nanocomposite asMoS2 is a promising material due to its tuneable optical properties. In this work, we have synthesized the polymer nanocomposites with three different concentrations of MoS2 within the polymer matrix using in-situ method. Further, a thin film of MoS2/PVA nanocomposites has been deposited onto the glass substrate by the drop-casting method. XRD spectra reveal the structural properties of synthesized nanocomposites. The Linear emission spectra and absorption spectra of the film is studied using photoluminescence (PL) and UV-visible (UV-Vis) spectroscopy respectively. The band gap of the prepared thin film is calculated using the Tauc plot. The Z-scan method is employed to investigate its NLO parameters i.e.; NL absorption coefficient (β), NL refractive index (n2) and the third-order NLO susceptibility (χ(3) ). We have used a continuous-wave He-Ne laser with a wavelength of 633 nm in the Z-scan experiment. We have observed that MoS2/PVA nanocomposite thin film exhibits saturable absorption (SA) and self-defocusing behaviour. The β value is determined using open aperture trace and the n2 value is determined using closed aperture trace. Further, χ(3) is calculated using β and n2 values. We have observed that MoS2/PVA nanocomposites have fascinating linear and NLO properties which make it a suitable material for various applications such as telecommunication, optical switching, etc.
- 79. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 58 Foam Concrete: State-of-the-Art-Review Kiran. B, Department of Civil Engineering, Dayananda Sagar Collegeof Engineering, Shavige Malleshwara Hills, Kumaraswamy Layout, Bangalore-560078 profbkiran@gmail.com Abstract: Foam concrete, also known as cellular or lightweight concrete, is a versatile construction material that offers a wide range of applications due to its unique properties. This review article provides an overview of the key aspects of foamed concrete, including definitions and classifications, materials used, mix design, manufacturing process, properties, applications, and areas requiring further research. The article begins by defining foamed concrete and presenting various classifications based on density and strength. It discusses the materials commonly used in foamed concrete production, including cementitious binders, aggregates, water, and foaming agents. The mix design considerations for achieving desired properties and performance are also explored, including the optimization of foam content, water-cement ratio, and aggregate selection. The manufacturing process of foamed concrete is detailed, covering methods such as preformed foam addition and in-situ foaming. The properties of fresh foam concrete, including workability, density, and curing, are discussed, highlighting the influence of mix design and manufacturing techniques. The article then focuses on the properties of hardened foam concrete, including compressive strength, thermal characteristics, fire resilience, shrinkage properties, permeability, water absorption and walkability. The applications of foamed concrete in construction are examined, including its use in insulation, lightweight fill, road construction, and precast elements. Keywords: foaming agents, density, workability, thermal conductivity, walkability
- 80. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 59 THE STUDY OF OPTICAL PROPERTIES AND CONJUGATION OF QUERCETIN ON TERNARY NANOPARTICLES Swati Sharma1 , Shikshita Jain1 , S.K. Tripathi1, a) 1 Department of Physics, Center of Advanced Study in Physics, Panjab University, Chandigarh-160014, INDIA a) Corresponding author: surya@pu.ac.in ABSTRACT With a view to creating specialized biomedical applications, the utilization of nanoparticles for anticancer therapies has now emerged as a key research objective. Over the past few decades, I-III-VI has gained more interest than II-VI or IV-VI because these nanoparticles are less toxic, cadmium-free, and possess excellent optical properties. In this paper, we have reported the encapsulation of Quercetin on CIS nanoparticles. The conjugation has been done by using two different approaches. In the first approach, Quercetin is directly added to the CIS nanoparticles and in the second one, Quercetin is added along with the cross-linker like EDC and NHS, which act as a stabilizer, to the CIS nanoparticles. Fourier Transform Infrared (FTIR) Spectroscopy confirms the conjugation of quercetin with the CIS nanoparticles through the reaction between the carboxyl group of GSH-capped CIS nanoparticles and the hydroxyl group of quercetin. This paper includes the study of change in the optical properties of CIS nanoparticles after the Quercetin is conjugated on them with two different methods, with stabilizer, and without stabilizer. The optical properties include the UV- Visible (UV-Vis) spectroscopy and photoluminescence (PL) spectroscopy.There is quenching in the fluorescence intensity of the CIS nanoparticles after the drug Quercetin is conjugated with CIS nanoparticles in both the cases with and without cross-linkers. The outcomespoint to a successful chemical conjugation of quercetin to CIS nanoparticles, which opens the door to future uses in drug delivery.
- 81. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 60 Unveiling Contemporary Advances: Exploring Trends in Advanced Materials within Animation Vidisha Kurukshetra University wadhawanvidi@gmail.com Abstract The integration of advanced materials within the realm of animation has yielded remarkable transformations in the way visual narratives are crafted. This abstract explores the recent trends that have emerged at the confluence of animation and advanced materials, ushering in a new era of creative possibilities and enhanced visual experiences.In the contemporary landscape of animation, there has been a palpable shift towards leveraging cutting-edge materials to push the boundaries of artistic expression. This shift is driven by the increasing demand for immersive storytelling that captivates audiences and conveys intricate emotions. Advanced materials, such as photo-realistic textures, physically accurate lighting simulations, and intricate fabric renderings, have paved the way for animators to infuse their creations with a heightened sense of realism. The abstract also delves into the intersection of advanced materials and character animation. With the advent of materials that react dynamically to movements, characters come to life with unprecedented fluidity. Whether it's hair and fur that sways naturally or clothing that drapes convincingly, these advancements imbue characters with a tangible presence, fostering deeper audience connections. As technology continues to evolve, the synergies between animation and advanced materials are poised to chart a captivating course into the future of creative expression.
- 82. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 61 Electric and Thermal Properties of ZnO based Resistive Random Access Memory Device Nasreen Ansari1 , Archana Jain2 , and Vivek Kumar Jain1,* 1 Department of Physics, School of Basic and Applied Science, Career Point University Kota, Rajasthan, 325001, India 2 Swami Kesvanand Institute of Technology, Management and Gramothan, Jaipur, Rajasthan 302017, India Email: nasreen.ansari@cpur.edu.in, archanajain.rbt@gmail.com, * vivek.jain129@gmail.com Abstract Electric and Thermal Properties of Cu/ZnO/Pt based Resistive Random Access Memory Device had been studied. The Cu and Pt electrode are used at upper and lower side of ZnO Layer for fabrication of Resistive random access memory device. SET voltage is observed 0.91 volt while RESET voltage is 1.51 volt from I-V characteristics curve of this fabricated device. Temperature dependence of High and Low resistance state remains same from 300 K to 450 K from electrical resistivity measurement. Keywords: Resistive Random Access Memory, Electric Properties, Thermal Properties.
- 83. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 62 Li doped MgFe2O4 for Humidity Sensor Applications Jagadeesha Angadi V1 , Chathan Kumar B2 , SammedShantinath Hardi1 , 1 Department of Physics, K.L.E’s Society’sP.C.Jabin Science College, Hubli-580031, Karantaka, India 2 Department of physics, Indian institute of science (IISC), Bangalore, Karnataka, India *Corresponding Author: jagadeeshbub@gmail.com Abstract Recently, there has been increased interest in studying ferrite nanoparticles as potential humidity-sensing materials. Our research focuses on the humidity-sensing properties of MgFe2-yLiyO4 (with varying lithium-ion concentrations) synthesized through the solution combustion synthesis method. We analyzed the powder samples using powder X-ray diffraction (PXRD) and observed their humidity-sensing behavior. Our results showed that with an increase in lithium-ion concentration, the lattice parameter (8.373 to 8.375Å), unit cell volume (586-588 Å), and crystallite size (16-19 nm) all increased. The PXRD confirmed that the nanomaterial had a single Fd3m space group phase. We used this powder to create a humidity sensor, and our research showed that the addition of Li2+ increased the resistance, with the maximum enhancement observed at Li = 0.05, resulting in the highest average sensitivity. Overall, the synthesized materials show promise for humidity sensor applications with excellent stability and strong repeatability. Additionally, the thin-film humidity sensor we manufactured had response and recovery durations of 9 and 12 seconds, respectively. Our results suggest that prepared materials are useful for humidity sensor applications. Key words: Ferrites, Humidity, XRD, resistance
- 84. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 63 Confirmation of Superparamagnetic behaviour in Co0.5Ni0.5- xSrxFe2O4 nanoparticles by Mössbauer spectroscopy study , Mohd 4 S.P. Kubrin , 3 , Muhammad Imran 2 , K.M. Srinivasamurthy 1* V. Jagadeesha Angadi , S.O. 8 , Vinayak K Pattar 7 Hua Yang , 6 Huajing Gao , 5 , Shoyebmohamad F. Shaikh 5** Ubaidullah 10 Chander Prakash 9, Manjunatha 1 Deparment of Physics, P.C. Jabin Science College, Hubballi, 580031, Karnataka, India 2 Department of Physics, Bangalore University, Bengaluru, 560056, India 3 Saudi Basic Industries Corporation (SABIC) Technology and Innovation Center, Riyadh 11551, Saudi Arabia 4 Research Institute of Physics, Southern Federal University, Rostov-on-Don 344002, Russia 5 Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia 6 School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, Wanzhou, 404000, China. 7 School of Science, Lanzhou University of Technology, Lanzhou 730050, China. 8 Education Technology Unit, JNCASR, Bengaluru-560064, India 9 Department of Physics, B.M.S College, of Engineering, Bengaluru, 560019, Karnataka, India 10 Division of Research and Development, Lovely Professional University, Phagwara, Punjab, 144411, India *Corresponding author: jagadeeshbub@gmail.com Abstract Co0.5Ni0.5-xSrxFe2O4 powders with x values of 0.1, 0.2, 0.3, 0.4 and 0.5 were quickly produced using the Solution Combustion Synthesis (S.C.S.) method. The effects of strontium (Sr) concentrations on the structure, microstructure, and magnetic properties were investigated using a variety of characterization methods. The SC technique produced single-phase spinel ferrites with a space group of Fd-3m (JCPDS data: 01-074-5694) directly and did not require any additional heat treatment throughout the manufacturing process. The lattice parameter increased due to the addition of the Sr ions, but the redistribution of the various cations resulted in a drop in the fraction of the Fe3+ cations found in the (A) sites. The average crystallite size reduced from 23 to 19 nm. Scanning Electron Microscopy (S.E.M.) displays well- shaped spherical grains in the nanoscale region, but larger grains with agglomeration were discovered with Sr doping of spinel ferrite nanoparticles. Room temperature Mössbauer spectra have a structure typical for superparamagnetic nanoparticles. To
- 85. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 64 determine the distributions of iron ions at the A- and B- sites, the low-temperature measurements of Mössbauer spectra were performed at 15K, where the effect of relaxation on the structure of Mössbauer spectra is negotiable, the concentration of iron ions in A- and B-site were determined. It has been established that the substitution of Nickel ions for Strontium ions leads to the growth of Fe𝐴 3+ /Fe𝐵 3+ ratio from 0.75 to 0.89. In this study, we show the effect of Sr doping on the structure, morphology and magnetic properties Co-Ni ferrite nanoparticles, which are suitable for a wide variety of applications because of their adaptability.
- 86. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 65 Synthesis and studies on the effect of gamma irradiation on dielectric properties of Samarium doped Mn-Zn nano ferrites Jagadeesha Angadi V Department of Physics, P.C.Jabin Science College, Hubli-580031, INDIA Corresponding author: jagadeeshbub@gmail.com Abstract: Using the solution combustion process, a powder with the composition Mn0.5Zn0.5SmyFe2-yO4 (y=0.01 and 0.05) of nanometer dimensions was produced. The generated powderwas analyzed using the XRD method, and the results showed that a nanocrystalline face-centred cubic spinal structure had been formed. Using Scherrer's method, we got an estimate for the crystallite size of the entire sample. All characterizations were investigated by performing gamma irradiation experiments before and after the Co60 source. After gamma irradiation, the lattice parameter decreases with rising Sm3+ concentration and increases due to the conversion of ferric ions with a smaller radius into ferrous ions with a larger radius. This happens because ferric ions are changed into ferrous ions. The dielectric characteristics were investigated at room temperature over the frequency range of 100 Hz to 5 MHz while the void was present. As the frequency of the measurements increases, the dielectric constant fluctuation with the samples' frequency reduces, eventually attaining a stable value on the higher frequency side. According to the variation, the dispersion can be attributed to an interfacial polarisation of the Maxwell-winger type. This finding is consistent with Koop's phenomenological hypothesis. When the hopping frequency of localized charge carriers is almost equal to that of the externally applied electric field, a phenomenon known as resonance occurs. This allows for observing peaks in the variation of loss tangent with frequency. This may be due to the displacement of Fe3+ ions from the A-site to the B-site. The dielectric constant loss tangent for irradiated samples is more significant than that for unirradiated materials.
- 87. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 66 Facile Synthesis of Yttrium doped ZnO Nanoparticles and Its Optical Properties Priyanka. M1,2 , T Ranjethkumar Reddy 1 , G.Srinivas Reddy1* 1. Department of Physics, School of Engineering, Presidency University, Bangalore 560064, India 2. Material Research Center, Department of Physics, Presidency University, Bangalore 560064, India Abstract: We have synthesized Y-doped ZnO nanoparticles (Zn1-xYxO, x=0,0.03, 0.05) via the hydrothermal method. The structure, morphology and optical properties of the synthesized nanoparticles were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-visible spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR) and photo luminescence (PL) spectrometer. The XRD results showed that the nanoparticles had a hexagonal wurtzite structure with crystallite size in the range of 60-68 nm. FTIR spectra showed the presence of chemical bonding and functional groups. The PL intensity of the Y3+ doped ZnO particles increased compared to pure ZnO. The slight blue shift in PL spectra from 394.11 to 391.4nm clearly representing that Y3+ incorporated into the Zn-O lattice. The Y-doped ZnO nanoparticles synthesized through hydrothermal method can use for luminescence applications. Keywords Nanoparticles, Photoluminescence, Hydrothermal method.
- 88. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 67 Green synthesis of CuFe2O4 nanoparticles by honey mediated sol-gel auto-combustion method Prabhakar Ningayya Patila , Sarvesh Kumarb , V. M. Jalia * , B. Sahoob a Department of Physics, Gulbarga University, Kalaburagi, 585106, India b Materials Research Center, Indian Institute of Science, Bengaluru, 560012, India *Corresponding author E-mail ID: vmjali@gmail.com Abstract: Copper ferrite nanoparticles (CFN) were synthesized by honey mediated sol- gel auto-combustion method followed by annealing at 400 °C for 2 hrs. The structural, morphological, vibrational and optical properties were studied using XRD, SEM, FTIR, and UV-Vis.-DRS techniques, respectively. The XRD result confirmed the formation of spinel cubic phase with Fd3m-227 space group. Trace amount of α- Fe2O3 and CuO impurity phases were also detected. The estimated average crystallite size was 17nm and it decreased to 12nm after annealing at 400 °C. An agglomerated random morphology with irregular and unorganized structure was observed. The stretching and bending vibrational modes corresponding to Fe3+ /Cu2+ -O, N-O, H-O-H, O-H and CO2 bonds were identified from FTIR analysis. The optical band gap calculated using Kubelka Munk function gives direct band gap values, 1.61-1.65eV. The band gap was found to increase with decrease of particle size. Key words: copper ferrite, green synthesis, sol-gel auto-combustion.
- 89. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 68 Synthesis and Structural, Microstructural Electric and Humidity Sensing properties Gd3+ doped Co2+ Cr2 3+ O4 N. Ramprasad1 , G.V. Jagadeesha Gowda2 *, K.V. Arjuna Gowda3 , K.S.Kantharaj4 , Jagadeesha Angadi V5* 1 Department of Physics, Government College for women’s, Kolar, Karnataka, 563101, India 2 Department of Physics, BGS College of Engineering and Technology, Bengaluru-560086, India 3 Department of Physics, Government First Grade College, Hoskote, Karnataka, India-562114 4 Department of Physics, Government College for women’s, Kolar, Karnataka, 563101, India 5 Department of Physics, P.C. Jabin Science College, Hubballi-580031, India *Corresponding authors:jagdeeshbub@gmail.com Abstract: In this paper, we presented structural, Fourier infrared spectroscopic, and dielectric analysis of cobalt chromate (Co2+ Cr2 3+ O4) with 2 mole % of gadolinium (Gd3+ ) rare earth metal additions under humidity and non-humidity circumstances.The Gd3+ doped Co2+ Cr2 3+ O4 samples are prepared by solution combustion method and sintered for 2 hours at 650°C to get single phase. Doped and undoped samples were characterise X-ray powder diffraction (XRD) analysis provides the detailed formation of the Co2+ Cr2 3+ O4 phase and crystallinity. Furthermore, the average crystallite sizes are found in the range of 18 to 7 nm. The general nature of ferrite materials is revealed via FTIR analysis. The octahedral and tetrahedral stretching band in FTIR spectra were confirmed ferrite structure without impurity. Scanning electron microscopic images exhibits samples are highly porosity. We investigated the relevant conductivity of the samples, the reaction time of the capacitive sensor, and the humidity influence on the relative permittivity characteristics at a constant frequency range of f = 1 kHz. Key words: CoCr2O4; solution combustion method; humidity sensor applications; permittivity; electrical conductivity.
- 90. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 69 Iron-Infused Chitosan: A Promising Material for Effective Copper (II) Ion Removal and Environmental Restoration V.N. Meena Devi1 and M. Murugan2 1 Department of Physics, Noorul Islam Centre for Higher Education, Kumaracoil, Kanyakumari District, Tamilnadu, India. 2 Department of Biomedical Engineering, Noorul Islam Centre for Higher Education, Kumaracoil, Kanyakumari District, Tamilnadu, India. Email: vndevi@gmail.com Abstract India is the fourth-largest exporter of fish and fish products. The marine ecology and coastal areas are polluted as a result of the garbage accumulation of marine sources. Chitosan is derived from chitin, which is commonly found in the shells of crustaceans like shrimp and crabs. It has gained attention in various industries due to its unique properties, including biodegradability, non-toxicity, and biocompatibility. Chitosan has applications in areas such as food and pharmaceuticals, agriculture, wastewater treatment, and more. Iron-doped chitosan refers to chitosan that has been modified by incorporating iron ions into its structure. In the present study, crab shells were collected, processed, and chitin and thereby chitosan weresynthesized. Chitosan was prepared and iron oxide was doped with chitosan and iron oxide doped chitosan was prepared. FTIR, XRD, SEM, and EDS were used to characterize the prepared materials. The functional group of chitosan and the incorporation of iron in iron oxide doped chitosan are confirmed by the FTIR. Using the Debye-Scherrer equation and a particle size analyzer, the particle size of iron oxide doped chitosan was determined as 41.112 nm and 41.196 nm, respectively. The presence of iron peaks in the EDS spectrum confirms the successful incorporation of iron oxide nanoparticles into the chitosan matrix. The batch adsorption studies were carried out to determine the removal efficiency of chitosan and iron oxide doped chitosan to remove copper ions from aqueous solution. The adsorption parameters studied includes pH, initial metal ion concentration and dosage of the sorbent. Adsorption isotherms like Langmuir and Freundlich were analysed.
- 91. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 70 Effect of Concentration of Fullerene Doping on Light Switching Property of P3HT Thin Films P. ARUNA *1 , C. M. JOSEPH1 , S. M. NAVEEN1 , K. KESHAVAMURTHY1 1 Department of Applied Physics, Dayananda Sagar college of Engineering, Bangalore-560078 Abstract: Poly (3-hexylthiophene) (P3HT) is a semiconducting polymer that has been studied for use in light-activated memory devices. The switching property of P3HT thin films can be improved by doping with fullerenes. Fullerenes are molecules that have a cage- like structure and can act as charge carriers in P3HT. The effect of fullerene doping on the light switching property of P3HT thin films has been studied by a number of researchers. In general, it has been found that the light switching property of P3HT thin films improves with increasing fullerene concentration up to a critical value. Above this critical value, the light switching property decreases. This study investigated the effect of fullerene concentration on the light switching property of P3HT thin films. P3HT thin films were doped with different concentrations of C60 fullerene. The light switching property of the thin films was measured by Agilent high resistance meter. The films were exposed to light ON/OFF states with respect to time for studying the light switching property of the films. The results showed that the light switching property of P3HT thin films improved with increasing fullerene concentration up to a concentration of 10%. Above this concentration, the light switching property decreased. This is because the high concentration of fullerene molecules can interfere with the charge transport in the P3HT molecules. The results of this study showed that the light switching property of P3HT thin films is dependent on concentration of fullerene doping. Further research is needed to fully understand the effect of fullerene doping on the light switching property of P3HT thin films.
- 92. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 71 Enhancing Optoelectronic Performance of Mg-Doped ZnO Thin Films K. Mohammed Salman* ,Mohamed Zikriya, C.G. Renuka Department of Physics, Bangalore University, Bengaluru 560056, India renubub@gmail.com( Corresponding author) Abstract: Mg doped ZnO thin films have garnered considerable amount of interest owing to their tunable band gap features. The ability to influence the band gap by modifying the magnesium and zinc content provides exceptional flexibility comprising the ultraviolet to visible spectrum.This study includes the sol-gel synthesis of Mg doped ZnO thin films utilizing the spin-coating method. To explore structural, morphological, and optical properties, the synthesized Mg doped ZnO thin film samples were characterized using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), EDX (Energy Dispersive X-ray Analysis), and Ultraviolet Visible Spectroscopy (UV-Vis). The patterns obtained from XRD were used to calculate crystallite size using Scherrer's formula. SEM was used to investigate the morphology of grain size microstructure. According to the optical measurements the band gap of the thin films was found to be in the range of 5.4 eV, the sample displays a blue shift in absorption in UV bands, indicating that it has desired optical qualitieswhich makes these thin films extremely promising for optoelectronic applications. Keywords: Mg-doped ZnO, Spin Coating, Optoelectronic applications.
- 93. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 72 Synthesis, characterization, dielectric and ac conductivitybehavior ofCu-Srnanoferrites B. Shruthi1 , B. J. Madhu2* , H. Bhagyalakshmi1 1 Department of Chemistry, Dr. Ambedkar Institute of Technology, Bangalore -560 056, India. India. 2 Department of Physics, Government First Grade College, Ramanagara- 562159, India. *Corresponding Author: Email: bjmadhu@gmail.com Abstract: Cu0.5Sr0.5Fe2O4 ferrite nanoparticles were prepared using solution combustion method. Cu-Sr ferrite sample was characterized by X-ray diffraction analysis (XRD) analysis. Frequency dependence of the dielectric constant (ε′) and a.c. conductivity (σac) studies have been carried out at room temperature.The ε′ of Cu-Sr nanoferrite samplewas found to decrease with anincrease in the frequency. The σac of Cu-Sr nanoferrite sample was found to increase with anincrease in the frequency.The electrical conduction mechanism in the present Cu-Srferrite sample was in accordance with the electron hopping model.Above results suggests that the present Cu- Srnanoferritemay be recognized as a promising material for electromagnetic interference (EMI) shielding applications. Keywords:Ferrite nanoparticles; Dielectric behavior; Electrical conductivity
- 94. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 73 Atomically Dispersed Dual-atomic Co-Fe-N-C Electrocatalyst as Bifunctional Oxygen Electrocatalysis Mohd Ubaidullah 1 Collee of Science, Kid Soud University, Riyadh, Soudi Arebia Abstract The ability to fine-tune electrical structures by optimising centred metal atoms in atomic metal-nitrogen-moieties-decorated carbon materials has garnered a lot of attention. In this report, the synthesis of a variety of CoFe-NC materials with controllable atomic dispersion of the two metals has been achieved. We confirm the atomic dispersion of Co and Fe components in CoFe-NC materials and uncover evidence of a strong synergistic interaction between atomic Co and Fe in the context of the electron-donating and electron-withdrawing properties of Co and Fe, respectively. With an ORR half-wave potential (E1/2) of 0.85 V and a low OER overpotential of 467 mV at 10 mA/cm2 (Ej=10), electrochemical measurements showed that CoFe-NC can serve as an excellent bifunctional electrocatalyst for ORR and OER in alkaline medium. The superior ORR/OER activity of CoFe-NC material compared to a mixture of commercial Pt/C and RuO2elcetrocatalysts (ΔE=0.911 V) is further supported by the small potential window in terms of the potential gap (ΔE) between ORR E1/2 and OER Ej=10 (0.849 V). Keywords: Electrocatalysts, dual-atomic sites, oxygen reduction & oxygen evolution reaction
- 95. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 74 "Enhancing Educational Content: Exploring the Impact of Visual Effects (VFX) and Computer Animation Technology on Learning Vinod Raturi Department of Computer Science & Engineering, Maharishi School of Engineering & Technology Maharishi University of Information Technology Lucknow, India Email Id: vinodraturi7@gmail.com Rakesh Kumar Yadav Department of Computer Science & Engineering, Maharishi School of Engineering & Technology, Maharishi University of Information Technology, Lucknow, India Email Id: rkymuit@gmail.com Abstract: An effective approach for boosting the learning process and improving learning outcomes is the incorporation of Visual Effects (VFX) and Computer Animation Technology in instructional materials. This study explores the pedagogical effects of using VFX and animation in contemporary learning, with the goal of illuminating how they affect students' comprehension, engagement, and recall of challenging ideas. This study aims to determine the possible advantages of various learning styles and topic areas by investigating the numerous ways that multisensory learning can be aided through visual, aural, and interactive features. This study evaluates the usefulness of VFX-enhanced materials as well as potential adoption hurdles and ethical issues through controlled experiments, surveys, and content analysis. KEYWORDS:Enhancing educational content, Visual Effects (VFX), Computer Animation Technology, Pedagogical effects, Visual learning, Boosting learning process, Modern learning
- 96. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 75 Comparative Study of the Electrochemical Behavior of Electrodeposited Synthesis of Al and Cu-Doped MgO Flexible Electrodes for Supercapacitors M.T Mhetre, B.J. Lokhande* Abstract: Aluminium (Al) and Copper (Cu) doped Magnesium Oxide thin film electrodes for supercapacitor applications have been developed and easily synthesized using an electrodeposited process in ambient settings. Al-doped MgO and Cu-doped MgO were each deposited in 20 ml amounts for a 20-minute period on flexible stainless steel (SS) substrates. following the annealing of the produced samples at 450 0 C for one hour. Following the manufactured samples, the doped materials are confirmed by the X-ray diffraction data. Electrochemical analysis was used to examine the ready samples. The maximum specific capacitance (SC) measured using cyclic voltammetry in 1 M aqueous KOH with Al-doped MgO is 24.16 Fg-1 (SC) at 5 mVS-1 scan rate. GCD investigations demonstrate distinct behavior from that of conventional capacitors. For various applied currents, it was discovered that the charging and discharging times were essentially the same. The greatest specific capacitance (SC) measured was 1.72 Fg-1, equal to the value obtained via CV.
- 97. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 76 Effect of C and T slots on Compact Rectangular Monopole Antennas for Wireless Applications Naveena S M, Aruna P, Joseph C M Dept of Applied Physics, Dayananda Sagar College of Engineering, Bangalore, India naveen-physics@dayanandasagar.edu Abstract: Monopole antennas for wireless applications with ultra-wideband are presented in this paper. The design and performance of the C and T slots on the antenna performance are discussed. The proposed antenna is mounted on a compact FR-4 substrate having the relative permittivity εr = 4.4. The results reveal that the antenna covers the frequency range of 3.05 to 13.8 GHz with a reflection coefficient reduced to -25 dB. The details of the simulated results for reflection coefficient are presented, showing a good agreement between them. The performances of good impedance matching are achieved within the operating band. Simulations are performed using IE3D simulation software. The proposed antennas can be used for UWB applications and other radio communication services systems such as wireless communications, position location and tracking.
- 98. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 77 An investigation of the magnetic properties of REMnO3manganites at low temperatures Nagaraja B Sa,1 1 Nitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Physics, Nitte, Karnataka, 574110, India a Corresponding author: nagarajbs2012@gmail.com Abstract The present paper studies on structural and magnetic properties of REMnO3 (RE (Rare Earth elements) = Dy, Gd, Eu and Sm)manganites prepared by conventional solid-state reaction method. The prepared samples show orthorhombic crystal structure with Pbnm space group from the X-ray diffraction (XRD) results. The XRD results analysed using Rietveld refinement method and results are observed unit cell volume is increased with increase the RE element ionic radius. Scanning electron microscopy (SEM) results shows the decrease with increasing ionic radii of the rare earth ion. Magnetization studies indicate that the samples display a transition in the low temperature region. Magnetization data also reveals that antiferromagnetic behaviour is observed for all samples. There is a transition in the magnetization data for all samples that is evident at low temperatures. All samples show antiferromagnetic behavior when magnetized in the low temperature region. Keywords: Manganites; Solid state reaction; Rietveld refinement; magnetic properties.
- 99. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 78 Structural, Morphological, and Electrochemical Study of the Electrodeposited Cadmium Oxide Thin Films for Supercapacitor Application Prathamesh Dahivade, Balkrishna Lokhande* Lab of electrochemical studies, School of Physical Sciences P. A. H. Solapur University Solapur 413255, M.S., India Abstract: The rise in requests of energy storage devices is important to the construction of energy storage systems with high efficiency at lower prices. Supercapacitors serve as a hopeful candidate for this purpose. Cd(No3)24H2O is an n-type semiconductor with a band gap in-between 2.4eV - 3.1eV. Its potential for application in electrochemical energy storage devices especially as an electrode material for supercapacitors is limited. In this work, we deposited the CdO by electrochemical deposition technique. The film was deposited from an aqueous solution of Cd(No3)24H2O and prepared sample annealed at 300o C. Electrochemical properties of the Synthesized electrode are investigated with a three-electrode system in 1M aqueous KOH as the electrolyte. X-ray diffraction pattern is utilized to find the nature of the material and SEM is used to find the morphology of the given electrode. Electrochemical characterization proved the CdO nanoparticle provided an excellent value of specific capacitance of 735 Fg-1 .
- 100. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 79 Characterization Studies on Adipic Acid Doped Ninhydrin Crystal Grown by Solvent Evaporation Method at Room Temperature. N. Y. Sugirtha Suni Department of Physics, Noorul Islam Centre for Higher Education, Kumaracoil, Tamilnadu, India. sugirthasuni@gmail.com Abstract Adipic acid doped Ninhydrin crystals were successfully grown within 38 days using solvent evaporation method at room temperature. The grown crystal was colourless with an average size 7.5mm×2.5mm×1.75mm. The grown crystals were characterized by PXRD analysis, FTIR analysis and UV-Visible spectral analysis The functional groups present in the crystal was confirmed by FTIR spectral analysis. Purity and crystallinity were confirmed by PXRD analysis. Transparency of the crystal was confirmed by UV spectral analysis. Keywords: Adipic acid, Ninhydrin, PXRD, FTIR, UV-Visible.
- 101. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 80 Structural, Vibrational, Thermophysical, and electronic properties of full Heusler compound (L10 FeNi2Ge). B. P. Thacker*, Mitesh B Solanki, R.N. Kharatmol, Yogesh D Kale and Trilok Akhani * Department of Physics, Parul University, P. O. Limda, Ta. Waghodia, Vadodara, 391 760, Gujarat, India Corresponding author:- thackerbhavik31@gmail.com Abstract: Using plane-wave pseudopotential density functional theory (DFT), a comprehensive first-principles computation of the structural, vibrational, and electronic characteristics of the L10 FeNi2Ge alloy is examined. For the present computations, PAW-type pseudopotentials with Perdew-Burke-Ernzerhof (PBE) exchange correlation are used. Our calculated equilibrium lattice constants agree closely with the reported results. Phonon dispersions and phonon density of states of L10 FeNi2Geexhibit dynamically stable phases along the high symmetry directions of the Brillouin zone. Further, the electronic band structure along with the total and projected electronic density of states, electronic charge density, and Fermi surfaces of L10 FeNi2Geare also studied. Various thermophysical properties, namely Room temperature thermal equation of states, Coefficient of thermal expansion at different temperatures, isothermal bulk modulus at different temperatures, Specific heats as a function of temperature, Temperature dependence of Debye temperature, Grüneisen parameter as a function of temperature are investigated using methodology as implemented in quasi-harmonic Debye model. Conclusions based on the phonon dispersion curves, phonon density of states, electronic band structure along with the total and projected electronic density of states, electronic charge density, Fermi surface, and thermophysical properties are outlined. Keywords: L10 FeNi2Ge, full Heusler compounds, DFT, Phonon dispersion curve, Phonon density of states, electronic band structure, electronic charge density, Fermi Surface, Thermophysical properties.
- 102. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 81 An experimental analysis of Mn, Cr doped CdTe by using elemental specific method for spintronics application. Pujarani Parida1,# , Jayashree Patra1 , V.R. Singh2 , V.K. Verma1,# 1 Department of Physics, School of Advanced Sciences, VIT-AP University, Amaravati, 522237, India 2 Department of Physics, Central University of South Bihar, Gaya 824236, India ABSTRACT Semiconductor materials are important because of its capacity of storing data, computing technologies. By combining semiconductor material and magnetic material, a new field emerges named asspintronics, that involves both the control of electron charge and spin state which is beyond the traditional electronics. Diluted magnetic semiconductor obtained by introducing appropriate transition metal or rare-earth dopants into a semiconductor because of which there will be spin- polarized electrons. These are semiconducting alloys in which transition metals (Mn, Cr, Co, Ni, etc.) are doped with host semiconductori.e II-VI, III-V or Oxide based semiconductor compounds.The property observed in pure semiconductor i.e electrical, optical,magnetic are affected by introducing transition metals into host semiconductor.We mainly focused on double doping of transition metals into Cadmium Telluride semiconductor compounds for achieving ferromagnetic behavior.Mn doped CdTe explains unique magnetic & optical properties like Faraday rotation, spin-glass behavior, development of magnetic polarons, etc.X-ray Absorption Spectroscopy (XAS) & X-ray Magnetic Circular Dichroism(XMCD) are taken to be best tool to study electronic & magnetic properties of (Mn, Cr)-doped CdTe as it has unique properties like element specific, spin orientation.Mn-CdTe show paramagnetic/antiferromagnetic phase. Cr-doping develops ferromagnetic or superparamagnetic clusters whichcarry more Cr ions which are surrounded by large number ofMn ions. The behavior of magnetization is similar to that of Cr ions. Key words :Dilute magnetic semiconductor,CdTe, Magnetism, XAS, XMCD # Email id: pujarani.23phd7026@vitap.ac.in, virendra.verma@vitap.ac.in
- 103. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 82 Study of multiferroic properties of Barium titanate/ Nickel ferritebased composites Jayashree Patra1,# , Pujarani Parida1 , V.R. Singh2 , V.K. Verma1,# 1 Department of Physics, School of Advanced Sciences, VIT-AP University, Amaravati, 522237, India 2 Department of Physics, Central University of South Bihar, Gaya 824236, India ABSTRACT Recently, spinel ferrite(AB2O4) has gained a lot of attention, exhibits excellent magnetic properties including high magnetic permeability and low magnetic losses, making them useful in different applications like in electronics devices,telecommunication, magnetic sensors, transformer etc. due to its high curie temperature, low cost, chemical stability, sufficiently low dielectric loss over a wide range of frequency. Based on its crystal structure spinel ferrites are classified into three types such as normal spinel ferrite, inverse spinel ferrite and complex spinel ferrite. Nickel ferrites have an inverse spinel structure, in which trivalent ion Fe3+ located at the tetrahedral A sites whereas the divalent nickel ions (Ni2+ ) located at the octahedral B sites, Fe3+ ions easily distributed in between A and B sites. This arrangement shows unique magnetic behavior, which useful in various applications like in catalyst, magnetic sensor, microwave devices, also use in biomedical applications. Single-phase multiferroic materials are limited and exhibit weak magnetoelectric coupling (1– 20mV/cm-Oe) at room temperature. On the other hand, composite material made-up of two different ferroic phases e.g., ferroelectric and ferromagnetic materials show strong magnetoelectric coupling.In this work, we proposed a new model to overcome the weak magnetoelectric (ME) coupling effect. Here, we have developed two phase artificial ME composite by alternate planner multilayers of ferroelectric (BaTiO3) and ferromagnetic (NiFe2O4) layers which shows strong magnetoelectric coupling. The ME coupling increases as the interface to volume ratio of the multilayers increases. The enhancement of the ME coupling may be suitable for new device applications and can be controlled both electrically and magnetically. Keywords:-Multiferroics; spinel ferrites; composite materials; magnetoelectriccoupling.
- 104. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 83 Green synthesis of Gold Nanoparticles using aqueous extract of Tabernaemontana heyneana leaves. Dr.Gururaja K1 Dr. M David* 1 Department of Zoology, A V Kamalamma College for Women, Davanagere1 , Karnataka-577002, India. *Corresponding Author: Dr. M David, Professor, Department of Zoology, Karnatak University, Dharwad, Karnataka – 580003, India. E-mail: seeguruk@gmail.com Abstract The study investigates the green synthesis and characterization of gold nanoparticles (AuNPs) using aqueous extracts from Tabernaemontana heyneana leaves. Phytochemical screening revealed alkaloids, flavonoids, glycosides, and phenolic compounds in the extract act as potent bio-reductive agents and minimizing the need for harmful chemicals. The characteristic absorption peak of AuNPs was observed at 546 nmconfirmed the formation of AuNPs by UV-Vis spectrophotometry. The nanoparticles were then characterized by FT-IR, TGA, and AFM analyses. FT-IR spectroscopy showed that the phytoconstituents in the leaf extract had capped the AuNPs, preventing them from aggregating.TGA analysis showed that the AuNPs were thermally stable and had an organic content of 21.69%. AFM imaging revealed that the AuNPs were spherical in shape and had a size range of 3-30 nm.The results of this study demonstrate that the aqueous extract of Tabernaemontana heyneana leaves can be used to synthesize AuNPs in a green and sustainable method in nanotechnology. Keywords:Tabernaemontana heyneana, Gold Nanoparticles, AFM, FTIR, TGA, Green synthesis
- 105. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 84 Oxalate Precursor synthesis of La 1-x Gd x FeO 3 nanoperovskites: effect of Gd 3+dopant on structural and magnetic properties Jojan R. R.1 ,Godase S. B. 2 , Jadhav C.N. 3 and Lohar K.S. 1 * 1 Department of Chemistry, Adarsh College Omerga, Osmanabad( M.S.)India 413606 2 Department of Chemistry, Shrikrishna Mahavidhyalya, Gunjoti, Osmanabad, (MS), India-413606 3Department of Chemistry, B. S. S. Arts Science and Commerce CollegeMakni, Osmanabad (M.S.)India 413604 Abstract La 1-x Gd x FeO 3 pervoskites with composition x = 0.00 to x=0.10 in the step of 0.025 were synthesized by using Oxalate Precursor method and their thermal, structural and magnetic properties were investigated. The synthesized precursors analysed by differential scanning calorimetry and thermo gravimetric analysis (DSC/TGA) shows phase transition takes place in Gd 3+ ion doped LaFeO 3 perovskites in the range around 750 o C. The synthesized perovoskites were characterized by X-ray diffraction (XRD) and the crystal structure and microstructure were refined by applying a Full Prof refinement. The XRD patterns confirmed the orthorhombic Gd 3+ doped LaFeO 3 perovskite with space group Pbnm without any impurity phase. The Debye – Scherer formula and Williamson Hall plots were used to calculate the crystallite size of the synthesized samples. The I.R. spectra of samples were analysed to know the presence of possible functional groups and vibrating band position respectively. The energy dispersive analysis (EDS) confirmed excepted stoichiometric elemental composition of samples. Scanning electron microscopy (SEM) analysis indicates the formation of crystalline nano nature and the high- resolution transmission electron microscopy (HRTEM) of the sample shows polycrystalline nature. The vibrating sample magnetometer (VSM) indicates ferromagnetic behaviour. Keywords: Nanomaterial;Gdr 3+ doped perovskites; Orthorhombic; Spectral and magnetic studies; Ferromagnetic.
- 106. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 85 An Overview of Thin Film Deposition Techniques S. Udachan1* , S.B. Kolvekar1** , N. H. Ayachit1 , L.A. Udachan2 , S. Siddanna2 , S. S. Kolkundi3 1 School of Advanced Sciences, KLE Technological University, Hubballi-580031, India 2 S. S. Tegnoor Degree College, Kalaburagi-585105, India 3 Government First Grade College, Shahapur-585223, Yadgir, India * Corresponding author, ** Corresponding author. E-mail addresses: shivaudachan8@gmail.com, sangeeta_k@kletech.ac.in Abstract Surface morphology of the material can affect the efficiency and behavior of the material when in service. Modifying and tuning these surface properties to suit the specific demand for better performance is feasible and has been vastly employed in a different aspect of life. This can be achieved by coating the surface via deposition of the thin film. The selection process for the majority of the materials may be founded on the texture, aesthetic and color, but functional engineered materials cannot only depend on the physical appearance and bulk properties but also on the surface characteristics composition especially in the area of applications where surface contact behaviour is of paramount priority. Functional engineered components must be able to satisfactorily perform desired purposes efficiently and successfully. Alteration of the surfaces can be manifested using different techniques of surface engineering of materials. The surfaces of metallic materials are made up of a matrix of individual discrete grains with variation in sizes and bond strength. Surface engineered materials have augmented and improved performance, added functionality, reduced cost, improved material usage efficiency and provided performance which would not be possible with bulk materials. Key words: Thin film, deposition, surface morphology, grains, materials.
- 107. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 86 Thermo dynamical parameters of some Ferroelectric liquid crystals Dilatometric study K.Nagi Reddy1 Syed Habeebulla Hassain2 , Manu3 , K Fakruddin4 1-K.L.E.Society’s SSMS college,Athani,, 2 &3-M.E.S. College of Arts, Commerce and Science, Bengaluru, 4-Ghousia College of engineering, Ramanagara Corresponding Author : K. Nagi Reddy Email: kle.nagireddy@gmail.com ABSTRACT: In the present studies homologous series of hydroxyl phenylamino methyl diphenyloxy benzoate series of ferroelectric liquid crystals are used. In liquid crystalline phase the density of these compounds are measured by using dilatometer which consists of specially designed pyknometer. Density data was utilized to extract the thermal expansion coefficient of the above compound. At crystalline phase transformation the thermal expansion coefficient maxima values are recorded . Density and thermal expansion data is used to evaluate number of thermodynamic parameters. The variation of these parameters at phase transformation are noticed and results of discussed with available data. Key words: Ferroelectric liquid crystals, density, thermal expansion coefficient, phase transformation and thermodynamic parameters.
- 108. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 87 Structural, Vibrational, Electronic, and Thermophysical properties of Al-Mgalloy Pradhyumansinh Raj, Vaishali Nathwani, Bhavik Thacker Parul University, P. O. Limda, Ta. Waghodia, Vadodara, 391 760, Gujarat, India Corresponding author: - parthraj796@gmail.com Abstract: A comprehensive first-principles calculation of the structural, vibrational, electronic, andthermophysical properties of B2 AlMg alloy is studied using plane- wave pseudopotential density functional theory (DFT). PAW-type pseudopotential with the exchange-correlation of Perdew-Burke-Ernzerhof (PBE) is used for the present computations. Our computed equilibrium lattice constants are in good agreement with the reported results. Phonon dispersionsand phonon density of states of the B2 AlMg phase predict a dynamically stable phase along the high symmetry directions of the Brillouin zone. Further, the electronic band structure along with the total and projectedelectronic density of states, electronic charge density, and Fermi surfaces of B2 phases of AlMg alloy isalso studied. thermophysical properties namely are investigated using methodology as implemented in the quasi-harmonic Debye model. Conclusions based on the phonon dispersion curves, phonon density of states, electronic band structure along with the total and projected electronic density of states, electronic charge density, Fermi surface, and thermophysical properties are outlined. Keywords: AlMg, DFT, lattice parameter Phonon dispersion curve, Phonon density of states, electronic band structure, electronic charge density, Fermi Surface, thermophysical properties.
- 109. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 88 Iron-Infused Chitosan: A Promising Material for Effective Copper (II) Ion Removal and Environmental Restoration V.N. Meena Devi1 and M. Murugan2 1 Department of Physics, Noorul Islam Centre for Higher Education, Kumaracoil, Kanyakumari District, Tamilnadu, India. 2 Department of Biomedical Engineering, Noorul Islam Centre for Higher Education, Kumaracoil, Kanyakumari District, Tamilnadu, India. Email: vndevi@gmail.com India is the fourth-largest exporter of fish and fish products. The marine ecology and coastal areas are polluted as a result of the garbage accumulation of marine sources. Chitosan is derived from chitin, which is commonly found in the shells of crustaceans like shrimp and crabs. It has gained attention in various industries due to its unique properties, including biodegradability, non-toxicity, and biocompatibility. Chitosan has applications in areas such as food and pharmaceuticals, agriculture, wastewater treatment, and more. Iron-doped chitosan refers to chitosan that has been modified by incorporating iron ions into its structure. In the present study, crab shells were collected, processed, and chitin and thereby chitosan weresynthesized. Chitosan was prepared and iron oxide was doped with chitosan and iron oxide doped chitosan was prepared. FTIR, XRD, SEM, and EDS were used to characterize the prepared materials. The functional group of chitosan and the incorporation of iron in iron oxide doped chitosan are confirmed by the FTIR. Using the Debye-Scherrer equation and a particle size analyzer, the particle size of iron oxide doped chitosan was determined as 41.112 nm and 41.196 nm, respectively. The presence of iron peaks in the EDS spectrum confirms the successful incorporation of iron oxide nanoparticles into the chitosan matrix. The batch adsorption studies were carried out to determine the removal efficiency of chitosan and iron oxide doped chitosan to remove copper ions from aqueous solution. The adsorption parameters studied includes pH, initial metal ion concentration and dosage of the sorbent. Adsorption isotherms like Langmuir and Freundlich were analysed.
- 110. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 89 Dielectric Properties of Nanostructured YbFeO3, Yb3Fe5O12and YbMn1-xFexO3 Zhengyou Li*1 , Kamaludin Abdulvakhidov1 , Abeer Alshoekh1 , Bashir Abdulvakhidov2 , Marina Sirota1 , Ivan Dmitrenko1 1. Southern Federal University, Sladkova 178/24, Rostov-on-Don, 344090, Russia 2. Dagestan State University, Gadgieva 43-a, Makhachkala, 367000, Russia *Corresponding author. chl@sfedu.ru Abstract This paper presents a comprehensive study of the dielectric properties of YbFeO3, Yb3Fe5O12, and YbMn1-xFexO3compositions,with a focus on their temperature- frequency dependencies. The investigation covers the hexagonal phase, the coexisting hexagonal and orthorhombic phases, and the orthorhombic phase of YbMn1-xFexO3, and also provides valuable insights into the complex interplay between mechanical activation pressure and dielectric properties of Yb3Fe5O12 and YbFeO3 compositions, contributing to a deeper understanding of their behavior and phase transitions.
- 111. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 90 Biogenesis One-potSynthesis of ZnO nano tie-bows and its Antibacterial Activity. Manju Manuel 1 1 Department of Chemistry,CHRIST (Deemed to be University), Bangalore. Abstract Biogenesis synthesis of nanoparticles is superior to chemical and physical methods as it is environment-friendly and economical.This study consists of a reliable process for synthesizing ZnO NPs by green method.Bioreductionexploits the reduction potential of various biochemicals in natural and renewable biomaterials such as microbes and plant extract to reduce metal ions into zero valence metal nanoparticles. Here, garlic(Allium sativum) extract is utilized as an efficient chelating and capping agent for synthesizing ZnO NPs from Zinc acetate dihydrate( Zn(CH3COO)2·2H2O) salt. Numerous phytochemicalsare found in A. sativum, including allicin, diallyl disulfide (DADS), vinyldithiins, ajoene (E- and Z-ajoene), diallyl trisulfide (DATS), and the micronutrient selenium (Se).Allicin contains thiol (sulfhydryl) groups and has the ability to donate electrons to actas reducing agents. The plant ingredients, structure, morphology, and chemical composition of ZnO nanoparticles were investigated using several characterization techniques, namely XRD, FE-SEM, EDX, Zeta potential, DLS, FT-IR analysis, and UV–vis spectroscopy. The UV–Vis and FTIR analysis ofgarlic extract verified that this is a promising candidate for biosynthesizing ZnO NPs. The XRD spectrum, DLS, and SEM images confirmed the crystallinity and the peculiar tie-bow shape of the ZnO NPs. The band gap of the ZnO was measured to be around 3.3 eV. Zeta potentialanalysis showed that the biosynthesized ZnO NPs possess good stability. The unique ZnO nano tie-bow particles showed strong antibacterial activity toward Escherichia and Klebsiella pneumonia without UV illumination. The choice of bacteria was made according to the Global priority pathogen listing of the World Health Organization (WHO). The Zone of Inhibition ranged from 13.00 ±0.50 to 19±50mm on E.coli and 13.00±0.30 to 15.00±0.30mm on K. pneumonia. The use of naturally occurring plant components for the production of bactericidal ZnO Npshas been promoted as a potential environmentally acceptable alternative to conventional processes. Keywords: Biogenesis, antimicrobial, bioreduction, nano tie-bows, bactericide
- 112. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 91 Physical and UpconversionProperties of Ho3+ Doped Tungsten Tellurite Glass Samples Anil Ashutosha* ,Ghizal F. Ansaria *Department of Physics, Sindri College, Sindri, BBMKU, Dhanbad a Department of Physics, Madhyanchal Professional University, Bhopal, India,462044 *Corresponding author: anilashutosh@gmail.com Abstract The current work focuses on up conversion emissions from TeO2-WO3 glass that has been holmium activated. The glasses were made using the well-known melt quenching procedure, and X-ray diffraction analysis was used to determine their identity. On the basis of differential Scanning caslorimetry(DSC), the properties of thermal stability and glass transition were described. The explanation for the produced glasses' luminescence behaviour was based on the optical absorption and emission spectra that were captured at various excitation levels. After activation with blue and near-infrared wavelength photons, respectively, intense green and yellowish-green emissions were found. With the use of a power dependency analysis, the upconversion procedure and colour tuning emission characteristics were thoroughly addressed. Key words: Tellurite glass, FrequncyUpcoversion, differential Scanning caslorimetry.
- 113. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 92 Bio-waste as an Electrode Material for Energy Storage Devices: A Sustainable Approach to Green Energy Yamini Guptaa , Poonam Siwatchb , Kriti Sharmaa∗, S.K. Tripathic∗ a Department of Physics, Goswami Ganesh Dutta Sanatan Dharma College, Sector 32-C, Chandigarh, 160014, India b Department of Physics, Arya Kanya Mahavidyalaya, Shahabad (M), Haryana, 136135, India c Department of Physics, Centre for Advanced Study in Physics, Panjab University, Chandigarh, 160014, India * Corresponding author: Kriti Sharma kriti.sharma@ggdsd.ac.in, S.K. Tripathi surya@pu.ac.in Abstract: Global research interest in renewable energy sources has increased dramatically during the previous few decades. Wind and solar technologies have been thoroughly researched and investigated.However, due to the high cost of these technologies and the difficulty of offering service during the off-season, they have not been widely used.Energy storage device development has increased over the previous few decades to make these technologies more competitive.The idea is to develop an energy storage device that allows for the cheaper storage of electricity during off-peak hours and subsequent distribution.Supercapacitors can store and release energy at a very quick pace, delivering tremendous current in a short amount of time. The study and development of supercapacitor technology has accelerated in the recent decade.Carbon-based materials are gaining popularity as supercapacitor electrode materials because of their large specific surface area, high electrical conductivity, and long-term durability. In recent years, there has been a growth in biomass-derived activated carbons as an electrode material for supercapacitor applications.The concept of a bio-waste-based supercapacitor electrode material contributes to waste reduction by converting garbage into a valuable product.It also makes an economic argument for the relevance of supercapacitor technology.This article discusses current advances in carbon-based compounds derived from bio-waste for supercapacitor technology.
- 114. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 93 Recent developments of advanced luminescent glasses for reddish orange emitting device applications R. Rajaramakrishna 1,* 1 Siberian Federal University, 79 Pr. Svobodny, Krasnoyarsk, Russia, 660041 * r.rajaramakrishna@gmail.com ABSTRACT: In recent times glasses have found a very interesting and vital role in providing support for the research community to experiment and develop new nascent technologies that can mimic the novel materials which are promising for cutting-edge solid- state lighting technologies. The glasses being conventional material which can accommodate for higher concentration of rare-earth ions unlike other phosphor materials. The review work emphasis on the glasses that are recently been able to compete with the commercially available materials which makes them unique and interesting to understand their role in the field of solid-state light emitting device applications. Samarium (Sm 3+ ) ions doped in oxide and oxyfluoride glasses when co-doped with gadolinium (Gd 3+ ) ions enhance the luminescence intensity and improves the quantum efficiency. The work focuses on bringing out the significant importance of several glass formers co- doped with samarium ions and gadolinium ions and their structural importance which alters their optical properties. Energy transfer phenomena is another interesting fact which is most often observed when gadolinium ions are used as sensitizers (gadolinium) to neighboring rare-earth ions. In the present review work the detailed analysis of various glass formers and their importance towards luminescence properties will be emphasized and compared.
- 115. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 94 Structural and Magnetic Properties of Fe2-xCoxVAl Heusler Alloys Ashok Yadav, Vivek Kumar Jain* Department of Physics, School of Basic and Applied Sciences, Career Point University, Kota, 325001 Rajasthan, India Email: ashokkumar563547@gmail.com, vivek.jain129@gmail.com * Abstract Structural and Magnetic Properties of Fe2-xCoxVAl Heusler alloys (x=0.0, 0.5, 1.0, 1.5, 2.0) had been investigated in the present research. XRD patterns were identified as a single-phase Heusler-type with a cubic ordered structure with decisive (200), (220), (400) and (422) principle reflections for all samples. On increasing the Co concentration the saturation magnetic moment increases from 0.2439 emu/gm to 4.0986 emu/gm while coercive field decreases. The magnetic properties enhanced by Co doping in Fe2VAl Heusler alloy. Keywords: Heusler Alloys, Structure Properties, Magnetic Properties, Saturation Magnetization, Coercive Field.
- 116. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 95 Structural, Vibrational, Electronic, and Thermophysical properties of Al-Ni alloy Vaishali Nathwani, Bhavik Thacker Parul University, P. O. Limda, Ta. Waghodia, Vadodara, 391 760, Gujarat, India Corresponding author: vaishali.nathwani@paruluniversity.ac.in Abstract: A comprehensive first-principles calculation of the structural, vibrational, electronic, and thermophysical properties of B2 AlNi alloy is studied using plane-wave pseudopotential density functional theory (DFT). PAW-type pseudopotential with the exchange-correlation of Perdew-Burke-Ernzerhof (PBE) is used for the present computations. Our computed equilibrium lattice constants are in good agreement with the reported results. Phonon dispersions and phonon density of states of the B2 AlNi phase predict a dynamically stable phase along the high symmetry directions of the Brillouin zone. Further, the electronic band structure along with the total and projected electronic density of states, electronic charge density, and Fermi surfaces of B2 phases of AlNi alloy is also studied. Various thermophysical properties, namely Room temperature thermal equation of states, Coefficient of thermal expansion at different temperatures, isothermal bulk modulus at different temperatures, Specific heats as a function of temperature, Temperature dependence of Debye temperature, Grüneisen parameter as a function of temperature are investigated using methodology as implemented in quasi-harmonic Debye model. Conclusions based on the phonon dispersion curves, phonon density of states, electronic band structure along with the total and projected electronic density of states, electronic charge density, Fermi surface, and thermophysical properties are outlined. Keywords: AlNi, DFT, lattice parameter Phonon dispersion curve, Phonon density of states, electronic band structure, electronic charge density, Fermi Surface, thermophysical properties.
- 117. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 96 Novel material :Graphite Carbon Nitride Prathibha Hampapura Doddananjaiah1a ; Sushmashree krishnappa1b ; Shankramma Kalikeri*1 ; Charan Kumar Kachintaya2 ; and Lingaraju HG3 1 *Division of Nanoscience and Technology, School of Lifesciences, JSS Academy of Higher Education and Research, Sri Shivarathreeshwara Nagara, Mysuru – 570 015, Karnataka, India. 2 No 29, opt Kakubal Palace, Vadiraj school road dead End. Shankar colony 1st cross, SN Pet, Ballari, Karnataka, India,583101 3 Department of Environmental Science, School of Natural Science, JSS Academy of Higher Education and Research Sri Shivarathreeshwara Nagara, Mysuru – 570 015 Karnataka, India *Corresponding author Email: shankrutk@jssuni.edu.in Abstract: Graphitic carbon nitride (g-C3N4/GCN), is a polymer material made up of carbon, nitrogen, and some impurity hydrogen that is affiliated together using tris-triazine- based patterns.In g-C3N4, both C and N atoms are sp2 hybridised. They are connected by σ bonds, forming a hexagonal structure. This hexatomic ring is called triazine ring. Because of the inclusion of N and H atoms, it has electron-rich characteristics, basic surface functions, and H-bonding motifs, compared to other carbon materials. It is highly valued due to its distinctive electrical structure and superior chemical stability.It has Excellent electro luminescent qualities are combined with fantastic mechanical properties, chemical inertness, non-toxicity, and strong biocompatibility mainly used for biosensor application. also express their increased applications in different areas and it is one of the most promising materials for photocatalytic processes, including the removal of organic pollutants from the environment ,reduction of CO2 and water splitting. And its shows promising activity towards artificially photocatalytic hydrogen production. It has become increasingly important in the fields of health safety and medicine health in recent years,also have beneficial to the application in the field of biomedicine and biological imaging. Many researchers are investigating its functions and using this as a foundation to develop related energy and goods for applications in a variety of fields as a result of its distinctive graphite-like structure and stable thermodynamic features. It hasexcellent physico-chemical properties and have considerable Prospect in antibacterial applications, energy and environmental areas. In addition, GCN and its composites also play a great application in detecting pesticide residues. It can provide a high specificity and sensitivity detection method for drug detection. and showed good performance in high loading and sustained-release application of water-soluble
- 118. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 97 drugs. It has been widely used in nanomedicine due to its special photocatalytic properties is completely suitable for cancer treatment it can induce apoptosis and necrosis of cancer cells to a certain extent, and more used in glucose detection. GCN based material synthetic approaches can be divided into two different categories, i.e., top-down and bottom-up strategies. This paper highlighted the properties and different applications. Key words: Graphite carbon nitride, applications
- 119. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 98 Li doped MgFe2O4 for Humidity Sensor Applications SammedShantinath Hardi1 , Jagadeesha Angadi V1 , Chathan Kumar B2 1 Department of Physics, K.L.E’s Society’sP.C.Jabin Science College, Hubli-580031, Karantaka, India 2 Department of physics, Indian institute of science (IISC), Bangalore, Karnataka, India *Corresponding Author: jagadeeshbub@gmail.com Abstract Recently, there has been increased interest in studying ferrite nanoparticles as potential humidity-sensing materials. Our research focuses on the humidity-sensing properties of MgFe2-yLiyO4 (with varying lithium-ion concentrations) synthesized through the solution combustion synthesis method. We analyzed the powder samples using powder X-ray diffraction (PXRD) and observed their humidity-sensing behavior. Our results showed that with an increase in lithium-ion concentration, the lattice parameter (8.373 to 8.375Å), unit cell volume (586-588 Å), and crystallite size (16-19 nm) all increased. The PXRD confirmed that the nanomaterial had a single Fd3m space group phase. We used this powder to create a humidity sensor, and our research showed that the addition of Li2+ increased the resistance, with the maximum enhancement observed at Li = 0.05, resulting in the highest average sensitivity. Overall, the synthesized materials show promise for humidity sensor applications with excellent stability and strong repeatability. Additionally, the thin-film humidity sensor we manufactured had response and recovery durations of 9 and 12 seconds, respectively. Our results suggest that prepared materials are useful for humidity sensor applications. Key words: Ferrites, Humidity, XRD, resistance
- 120. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 99 Bio-waste as an Electrode Material for Energy Storage Devices: A Sustainable Approach to Green Energy Yamini Guptaa , Poonam Siwatchb , Kriti Sharmaa∗, S.K. Tripathic∗ a Department of Physics, Goswami Ganesh Dutta Sanatan Dharma College, Sector 32-C, Chandigarh, 160014, India b Department of Physics, Arya Kanya Mahavidyalaya, Shahabad (M), Haryana, 136135, India c Department of Physics, Centre for Advanced Study in Physics, Panjab University, Chandigarh, 160014, India * Corresponding author: Kriti Sharma kriti.sharma@ggdsd.ac.in, S.K. Tripathi surya@pu.ac.in Abstract: Global research interest in renewable energy sources has increased dramatically during the previous few decades. Wind and solar technologies have been thoroughly researched and investigated.However, due to the high cost of these technologies and the difficulty of offering service during the off-season, they have not been widely used.Energy storage device development has increased over the previous few decades to make these technologies more competitive.The idea is to develop an energy storage device that allows the cheaper storage of electricity during off-peak hours and subsequent distribution.Supercapacitors can store and release energy at a very quick pace, delivering tremendous current in a short amount of time. The study and development of supercapacitor technology has accelerated in the recent decade.Carbon-based materials are gaining popularity as supercapacitor electrode materials because of their large specific surface area, high electrical conductivity, and long-term durability. In recent years, there has been a growth in biomass-derived activated carbons as an electrode material for supercapacitor applications.The concept of a bio-waste-based supercapacitor electrode material contributes to waste reduction by converting garbage into a valuable product.It also makes an economic argument for the relevance of supercapacitor technology.This article discusses current advances in carbon-based compounds derived from bio-waste for supercapacitor technology.
- 121. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 100 Synthesis and Studies on the Optical limiting behavior of Polyindole- ZnONano Composites S. Pramodini1,a) , K. K. Nagaraja2 , and P. Poornesh2 1 Department of Physics, REVA University, Kattigenahalli, Yelahanka, Bengaluru -560064, India 2 Department of Physics, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal -576104, India a) Corresponding author: somynraj@gmail.com Abstract. We have synthesized polyindole-ZnO nanocomposites via oxidative polymerization technique andconducted the studies on their optical limiting (OL) behavior. Thin films of the samples were prepared using spin coating technique. The OL behavior was performed for different ZnO concentrations using continuous wave He-Ne laser operating at 633 nm wavelength as source of excitation. The prepared films depicted goodoptical power limiting of ~11 mW and a clamping of ~5 mW.
- 122. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 101 Crystal structure and magnetic properties of (1-x)LiZn2.5Ti2.5O8 – xLiFe5O8 spinel-structured solid solution ceramics Anton A. Zabolotnyi, Stanislav P. Kubrin, Nikita V. Ter-Oganessian Research Institute of Physics, Southern Federal University, 344090, Rostov-on-Don, Russian Federation e-mail: zabolotnyi@sfedu.ru Abstract: Compounds with the spinel structure AB2X4 (A and B – metals, X – O, S, Se, Te) demonstrate a wide variety of compositions due to the wide substitution possibilities both in cationic A and B and in the anionic sublattice X. This also determines the variety of physical properties of spinels, which allows us to consider them as promising functional materials. The diversity of magnetic phenomena in spinelsmakes promising the search for compounds or solid solutions that are multiferroic or exhibit a linear magnetoelectric effect (ME),however a relatively small number of suchspinels have been discovered [1]. A necessary condition for the occurrence of a magnetoelectric couplingis the absence of a center of inversion of the crystal structure. In spinels, the presence of different kinds of atoms in cationic sublattices can suppress the center of inversion due to the possibility of atomic ordering. Thus, LiFe5O8 spinel has high ferrimagnetic ordering temperatures and exists in two modifications: disordered (sp.gr. Fd3 ̅m) and ordered (sp.gr.P4132 and P4332). The latternoncentrocymmetric structure is characterized by a 1:3 atomic ordering of Li and Fe in the B-sublattice, but admits, however, only a quadratic ME. Previously, the existence of linear ME in spinels of type 𝐴1/2 ′ 𝐴1/2 ′′ 𝐵2𝑋4 with 1:1 atomic ordering in the A-sublatticewas predicted, which leads to a decrease in symmetry to F4 ̅3m [2], however, such compounds have not yet been experimentally detected. In this paper, the synthesis of solid solutions (1-x)LiZn2.5Ti2.5O8 – xLiFe5O8was carried out by the solid-phase method. The crystal structures of the obtained solid solutions were investigated by X-ray diffraction analysis and refined by the Rietveld method, the magnetic ordering temperatures and the local crystalline environment of iron were studied by the Mössbauer spectroscopy method, and magnetic hysteresis loops were studied at room temperature. The work was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation (State assignment in the field of scientific activity, project № FENW-2023-0015).
- 123. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 102 Fabrication of W doped VO2/PVB thin film for smart window applications Nazia Shaikha , Sunitha D Va * a Department of Physics, School of Applied Sciences, REVA University, Bengaluru-560064, Karnataka, India (*Corresponding Author: Dr.Sunitha D V; E-mail: sunitha.dv@reva.edu.in; Mob: +91- 7760884884) Abstract Vanadium dioxide (VO2)is widely considered as one of the most suitable material to act as a thermochromic material for smart window application.VO2undergoes a metal-to-insulator transition (MIT)at 68◦ C accompanied by a structural phase transformation, from monoclinic to rutile phase. In this work, tungsten-doped VO2 nanoparticles (W-VO2 NPs) were synthesized by a simple hydrothermal method with different W doping concentrations(0,1,2,3,4 wt%). The formation of monoclinic phase of W-VO2 sample was confirmed by using powder X-ray diffraction (PXRD). Further, W- VO2 NPs were directly dispersed in polyvinyl butyral (PVB) with different viscosity (0,0.1,0.2,0.3,0.4,0.5 mL) to cast the VO2 composite film. The microscopic morphology of the samples was observed by field emission scanning electron microscopy (SEM) and the elemental distribution of V, O and W doping ratio of different wt% were characterized by an energy-dispersive X-ray spectroscopy (EDS). Further, the thermochromic properties need to be analyzed byusing UV-Vis-NIR spectrophotometer for smart window applications.
- 124. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 103 Structural Properties of Magnetic Spinel Cobalt Ferrite Synthesized by Oxalate Precursor Method S. B. Godase1 , R. R. Jojan1 , S. B. Rathod2 , B. L. Shinde2 and K. S. Lohar1* 1 Department of Chemistry, Shrikrishna Mahavidyalaya, Gunjoti, Osmanabad, 413606, (MS), India 2 Department of Chemistry, Waghire College of Arts, Commerce and Science, Saswad, Pune, 412301, (MS), India *E-mail : kslohar@rediffmail.com ABSTRACT Nano spinel cobalt ferrites synthesized by oxalate precursor method. Synthesized oxalate precursor characterized by room temperature FTIR in the range of 400–4000 cm-1 .Oxalate precursors calcinated at 600 o C to obtain desired cobalt ferrite. XRD pattern of calcinated cobalt ferrite confirmed formation of cubic spinel structure without any secondary phase.Two major IR absorption bands observed, at 585 cm- 1 and 436 cm-1 were allocated to the tetrahedral A-site, and the octahedral B-site respectively.Very fine spherical CoFe2O4 particles with some quantity of aggregation may be observed within the SEM and TEM images. The saturation magnetization (Ms) observed at room temperature was58.72 emu/gm. Keywords: Cobalt ferrite, Magnetic, Oxalate precursor method; Cubic spinel structure.
- 125. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 104 Structural and absorption studies of rare earth doped Cd2+ Chromates using X ray diffraction technique and ultraviolet spectral studies Soumya S. Kulkarni1 ,Shainaz Nadaf1 ,Sofia Sultana Laxmeshwar1 ,Chethan B,2 Swathi K. M1 ,Hemantkumar M. Savanur1* , Jagadeesha Angadi V2* 1 Department of P. G. Studies in Chemistry, P. C. Jabin Science College, Hubballi-31, India 2 Deparment of Physics, Indian Institute of Science, Bengaluru-12, India 3 Department of Physics, P. C. Jabin Science College, Hubballi-31, India Corresponding Authors: hemantkumarsav@gmail.com, jagadeeshbub@gmail.com Abstract In this study, Cd+2 doped cobalt chromates were synthesised by solution combustion method using urea and glucose as fuels for the first time. Several analyses were performed on the prepared powder samples, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX), to look at the structural and morphological changes in Co(1-x)CdxCr2O4 (where x = 0.03, 0.06, 0.09, 0.12). The XRD data demonstrated that a single phase without an impurity peak. The two significant bands in the FTIR spectra at 532 cm1 and 360 cm1 , which are characteristics of spinel ferrite, were visible. SEM micrographs showed that the nanoparticles had a nearly spherical shape and porous nature. Additional examination of the nanoparticle with EDAX confirmed the elemental composition. Key words: Cadmium chromates, Microstructure,porous.
- 126. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 105 Optimistic Influences of Nanotechnology on Food Improvement and Food Security Sushma Shree Krishnappa1 ; Prathibha Hampapura Doddananjaiah 2 ; Preethi Bevinathalapura Shivaswamy3 ; Shankramma Kalikeri*1 ; Charan Kumar Kachintaya.4 1 * Division of Nanoscience and Technology, School of Lifescience, JSS Academy of Higher Education and Research Sri Shivarathreeshwara Nagara, Mysuru – 570 015 Karnataka, India. 2 Division of Nanoscience and Technology, School of Lifescience, JSS Academy of Higher Education and Research Sri Shivarathreeshwara Nagara, Mysuru – 570 015 Karnataka, India. 3 Division of Nanoscience and Technology, School of Lifescience, JSS Academy of Higher Education and Research Sri Shivarathreeshwara Nagara, Mysuru – 570 015 Karnataka, India. 4 #9A, Shankar Colony I Cross, SN Pet, Ballari - 583101, India Abstract Every year globally, contaminated food is responsible for 420, 000 deaths and 600 million cases of food-borne infection. According to WHO, approximately 30% of death occurs among children (≤5 years) due toxin and adulterant can induce vomiting, diarrhoea to paralysis and even death. Being primary and fundamental need of humans. Food safety is a first and foremost concern of human life. Blunting the impact of foodborne disease means detecting contaminants and adulterants in foods with better efficiency, but food analysis is challenging. One of the best technologies that have emerged within the last twenty years with applications in the packaging of food and industrial materials is the use of green mode-based synthesized nanoparticles (NPs). Several benefits of projected food nanotechnology like the use of stable emulsions, less fat, better taste in mayonnaise, ice-cream, canned stuff taste masking of additives including fish oils, enhanced level of nutrients, optic appearance, antimicrobial action, supplements, and other nano-textured food prepared after killing of pathogenic microbes. It also offers flexibility in packaging, moisture, temperature, gas barrier activities and helps in maintaining active packaging using M-NPs. Keyword: Food crisis, Nanomaterial, Nano Packaging, Nano Sensors
- 127. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 106 Investigating the Proficiency of Tungsten Oxide Sensor for Outstanding Nitrogen Dioxide Detection Gajanan M. Hingangavkara,b , Sushilkumar S. Bandgara , Ramesh N. Mulika and Vikas B. Patilb, * a Department of Physics, DBF Dayanand College of Arts & Science, Solapur, (MS), India-413002. b Functional Materials Research Laboratory, School of Physical Sciences, PAH Solapur University, Solapur, (MS), India-413255. *Email: drvbpatil@gmail.com/vbpatil@sus.ac.in Abstract Asimple, cost-effective, template free hydrothermal route wasutilized to synthesize tungsten oxide (WO3) nanomaterial. Advantageously, WO3 films werecoated directly on the glass substrate in hydrothermal reaction at temperature 90°C for 3h.Utilizing X-ray diffractometry (XRD), the crystallographic analysis has definitively verified the emergence of exceedingly crystalline nanostructures of WO3. These structures exhibit an interplanar spacing (d) of 0.32 nm and a crystallite dimension of 18.23 nm.The flower-like WO3 nanostructure is visualized utilizing surface morphological analyses using field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). Energy dispersive X-ray analysis (EDAX) study has confirmed the existence of W and O. During the Raman spectroscopy assessment, the spectrum portraying the synthesized WO3 nanostructures revealed distinct, well-defined peaks of a crystalline characteristic. Notably, an intense peak at 811 cm-1 corresponds to the stretching mode of the O─W─O bond. Additional features include a relatively less intense peak at 242 cm-1 and a subtle shoulder peak at 329 cm-1 , both indicative of the bending mode associated with the W─O─W bond.The Fourier transform infra-red (FT IR) spectroscopy analysis confirms the result obtained from the Raman spectroscopy. The chemiresistive basedgas sensor wasfabricatedusing the as-prepared WO3film. Theas- fabricated gas sensor was tested for diversetargetgases as NO2, NH3, CO2, H2S, SO2, and CO.The sensor has exhibitedmaximum response for NO2 gas at 200o C.The least concentration has detected by the as-fabricated WO3 sensor was 1 ppm. Remarkable gas sensing performance of WO3 sensor arises from its inherent structural properties, as evidenced by crystallographic and Raman spectroscopy analyses. The interplay between its crystallinity, interplanar spacing, and electronic configurations confers a high degree of sensitivity to NO2 molecules, thus positioning WO3 as a compelling option for advanced gas sensing technologies. Keywords: Tungsten oxide; hydrothermal; NO 2 ; gas sensor.
- 128. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 107 ZnONanorods on GCN/PPD/TCFP with Ternary Synergy for Promoting Furfuryl Alcohol Oxidation Roopa Margaret Rodrigues, Anitha Varghese Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, Karnataka- 560029, India. Abstract In this work Poly(o-phenylenediamine)(PPD) and ZnO nanoparticles were electrochemically deposited on GCN (graphitic carbon nitride) coated TCFP (Toray carbon fiber paper) electrode. The modified electrode GCN-PPD-ZnO-TCFP was characterized by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction analysis (XRD), and X-ray photoelectron spectroscopy (XPS) studies. The electrochemical studies were carried out via cyclic voltammetry and electrochemical impedance spectroscopic techniques. The developed electrode was employed for the oxidation of furfuryl alcohol using 4- ACT as a mediator in alkaline medium. The oxidation of furfuryl alcohol to furfural was accelerated by the heterogeneous catalyst GCN-PPD-ZnO-TCFP electrode owing to its good electrocatalytic activity and stability. Email address: anitha.varghese@christuniversity.in(Anitha Varghese)
- 129. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 108 Electrochemical synthesis of MOF-PTA composite as novel electrode material for the simultaneous determination of Catechol and Resorcinol Sandra Josea , Anitha Varghesea* a Department of Chemistry, CHRIST (Deemed to Be University), Bengaluru 560029, India. *Corresponding author Email address: anitha.varghese@christuniversity.in(Anitha Varghese) Abstract Facile and superior electrochemical fabrication route was procured to develop the composite of Cu-BTC-MOF/PTA/CFP electrode for the concurrent detection of catechol and resorcinol. The high level of toxicity and weak degradation capacity of these phenolic compounds led to their pernicious nature. Surface morphology and nanoscale deposition of the metal organic framework was studied with the aid of field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), elemental mapping analysis, high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR). Electrochemical characterization was performed to analyse the conductivity, electrochemical surface area and electrochemical activity of Cu-BTC-MOF/PTA/CFP electrode. Cyclic voltammetric studies depicted the high sensitivity of the fabricated electrode in the determination of these phenolic pollutants. Under optimized conditions limit of detection was accounted to be 3.33 nM and 8.33nM for catechol and resorcinol respectively. In addition, the Cu-BTC-MOF/PTA/CFP electrode was scrutinized for its stability, reproducibility and selectivity. Real sample analysis was carried out to validate the analytical application. Keywords: Cu-BTC, polymer, catechol, electrochemical sensor, metal organic framework
- 130. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 109 Development of Electrically conductive flexible nanocomposite electrode materials for supercapacitor applications by incorporating o-anisidine into crosslinked poly (vinyl alcohol). Mohemmedumar S. Mulla1, a , Mahadevappa Y. Kariduraganavar1, b* 1* Department of Chemistry, Karnatak University, Dharwad 580 003, India Email of corresponding author: mahadevappayk@gmail.com ABSTRACT Poly(vinyl alcohol)-tetraethyl orthosilicate-poly o-anisidine (PVA-TEOS-O- ANISIDINE) nanocomposite membranes were developed by incorporating the o- anisidine and their in-situ polymerization in the crosslinked PVA matrix.The resulting PVA-TEOS-O-ANISIDINE Electrically conductive membranes were characterized to ascertain their physicochemical properties by various techniques.The electrochemical properties were investigated by cyclic voltammetry,galvanostatic charge-discharge and electrochemical impedance measurements in 1M H2SO4 aqueous electrolyte.The developed nanocomposite membranes,PVA-TEOS-Poly(o- anisidine) nanocomposite membrane exhibited the highest specific capacitance of 401.9 Fg-1 with the high energy density and power density of 281.98Wh kg-1 and 836.25Kw kg-1 ,respectively. In addition, the developed electrode material shows the capacitance retention of 82.1% even after 2500 cycles based on the superior electrochemical performance, the developed nanocomposite membrane could be a promising electrode material for flexible supercapacitor device. Keywords: Poly o-anisidine, Tetraethyl orthosilicate, electrically conductive, Supercapacitor
- 131. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 110 Synthesis, Crystal Structure and Computational Analysis of 4H- Chromene Analogues T.C. RAVEESHA1 , K. MANTELINGU2 , T. DEMAPPA1* , CHANDRA3 , B.M. RAJESH4 1 Department of Post graduate Studies and Research in Polymer Science, Sir M Visvesvaraya Post Graduate Centre, Tubinakere, Mandya-571402 2 Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru-570 006, Karnataka, India 3 Department of Physics, The National Institute of Engineering, Manandavadi Road, Musuru- 570008, Karnataka, India 4 Department of Physics, RV College of Engineering, Bangaluru-560059, Karnataka, India *Corresponding author E-mail:tdemappa2003@yahoo.co.in ABSTRACT 4H-chromene derivatives, 4(a-d) synthesized by the multicomponent condensation reactions (MCRs) and spectroscopically characterized using FT-IR, 1 H-NMR and mass spectroscopytechniques. The 3-D structure of 4b compound was determined using single crystal X-ray diffraction method. Hirshfeld surface analysis is used as theoretical approach to assess the various intermolecular interactions in the structure that driven the self-assembly of molecules in crystal lattices. Quantitative measurement is done for the structure in which Globularity (G) and Asphericity (Ω) provide significant information about the shapes of molecule in crystal. The geometrical optimization of the structure of the compound 4b in gas phase was done using DFT calculations and 3-D molecular electrostatic potential map of the structure was generated. Further, the compounds 4(a-d)were docked with protein target (PDB Code: 1KZN)to analyze their binding affinity. Keywords:Chromene; Crystal structure; Hirshfeld surface analysis; DFT; Molecular docking.
- 132. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 111 Modification of Polystyrene Sulfonic Acid -co- Maleic AcidCrosslinked Chitosan Membrane by Incorporating Diethyl Phthalate and Its Application to the Pervaporation Separation of Water/Tert-butanol Mixtures. Suhasini V. Kotura , M. Y. Kariduraganavara* Department of Studies in Chemistry, Karnatak University Dharwad-580003,India Email Id: suhamk23@gmail.com Over the last few decades, several industries have been focused much on the development of new membranes for better performance in the separation of azeotropic mixtures, close boiling liquids and isomers.Pervaporation is the most efficient and core technique in membrane separation because of low energy consumption, cheap, ecofriendly, good output results.Itprovidesseveral advantages over typical techniques such as distillation and solvent extraction. Employing a solution - casting technique, chitosan crosslinked with polystyrene sulfonic acid -co- maleic acid and subsequently modified by the incorporation of different wt% of diethyl phthalate as a plasticizer in order to obtain soft and flexible polymeric membranes.Chitosan has a good film forming properties, good mechanical strength and functional groups present in this can be easily modified.Here we made use of polystyrene sulfonic acid -co -maleic acid (PSSMA) as a cross linker to enhance selectivity and to increase hydrophilicity of the membrane. Excess of cross linkers make membranes to be brittle which is not suitable for pervaporation process. So to overcome this problem, we have made use of plasticizer in the membrane preparation.The physico-chemical properties of resulting membranes were characterized by using different techniques like Fourier transform infrared (FTIR) spectroscopy, wide-angle X-ray diffraction (WXRD), differential scanning calorimetry (DSC), Thermogravimetric analysis(TGA)and Water contact angle. Polyelectrolyte complex membranes weretested for their potentiality to separate water/tert butanol mixture. By the experimental results, flux and selectivity will be calculated.Separation of azeotropic mixtures will become easier one due to flexibility in the membrane matrix Keywords: Chitosan,Pervaporation, Selectivity,Separation
- 133. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 112 Optical Band- Gap Analysis of Green Synthesized Zinc Oxide Nanoparticles Preeti Soni, Kanchan Ranva and Shweta Vyas* Department of Pure and Applied Chemistry, University of Kota,Rajasthan,India *shwetavyas@uok.ac.in Abstract The multifunctional properties of Zinc Oxide Nanoparticles (ZONPs) have led to recognize them as a material of great potential in the field of cosmetics, paints, light emitting diodes, biocatalysis, photocatalysis etc.Owing to the various disadvantages associated with the conventional synthesis of ZONPsusingharsh conditions of physical approaches or hazardous chemical methods, there is a growing need for eco-friendly methods suitable for low-cost production of ZONPs.The present study describes a cost-effective and eco-friendly method for producing Zinc Oxide Nanoparticles (ZONPs) using different waste peel extracts.This strategy aims to represent greener synthesis of ZONPsto minimize the use of hazardous chemicals in ZONP fabrication. In this study, Zinc acetate dihydrateis converted into ZONPs using aqueous extracts of waste peels viz. onion, potato and tomato peels and characterized by UV spectroscopy.UV–vis spectral studies have been performed to calculate the band gap and nanoparticle size to correlate the particle sizes with theUV–vis absorption wavelength.The optical band gap values of the prepared ZONPs nanoparticle were found to be higher (3.49-3.64 eV) than the standard value (3.37eV) which indicated the presence of blue-shift and increase in absorption of sunlight irradiation by ZONPs. The present study proposed an eco-friendly methodfor ZOPN synthesis as a relatively inexpensive and economical method for their multifaceted possible applications. Key Words-Zinc Oxide nanoparticles, waste peels extract, Greener synthesis, Band-gap studies
- 134. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 113 Multiband Flag Shaped Slotted Printed Antenna for Wireless Communication Mamatha A G Department of Applied Electronics, Gulbarga University Kalaburagi Abstract: A thin rectangular and circular slots embedded on the radiating patch of a printed antenna to form a flag shaped printed antenna. Dimensions of the antenna structure is 8x4x0.16cms is designed using flame retarted substrate. the printed antenna is simulated using HFSS software and results in four different frequencies f1 = 2.80 GHz, f2 = 7.19 GHz, f3 = 9.22 GHz and f4 = 12.93 GHz with good return loss having a gain of 5.62dB. The proposed design is fabricated using photolithography and experimental results are carry out using vector network analyzer. Key words: HFSS, Slot, FR4 and photolithography.
- 135. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 114 Extracted Pectin graft Polyacrylamide Silver Nanocomposite Hydrogel Beads : Preparation and its Characterization Purushothama I. and Gangadhar Babaladimath PG. Department of Chemistry, K. L. E. Society’s, Raja Lakhamagouda Science Institute (Autonomous), Belagavi, Karnataka. India- 590001 Email-purushotham.iyli@gmail.com and gangadhar.0058@gmail.com Abstract: The biopolymer Pectin was extracted from citrus fruit peel using acid medium. Extracted Pectin-graft-poly(acrylamide) (EP-g-PAM) gel was made in the form of beads using the solution containing extracted pectin (EP), acrylamide (AM) and ammonium peroxodisulphate (APS) heated at 60 ºC followed by ionic crosslinking in CaCl2 solution. Gel beads containing silver nanoparticles were also prepared by the same method via chemical reduction but with the addition of silver nitrate and sodium borohydride solution. The synthesized graft copolymers beads and nanocomposite beads have been characterized using Fourier transform Infrared (FT-IR), Thermogravimetric analysis (TGA), X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy Dispersion X-ray spectroscopy (EDS) and Transmission electron microscopy (TEM) techniques. These techniques confirmed the grafting of acrylamide on extracted pectin and incorporation silver nanoparticles into the parent beads. Keywords: Extracted Pectin; Acrylamide: Silver Nanoparticals; Beads
- 136. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 115 Impact of Distributed Generation on Present Power System Operation and Control Practices CHANDRASHEKAR P Working at Karnataka German Technical Training Centre, MYSURU UNIVERSITY: VTU Abstract Energy is one of the major inputs for the economic development of any country. In case of a developing country, energy sector assumes a critical importance in view of the ever increasing energy needs requiring huge investment to meet them. Energy planning in our country is not an integrated activity. The plans for electricity, oil, coal and firewood are separate exercises. Secondly, the planning activity considers only the demand and projects the demand over a period of years. The efficiency in utilization has not been investigated. The primary goal of planners is for supply expansions based on the assumption of linkage between energy consumption and the economic growth of a region. With this approach, energy becomes an end in itself and the focus shifts on meeting increased energy consumption through energy supply expansion alone. This supply and demand based planning for each individual energy form has resulted in problems like inefficiency, losses, more conversions and other environmental problems. This conflict between energy demand and environmental quality goals can be solved by an integrated approach to the problem of energy planning with emphasis to minimize the consumption of non-renewable sources of energy such as coal, oil, etc., to maximize the efficiency of end use devices in all sectors and to organize an approach towards optimal use of renewable sources. This path would certainly help in boosting economic growth of a region and equally important, it promotes structural changes that are conductive to overall development. Distributed generation may have a significant impact on the system and equipment operation in terms of steady state operation, dynamic operation, reliability, power quality stability and safety for both customer and electricity suppliers. This impact may manifest itself either positively or negatively, depending on the distribution system, distributed generator and load characteristics.
- 137. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 116 Photoluminescence studies of copper doped zirconium titanate nanoparticles S. Akshaya.b , Y S Vidyac , H C Manjunathad a Department of Physics, East West Institute of Technology, Bengaluru, Karnataka 560091, India b Department of Physics, Maharani Lakshmi Ammanni College for Women, Autonomous Malleshwaram, Bengaluru, Karnataka 560012, India c Department of Physics, Lal Bahadur Shastri Government First Grade College, R T Nagar, Bangalore, Karnataka 560032, India d Department of Physics, Government College for Women, Kolar, Karnataka 563101, India For the first time, Zirconium titanate doped with copper (1–9 mol %) was synthesized by an aloe vera-mediated combustion route followed by calcination at 700o C. The high crystallinity and pure orthorhombic structure are confirmed through Bragg reflections. The surface morphology consists of larger particles along with agglomeration. The lattice d-spacing’s and selected area electron diffraction patterns confirm the purity of the sample. The crystallite size increases, whereas the energy band gap determined from Wood and Tauc's relationship decreases. The photoluminescence analysis excited at 471 nm and the Commission Internationale de L'Eclairage (CIE) and color-correlated temperature (CCT) values confirmed that the synthesized sample is a promising candidate for display technology as a yellow nanophosphor. Thus, the present synthesized material might find applications in the fields of display technology.
- 138. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 117 Study on the current gain of radiation-induced transistor BC-107 K. Shalini, K. V. Shravani and L. F. M. Anand* Department of Post-Graduate Studies in Physics, Government First Grade College- K R Puram, Bangalore, Karnataka, India *E-mail: francismanand@gmail.com Abstract Devices using electronic components especially in space applications get incessantly exposed to solar radiations and cosmic radiations from the outer space. Reliability issues in current gain and amplification factors of such devices exposed to radiationis been reported. In the present work, current gain of a bipolar junction transistor BC-107 is studied both before and during radiation exposure. Current gain of a metal cap BC-107 NPN transistor in the common emitter mode is studied from its output characteristics in the absence of external radiation.The procedure is repeated for consistency in the current gain. The transistor is now irradiated with 32.2keV barium K X-ray photonsand 662 keV gamma photons from a weak cesium-137 source and 88.0 keV lead K X-rays from the shielding material. Irradiating the transistor with these photonscontinuously the current gain of the transistor is studied in the same common emitter mode. The current gain of the transistor both before inducing radiationand after inducing radiation is compared.Anomalies in the current gain of the transistor investigated is reported
- 139. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 118 Crystal structure and magnetic properties of (1-x)LiZn2.5Ti2.5O8 – xLiFe5O8 spinel-structured solid solution ceramics Anton A. Zabolotnyi, Stanislav P. Kubrin, Nikita V. Ter-Oganessian Research Institute of Physics, Southern Federal University, 344090, Rostov-on-Don, Russian Federation e-mail: zabolotnyi@sfedu.ru Compounds with the spinel structure AB2X4 (A and B – metals, X – O, S, Se, Te) demonstrate a wide variety of compositions due to the wide substitution possibilities both in cationic A and B and in the anionic sublattice X. This also determines the variety of physical properties of spinels, which allows us to consider them as promising functional materials. The diversity of magnetic phenomena in spinelsmakes promising the search for compounds or solid solutions that are multiferroic or exhibit a linear magnetoelectric effect (ME),however a relatively small number of suchspinels have been discovered [1]. A necessary condition for the occurrence of a magnetoelectric couplingis the absence of a center of inversion of the crystal structure. In spinels, the presence of different kinds of atoms in cationic sublattices can suppress the center of inversion due to the possibility of atomic ordering. Thus, LiFe5O8 spinel has high ferrimagnetic ordering temperatures and exists in two modifications: disordered (sp.gr. Fd3 ̅m) and ordered (sp.gr.P4132 and P4332). The latternoncentrocymmetric structure is characterized by a 1:3 atomic ordering of Li and Fe in the B-sublattice, but admits, however, only a quadratic ME. Previously, the existence of linear ME in spinels of type 𝐴1/2 ′ 𝐴1/2 ′′ 𝐵2𝑋4with 1:1 atomic ordering in the A-sublatticewas predicted, which leads to a decrease in symmetry to F4 ̅3m [2], however, such compounds have not yet been experimentally detected. In this paper, the synthesis of solid solutions (1- x)LiZn2.5Ti2.5O8 – xLiFe5O8was carried out by the solid-phase method. The crystal structures of the obtained solid solutions were investigated by X-ray diffraction analysis and refined by the Rietveld method, the magnetic ordering temperatures and the local crystalline environment of iron were studied by the Mössbauer spectroscopy method, and magnetic hysteresis loops were studied at room temperature. The work was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation (State assignment in the field of scientific activity, project № FENW-2023-0015).
- 140. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 119 Role of Dy3+ in Mg-Rb ferrites for humidity sensor applications G.H Malimath1 , Veeresh G Hiremath1,2 , Jagadeesha Angadi V2 * 1 Department of Physics, Karanataka Science College, Karanatak University, Dharwad-580003, India 2 Deparment of Physics, P.C.Jabin Science College, Hubballi-580031, Karnataka, India *Corresponding author: jagadeeshbub@gmail.com Abstract In recent years, increased focus has been placed on the investigation of ferrite nanoparticles' possible use as humidity-sensing materials. In this work we report the humidity sensing characteristics of Dysprosium doped Mg-Rb ferrites synthesized by solution combustion synthesis route. The produced Mg0.9Rb0.1DyxFe2-xO4 powder have been examined using energy dispersive X-ray spectroscopy (EDX), field effect scanning electron microscopy (FESEM), powder X-ray diffraction (PXRD), and Fourier transform infrared (FTIR). According to the results of powder XRD, unit cell volume(590-502Ao ) and crystallite size(40-26 nm) decrease when Dysprosium ion concentration increases. The nanomaterial has a single phase with the Fd3m space group, according to the PXRD. The presence of Mg, Rb, Fe, Dy, and O elements is confirmed by EDX. The samples are highly porous nature(8 to 24%) and high surface volume(0.71-0.76). The spinel ferrite structure is clearly visible in the FTIR spectra, and the bands in the high-frequency region illustrate how hygroscopic the produced materials are. The fabricated powder is employed in the creation of a humidity sensor as a sensing component. It is noted that, the composition of Dy3+ increases the enhance in the resistance and is maximum for Mg0.9Rb0.1Dy0.03Fe1.97O4 composite and is determined to have the highest average sensitivity (600 M/%RH). the composition of the Dysprosium (Dy) increases the resistance is enhanced and is maximum for the Mn0.9 Rb0.1 Dy0.03Fe2-0.03O4 composite. Hence our results are good enough for sensor applications. The manufactured thin film humidity sensor has response and recovery durations of 18 and 90 seconds, respectively. The discovered sensing material has outstanding stability and strong repeatability (98%). Key words: Humidity, sensitivity, Recovery time, ferrites.
- 141. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 120 Barrier height inhomogeneitiesof Current-Voltage Schottky Contacts to n-InP Nagaraj M K*1 *1 Department of Physics, PDIT, Hosapete, Karnataka, India *email: nmk1983@gmail.com Abstract: The Ni Schottky contact on n-InP substrate was fabricated with electron beam evaporation system in order toevaluate the barrier height, ideality factor and series resistance. The barrier height values of the investigated diode was found to be 0.57 eV and 0.59 eV respectively at room temperature. I-V parameter was mainly used, and the same parameters were determined by performing Cheung and Norde plots. It is evaluated that the barrier height values should be considered in determining the interface state density distribution. Keywords: Ni/n-InP Schottky diode . Ideality factor . Gaussian distribution . Barrier inhomogeneities, Series Resistance.
- 142. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 121 Temperature effect on the spectral characters of coumarin-6 laser dye in n-Heptane solvent Anil Kumar a , C.G. Renuka *b . a Department of Physics, Government First Grade College, Sindhanur-584128, India b Department of Physics, Bangalore university, Bengalur-560065, India * Email Id: renubub@gmail.com Abstract: The effect of temperature on the absorption and fluorescence spectra of coumarin-6 laser dye have been studied in n-Heptane solvent by steady state method for temperature ranging from 30-700 C. It is found that there is no shift in absorption and fluorescence maxima, but the fluorescence intensity decreases with increase in temperature. Fluorescence quenching mechanism is discussed in terms of radiative and non-radiative transition probabilities in transition states.
- 143. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 122 Highly Sensitive and Selective Electrochemical Sensing of Hg(Ⅱ) at the nanoscale using novel nanosized Cobalt Phthalocyanine Mohammed Yaseena , Mahadevappa Y. Kariduraganavar a, * a Department of Chemistry, Karnatak University, Dharwad, 580003, Karnataka, India. * Department of Chemistry, Karnatak University, Dharwad, 580003, Karnataka, India. Abstract The pollution of heavy metal ions seriously threatens environmental health and the human race. Mercury has been recognized as atoxic environmental contaminant. The convenient and affordable method for the detection of Hg(II) is a demand of time. To address this issue, we have synthesized novel cobalt Phthalocyanine (TACoPc) containing a thiol bridge at its periphery and characterized by various spectroscopic techniques. The presence of nanoparticles is confirmed by SEM-EDS and Dynamic light scattering particle size analyzer. The detection of Hg(II) was carried out by coating TACoPc on a Glassy carbon electrode(GCE). The detection of Hg(II) was carried out using different electrochemical techniques like cyclic voltammetry(CV), Differential pulse voltammetry(DPV) and Amperometric i-t curve. The modified TACoPc sensor electrode was found to have a good sensitivity of 7.460 μAnM-1 L-1 and a limit of detection (LOD) of 0.47087 nM for Hg(II) was achieved by DPV. The modified composite electrode is highly selective towards Hg(II) without any interference towards interfering ions such as Co(II), Al(III), Mg(II), Ni(II), Pb(II), Cd(II), Sn(II), Mn(II),Cu(II), and Cr(IV) at higher concentrations. The modified TACoPc sensor electrode possessed good stability and reproducibility. The excellent performance can be attributed to the characteristic nanostructure of TACoPc. This electrochemical sensing technique is predicted to expand the scope of electrochemical determination and perform well in the investigation of environmental pollutants.
- 144. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 123 “Influence of Al doping on the physical properties of Zn-CO Nano ferrites” 1. Sunitha,Shivakumar bagal ,S V Angadi, L D Horkeri,R B Pujar,2.C S Hiremath 1.P C Jabin Science College Vidyanagar Hubballi.580031. 2.Shree Kadashidheshwar Arts college and HS Kotambari Science Institute Vidyanagar, Hubballi.580031. ABSTRACT Since from the dawn of civilization, garnets played a key role in microwave applications. Because of their high stress sensitivity, high cost and low Curie temperature, many researchers initiated the study on Li, CO, Mg ferrite groups, due to the low cost, low eddy current losses, high Curie temperature and high magnetization. The spinel structure is physically flexible and leads to a variety of physical properties and hence applications. Ferrites on Nano scale are versatile groups of materials having unique electric and magnetic properties which cannot be achieved by same materials in bulk form. Therefore they are promising materials for energy conversion, energy storage as well as environmental concern, because of their super paramagnetic behaviour. The present work deals with an experimental exercise to investigate the relations between microstructure and physical properties of Al doped Zn-Co Nano ferrites with general chemical formula 𝑍𝑛0.5 𝐶𝑜0.5𝐴𝑙𝑥𝐹𝑒2−𝑥𝑂4 with 0<x<1, using AR grade nitrates, sucrose, PVA in molar proportion, to maintain stoichiometry. X ray diffraction studies confirm the formation of single phase fcc structure, belonging to Fd-3m space group. The shifting of peaks is attributed to the distribution of host elements at A and B sites. The variation in the intensity of peaks with composition is assigned to the capacity of Al ions to dissolve into the spinel lattice. The variation of lattice parameter with dopant obeys Vegard’s law. FTIR studies help to investigate the absorption bands.
- 145. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 124 Photonic Crystal Assisted Surface Enhanced Raman Scattering for the Trace Detectionof Dye molecule Bhavya M. B., and B. V .R Tata Centre for Interdisciplinary Research, GITAM (Deemed to be) University, Visakhapatnam,530045, India Abstract Monolayer photonic crystals consisting of self-assembled silica colloidal particles are created using self-assembly. These crystals serve as a platform for detecting the hazardous dye molecule known as Rhodamine 6G (R6G) through the Surface- Enhanced Raman Scattering (SERS) technique. The silica colloidal photonic crystal monolayer is adorned with gold nanoparticles, synthesized using laser ablation, to enable SERS activity. The outcomes demonstrate that this combination of photonic crystal and gold nanoparticles significantly enhances the detection of trace amounts of R6G molecules using SERS. Electromagnetic simulations were conducted to comprehend the impact of photonic crystals on electric field enhancement, both with and without gold nanoparticles. The findings indicate that placing the gold nanoparticles in the high electric field zone of the silica photonic crystal monolayer furtheramplifies the electric field. This augmentation greatly contributes to boosting the SERS signal,thereby facilitating the detection of minuscule quantities of analyte molecules.
- 146. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 125 𝑟 Palladium and Cobalt complexation via curcumin as a ligand: A novel material for NLO Shakeel Nawaz S. and Dileep Ramakrishna Department of Chemistry, Presidency University, Yelahanka, Bengaluru-560064, INDIA Abstract The present work explores the synthesis of Pd and Co complexes via a simple complexation method where curcumin (Cur) is used as a ligand. The novelty of the work focuses on the outcome of different metal centers on the NLO properties with the same ligand. Here, Co and Pd metals with triphenylphosphine group were made coordinated with Cur, and the two complexes were labeled CoTppCur and PdTppCur. The complex formation was confirmed by different techniques like UV- Vis, FT-IR, NMR, and Mass spectrometry. The paramagnetic nature of the CoTppCur was confirmed by ESR analysis. The nonlinear behavior of the complexes was measured using Z-scan, Differential Optical Kerr gate (DOKG). The NLO coefficient is determined to be −23 and −18 cm/GW for CoTppCur and PdTppCur, respectively. The 𝜒(3) of the compounds CoTppCur and PdTppCur were derived to be 3.2×10-10 esu and 2.8×10-10 , respectively using DOKG.
- 147. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 126 HEA/BaMoO4 composite phosphors: Synthesis, performance prediction and fingerprint recognition Yuanyuan Zhanga) *, Shifa Wanga) a) School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, Wanzhou, 404000, China. E-mail: zyy971218@163.com Abstract: Barium molybdate (BaMoO4) in the scheelite family can be applied as an excellent host crystal for luminescent materials, phosphors conversion light-emitting diodes, optoelectronic devices, anti-interference labeling materials, optical temperature sensors, displays, fluorescent labeling, biological research, photocatalytic degradation of dyes and drugs because of its strong Mo-O bond, wide absorption band, high thermal stability, outstanding physical/chemical stability, relatively low phonon energy, environmentally friendly, high charge transfer and separation efficiency. According to the current known BaMoO4 related studies, it can be found that in the crystal with BaMoO4 as host, most of the rare elements of lanthanide are doped, and doping of excellent host BaMoO4 needs to be carried out at the Ba2+ position. BaMoO4 phosphors doped with different ions of rare earth elements will excite different colors. Rare earth elements doped AMoO4 molybdate (A=Ba2+ , Ca2+ , Pb2+ , Sr2+ ) have a wide range of applications in the preparation of phosphors, so it has potential application prospects in light-emitting diodes and photochemical devices. The introduction of rare earth elements into molybdate can reduce the use of sulfide and nitride phosphors to a certain extent, reduce costs, and reduce the harm caused by volatile, unstable and toxic shortcomings. However, up to now, no correlation has been found with high-entropy alloy (HEA) coupling with the BaMoO4, through the combination of HEA and BaMoO4to construct HEA/BaMoO4 composite phosphors can reduce the use of rare earth elements. On the basis of previous research, our team focuses on the study of HEA/BaMoO4 composite phosphors, mainly in the areas of optical and photoluminescence properties of HEA/BaMoO4 composite phosphors, application in fingerprint recognition, and intelligent algorithms predict photoluminescence properties of HEA/BaMoO4 composite phosphors. In this study, the photoluminescence properties of HEA with different mass ratios of BaMoO4were investigated. By studying the photoluminescence and photocatalytic properties, the correlation mechanism between the two properties was discussed. In the course of
- 148. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 127 previous studies, no fingerprint recognition phosphors with BaMoO4 as the host crystal were found, and BaMoO4/HEA phosphors were first proposed. Under ultraviolet excitation at 282nm, there are two emission peaks at 400and 440nm. Notably, back propagation (BP) neural network model has been widely used to predict the optical properties and photocatalytic activity of semiconductor materials. However, BP neural networks are prone to local minimization and have certain disadvantages in accurate prediction in the global scope. Therefore, the genetic algorithmoptimized BP neural network has been used to predict the photoluminescence properties of HEA/BaMoO4composite phosphors. The results show that the genetic algorithm can avoid abovedisadvantages and thus have more accurate prediction performance. The results of this research will help to synthesize other types of the composite phosphors and open up their applications in the field of fingerprint recognition.
- 149. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 128 FeNi-layered double hydroxide derived bimetallic FeNi-MOFs integrated membrane for the removal of organic dyes K. Gayathri, M. Sakar, * R. Geetha Balakrishna* Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Kanakapura, Bangalore 562112, Karnataka, India. *Email: m.sakar@jainuniversity.ac.in / br.geetha@jainuniversity.ac.in Abstract Organic pollutants and heavy metal contaminations in water represent a major threat to human health. Membrane technology has emerged as a crucial answer to this challenge, allowing for the recycling and reuse of various contaminated water. However, membrane process enables only the separation of pollutants from water and not their degradation. Alternatively, incorporation of photocatalytic materials in membranes could lead to the degradation of pollutants during or post membrane separation. To achieve this,Metal-organic frameworks (MOFs) are one of the high surface area materials employed for various applications. Realizing their ability in photocatalytic applications, MOFs have been used as a host photocatalyst, co-catalyst and supporting material. Therefore, many explorations have been done on varying the metals and ligands in MOFs to tune their photocatalytic properties. In this direction, the metal-precursors and methods used for MOF synthesis play an interesting role in tuning the properties of MOFs, especially when it comes to the bimetallic MOFs. In this context, herein, we have synthesized bimetallic FeNi-MOFs fromFeNi-based layered double hydroxides (LDH) and terephthalic acidas ligands. TheseLDH- derived FeNi-MOFs are studied for their structural, morphological, optical and surface properties and pollutant degradation under direct sunlight irradiation in comparison with FeNi-MOFs synthesized using the respective metal precursors.Then, the D-FeNi MOFparticles are integrated into polysulfone (PSF) membranes by phase inversion method with different wt% ratios and investigated their photocatalytic dye degradation and separation efficiencies. Due to the excellent coordination of the organic moieties with membrane polymers, the MOFs integrated membranes show better performance as compared to the bare. Accordingly, the possible photocatalytic mechanism has been proposed based on the structure-property relationships of MOF- membrane tuned for the effective optimization of their scale up photocatalytic membrane applications.
- 150. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 129 Spinel nickel aluminate (NiAl2O4): Regulates synthesis, photocatalysis, and degradation pathways Xinmao Yua) *, Shifa Wanga) a) School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, Wanzhou, 404000, China. E-mail: yuxinmiao2022@126.com A spinel nickel aluminate (NiAl2O4) with partial inversion was widely used in the fields of electrocatalysis, adsorption and photocatalysis due to its high stability, optical characteristics, excellent electron transfer properties and good electronic structure. In this work, we successfullysynthesize NiAl2O4 nano-powderswith different phase purityby using different metal salts via a polyacrylamide gel method. Subsequently, the phase structure, microstructure, valence state, chemical composition, optical and photocatalytic activity of NiAl2O4nano-powders are studied by a series of advanced characterization methods. The results indicated that the phase purity of spinel NiAl2O4 can be affected by different metal salts during the preparation process. When using Al2(SO4)3·18H2O as aluminum salts and anhydrous NiSO4 and NiSO4·6H2O as nickel salts, the phase structure of NiAl2O4nano-powders are unaffected. However, the phase structure will be changed due to the presence of small amounts of NiO by usingAl(NO3)3·9H2O as aluminum salts and anhydrous NiSO4 and NiSO4·6H2O as nickel salts. Then, the photocatalytic activity of NiAl2O4nano-powders for the degradation of tetracycline (TC) hydrochloride under simulated sunlight irradiation is evaluated by photocatalytic experiments and response surface methodology (RSM). When the concentration of TC solution is 50 mg/L and the concentration of catalyst is 1 g/L, the degradation percentage of pure NiAl2O4 is the highest reaching 86.3%. Meanwhile, the degradation percentage of impure NiAl2O4 is lower than pure NiAl2O4 due to NiO only has a high degradation percentage under ultraviolet light and it inhibits the degradation of TC by NiAl2O4. The RSM results show that the NiAl2O4nano-powders has an excellent photocatalytic activity when the pH value is neutral. If the pH value is adjusted to strong acidity or strong alkalinity, the performance of NiAl2O4nano-powders will be reduced. So the pure NiAl2O4 as an environmentally friendly photocatalyst is helpful to the degradation of TC solution at pH=7. A reasonable degradation pathway was proposed by mass spectrometry and toxicity estimation.
- 151. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 130 Recent Synthetic Routes for the Synthesis of Biologically Active Quinoxalin Derivatives: A Systematic Review Rameshwar R. Magar Department of Chemistry, Sant Dnyaneshwar Mahavidyalaya Soegaon, Dist. Aurangabad. (Maharashtra), 431120, India Corresponding author- rrmagar@gmail.com ABSTRACT: Quinoxalin derivatives are an important class of Nitrogen containing heterocyclic compound. Quinoxalin and its derivatives have attracted remarkable attention due to their wide range of pharmacological activities. They show broad spectrum of biological, medicinal and pharmacological properties. In recent years several synthetic routes have been developed for the synthesis of Quinoxalin derivatives. The current review article consist the various synthetic methods for the synthesis of Quinoxalin derivatives for the period 2010 to 2023. Keywords:Quinoxalin derivatives,Pharmacological activities, Biological activities.
- 152. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 131 Fluorescence Quenching Studies of Nitroaromatics, employing sulphoic acid Doped Polyaniline Parvathi Patila* a*. Department of Chemistry, VG Women’s Degree College, Kalaburagi-585106, India. Email –phbandoji10@gmail.com Abstract: Polyaniline (PANI) was synthesized by chemical oxidation method in the presence of ammonium persulfate as oxidant and para toluene sulfonic acid (PTSA) and Benzene Sulhonic Acid (BSA) as dopant. In this study, fluorescence characteristics of polyaniline doped with PTSA andBSA in Dimethyl sulfoxide (DMSO) solvent is undertaken. The successful demonstration through fluorescence quenching of PTSA-PANI andBSA-PANI with NACs is envisaged with Dimethyl sulfoxide (DMSO) as solvent. The detection of quencher met dinitrobenzene and Para nitro aniline is studied through the observed intense quenching of fluorescence signals in the emission spectra of the PTSA-PANI aNd BSA-PANIsolution. Keywords: polyaniline,Fluorescence,Quenching,Sulfonic acids,Nitro aromatics.
- 153. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 132 Orthogonally polarizeddiversified UWBMIMO antenna with on- demand 5G-n77/n78 band rejection characteristics Premavani1 , B. Satyanarayana2 and S. N. Mulgi3 1,3 Department of PG Studies and Research in Applied Electronics, Gulbarga University, Kalaburagi, Karnataka, India. 2 Department of Electronic Science, Bangalore University, Bangalore, Karnataka, India. 3 Department of PG Studies and Research in Physics, Sharanabasava University, Kalaburagi, Karnataka, India Abstract: This paper presents a compact single band-notched UWB MIMO antenna featuring innovative V-shaped edge-cut ground pentagon microstrip patches connected to a 50-Ω microstrip feedline. A single V-shaped slot creates a notched response, rejecting 5G n77/78 signals from 3.2 to 4.2 GHz. The antenna's dimensions are 59 × 34 × 1.6 mm³, providing an impressive impedance bandwidth of 3 to 10.7 GHz. MIMO performance evaluation demonstrates superior isolation (< -15 dB) and an envelope correlation coefficient (< 0.1) across the frequency range. Additionally, the antenna exhibits a diversity gain of nearly close to the ideal value of 10, with a peak gain of about 3-5 dBi, and a total efficiency reaching nearly 90%, showcasing exceptional performance. The antenna's high-performing and compact design holds promise for portable UWB applications. Keywords: Multiple-input multiple-output (MIMO) antenna, Mutual coupling, Ultrawideband (UWB) antenna, ECC, DG, Diversity, MEG, TARC.
- 154. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 133 Structural, optical and electrical properties of TiO2 thin films prepared by thermal oxidation of Ti films deposited using E-beam evaporation Nisha Mahepal1 , Ridhi mahepal1 , Trilok Kumar Akhani1 , Mahendra Singh Rathore1* 1 Faculty of Applied Science (Physics), Parul University Vadodara, Gujarat 391760, India *Corresponding author- mahendra.rathore8944@paruluniversity.ac.in Abstract In the present work, the effects of thermal annealing on the microstructure, optical, and electrical properties of TiO2 thin films have been investigated. Titanium (Ti) thin films were deposited on to silicon and quartz substrate at 100°C using electron beam evaporation technique. Eventually as-deposited films were annealed in air for 2 hours at various temperatures ranging from 600° to 800°C. Subsequently as deposited and annealed samples were characterized using X-ray diffractometer, UV- Visible-NIR spectroscopy, and Hall measurements. The XRD results reveal that the formation of TiO2 films exhibit with anatase phase after thermal oxidization of Ti thin films. The transmittance increases with annealing temperature and observed highly transparent in visible region. Optical band gap is observed around 3.2eV for the film thermal oxidized at 800°C. It was also observed that the optical transmittance and the band gap of the films increases with an increase in annealing temperature. Charge concentration and mobility of the films have been analyzed using Hall measurements. The possible mechanics of the formation of TiO2 thin films and effects of annealing on the structural, optical, and electoral properties of TiO2 thin films have been discussed in details. Keywords: - TiO2 thin films, Thermal annealing, Transmittance, Optical band gap. Hall measurements
- 155. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 134 A Review on antimicrobial activity of doped zinc oxide nanoparticles. Preeti M1. Sheela Gandhad2 1Govt First Grade College, Haliyal. 2P.C.Jabin Science College Hubballi. Abstract: Since ancient times diseases have been a threat to human beings which are mainly caused and spread by microorganisms like bacteria, viruses and fungi. Despite the fact that there are numerous antibacterials available in the market, research is still being done to create new chemical agents that are known as antibacterials in order to best combat this threat. Nanoparticles have the ability to kill bacteria, making them an effective substitute for traditional medications. Doping can enhance the physical, chemical and antimicrobial properties of nanoparticles, therefore it is important to know and understand antimicrobial effects of synthesized nanoparticles. Metal oxide nanoparticles are potential candidate for making future antimicrobials. Increased interest is due to change in fundamental properties at nanoscale. Doped zinc oxide nanoparticles were proved to be active future pharmaceutical and biomedical agents. The objective of this review is to present a relative analysis of doped zinc oxide nanoparticles that reveal promising antibacterial activity
- 156. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 135 A theoretical DFT/HSE06 investigation of metallic doping Nb, Fe and Ni doping in MgB2 material and effect on crystalline and electronic structure. Guilherme Bonifácio Rosa1 , Sérgio Ricardo de Lázaro1 , Luis Henrique da Silveira Lacerda2 1 Universidade Estadual de Ponta Grossa (UEPG), 2 Universidade Federal de Santa Catarina email:gbonifacioros@gmail.com / srlazaro@uepg.br Abstract The MgB2 compound finds extensive use in superconductor research and electronic device development. Literature documents the modification of this material through the introduction of transition metals at the Mg site. This includes employing MgB2 for cost-effective fabrication of superconductor wires, showing promise for electronic and magnetic resonance device applications. The material's hexagonal P6/mmm space group provides adaptability for alterations involving transition metals at the Mg site [1]. Computational simulations conducted in this study utilized the DFT/HSE06 methodology within the CRYSTAL17 software, complemented by the VESTA viewer. Specific Gaussian basis sets were assigned to Mg, B, Ni, Fe, and Nb atoms, denoted as 8-511G, m-6-311G(d), TZVP, s8411p6411d441, and 986-31(631d)G, respectively. The material Mg0.875X0.125B2 (where X = Nb, Fe, and Ni) was modeled within a 2x2x2 supercell, focusing on the Mg site. Investigation of the electronic characteristics relied on the analysis of Electronic Band Structure (EBS) and Density of States (DOS). Comparison of quantum simulations for MgB2 with literature's reported cell parameters (a = b = 3.073 Å and c = 3.553 Å) confirms its robust crystalline structure calculated. The introduction of Ni, Fe, and Nb dopants causes minor distortions in the a and b parameters, while a significant distortion occurs in the c parameter. Specifically, Nb, Ni, and Fe doping leads to a contraction in the c parameter, indicating layer approximation. Examination of the Electronic Band Structure reveals that the presence of magnetic cations in Fe and Ni-doped materials induces the formation of a Dirac Cone in the beta channel at symmetry point A. In contrast, the Dirac Cone appears in both the alpha and beta channels at Г and A points for Nb- doped material. Furthermore, the Dirac Cone profile is more pronounced in Fe and Ni-doped materials, with clearer intersection points among the Bands.
- 157. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 136 DFT quantum simulation on the magnetic states in the SrFeO3 material Guilherme Bonifácio Rosa1 , Sérgio Ricardo de Lázaro1 , Luis Henrique da Silveira Lacerda2 1 Universidade Estadual de Ponta Grossa (UEPG), 2 Universidade Federal de Santa Catarina email:gbonifacioros@gmail.com / srlazaro@uepg.br Abstract The Goodenough-Kanamori-Anderson model(GKA) [1], characterizes electronic superexchange, illustrating how magnetic coupling between two magnetic sites occurs through a non-magnetic barrier like an oxygen (O) atom. Understanding this behavior in a Pm-3m cubic crystallographic arrangement presents a challenge. To address this, DFT quantum simulations using the HSE06 functional were performed within the CRYSTAL17 software. Gaussian basis sets, namely HAYWSC- 311(d11f)G, 86-411d41G, and 8-411d11G, were utilized to describe Sr, Fe, and O atoms respectively. A supercell of size 1x1x2 was constructed to investigate the magnetic ordering on the [Fe-O-Fe] connection within two [FeO6] magnetic clusters, both in ferromagnetic (FM) and antiferromagnetic (AFM) configurations, while considering the presence of an oxygen vacancy (Vo) as a perturbation. Electronic profiles were evaluated through analysis of the Electronic Band Structure (EBS) and Density of States (DOS). Comparing the structural data with experimental literature [2], the crystalline structure displayed lattice parameters consistent with prior findings. Magnetic ordering in the simulated SrFeO3 (SFO) structure matched the literature, where an AFM magnetic ordering was reported. Upon introducing the Vo perturbation to create SFV material, it was observed that the Vo preserved the AFM ordering. The EBS indicated metallic behavior for the SFO material, while the SFV material exhibited semiconductor characteristics due to the Vo presence. The interaction between these electronic states, characterized by an overlap, revealed a significant intermetallic bond interaction. This interaction could be understood as a molecular path for the GKA model. In both SFO and SFV materials, an intense superexchange effect between Fe atoms occurred, facilitated by the O non-magnetic atom serving as a bridge to link the two magnetic clusters.
- 158. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 137 A REVIEW ON SYNTHESIS OF BOROPHENE: A NANOPARTICLE WITH ENDLESS POSSIBILITIES Suvodip Mukherjee1* , Harikrishna S2 1 Assistant Professor, Department of Chemistry, Sri Sairam College of Engineering, Bangalore 2 Professor& Head, Department of Chemistry, Sri Sairam College of Engineering, Bangalore * Corresponding Author Email: suvodip.m@hotmail.com Abstract: Boron, an element that is situated between non-metals and metals in the periodic table and is adjacent to carbon, is one of the most versatile elements in terms of its chemical and physical properties. It can be manipulated to form low- dimensional planar structures known as borophene, which possess fascinating properties. This article reviews the theoretical research and experimental progress in the synthesis of borophene.Over the past decade, significant efforts have been made to understand the size-dependent structures of boron clusters and to develop theory- directed approaches for the synthesis of borophene. These approaches include bottom- up methods based on different foundations and top-down methods using various exfoliation modes. The key factors that influence the synthetic outcomes are also discussed in detail.Due to its exceptional chemical, electronic, mechanical, and thermal properties, borophene has shown great potential for use in supercapacitors, batteries, hydrogen storage, and biomedical applications. In particular, borophene nanoplatforms have been used for bioimaging, drug delivery, and photonic therapy.
- 159. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 138 Antioxidant Activity of Diaryl Sulfides and Sulfoxides Efficient Synthesis, Characterization, Antimicrobial and Antioxidant Activityof Stable Diaryl Sulfides and Sulfoxides Devappa S. Lamani*a a Department of Chemistry, Prof. CNR Rao Research Center, Basaveshawar Science College,Bagalkot, Rani Channamma University, Karnataka, India Email: kattimani.devaraj67@gmail.com Abstract: Efficient synthesis, characterization, antimicrobial and Antioxidant activity of stable diaryl sulfides and sulfoxides are described. In addition to synthesis, characterization and mechanistic studies, the glutathione peroxidase(GPx) mimetic activity and antimicrobial activity of the newly synthesized compounds is discussed. The substituents attached to the phenyl ring play an important role in the catalytic activity of the substituted diaryl sulfides and sulfurane oxides. It is observed that the introduction of electron withdrawing groups such as –Cl, –Br, -CF3 etc to the phenyl ring decreases the activity whereas, the foreword of electron donating groups such as–OH, –OMe –NO2 –CO2H significantly enhances the GPx activity of diaryl sulfides. The obtained outcome shows that the antimicrobial activity all the synthesized compounds exhibits significantly when it contrast with standards. The obtained data ropes for the superior antioxidant activity and antimicrobial activity of diaryl sulfides than that of the corresponding sulfoxides.
- 160. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 139 Synthesis of ultralong Cr doped Ge Nanowires for room temperature ferromagnetic properties By Amar S. Katkar, Dr. Pravin Walke 1 Dr. B. N. Purandare Arts, Smt. S. G. G. Commerce and Smt. S. A. M. Science college, Lonavala-410403, (MS), India) 2 National Centre for Nanosciences and Nanotechnology, University of Mumbai Abstract: Synthesis of ultralong, low diameter (High aspect ratio) and uniform nanowires could be useful for integration of multiple devices using one nanowire. In the present work simple vapor transport method was used to synthesize ultralong Cr- doped Ge nanowires. The conditions such as substrate temperature, precursors and required dopants were optimized for the growth of uniform ultralong Germanium nanowires. After characterizations the as prepared samples were utilized to investigate ferromagnetic properties. The ultralong Cr-doped Ge nanowires could be very useful in future for the fabrication of electronic and biological devices. Keywords: Longest nanowire, Germanium nanostructure, Core-Shell
- 161. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 140 Syntheses of MnO2 thin film by Electrodeposition method Arpana Ekanath Kore*1 , Ekanath Khandu Kore1 and RameshNamdevMulik1 1 Dept. of Physics, D.B.F. Dayanand College of Arts & Science, Solapur, MS, India. *Corresponding Author: drarpanakore@gmail.com Abstract Our work is centered on the electrodeposition approach for the fabrication of stable nanostructured MnO2 thin film electrode material (For supercapacitor applications). The following conditions were used for the synthesis: 0.1, 0.5, 1 and 1.5 mol of each of the four precursor concentrations; 20 min of deposition duration; and annealing at 5000 C in the heating Furness for each specimen. Utilizing characterisation methods including XRD and FESEM, the generated materials were verified. There are basically four different forms of MnO2, namely α-MnO2, β-MnO2, γ-MnO2, and δ-MnO2. As evidenced by JCPD Card No. 44-0141, WE have prepared γ-MnO2 in this instance. FESEM for various parameters was investigated. Keywords: α-MnO2, Electrodeposition method, XRD, FESEM, Supercapacitor.
- 162. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 141 Chemistry and Pharmacological Applications of Benzimidazole and its Derivatives Sandeep Sontakke* Lonavala Education Trust’s Dr. B.N. Purandare Arts, Smt. S.G. Gupta Commerce and Smt. Shardaben Amrutlal Mithaiwala Science College, Lonavala-410403 (M.S), India Email id: drsgsontakke@gmail.com Abstract: Benzimidazole is a heterocyclic aromatic organic compound with significant importance in medicinal chemistry as a pharmacophore and privileged structure. Its therapeutic potential was identified as far back as 1944, and it holds a pivotal role in the world of heterocyclic systems due to its presence in a diverse array of bioactive compounds. These incorporate a wide spectrum of functions including antiulcer, antihypertensive, analgesic, anti-inflammatory, antiviral, antifungal, anticancer, and antihistaminic properties. Extensive literature reviews underscore the remarkable efficacy of benzimidazole derivatives, with numerous evaluations dedicated to their biochemical and pharmacological attributes, validating their utility against an extensive range of microorganisms. Given its vital biological significance, this current review strives to integrate distinct derivatives of substituted benzimidazole that showcase their noteworthy biological implications. Key words: Benzimidazole, therapeutic potential, biological significance; heterocyclic compound.
- 163. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 142 A Comprehensive Review on Biological Significance of Fused- Benzimidazoles Sandeep Sontakke* Lonavala Education Trust’s Dr. B.N. Purandare Arts, Smt. S.G. Gupta Commerce and Smt. Shardaben Amrutlal Mithaiwala Science College, Lonavala-410403 (M.S), India Email id: drsgsontakke@gmail.com Abstract: Benzimidazole is a heterocyclic aromatic organic compound with significant importance in medicinal chemistry as a pharmacophore and privileged structure. Its therapeutic potential was identified as far back as 1944, and it holds a pivotal role in the world of heterocyclic systems due to its presence in a diverse array of bioactive compounds. These incorporate a wide spectrum of functions including antiulcer, antihypertensive, analgesic, anti-inflammatory, antiviral, antifungal, anticancer, and antihistaminic properties. Extensive literature reviews underscore the remarkable efficacy of benzimidazole derivatives, with numerous evaluations dedicated to their biochemical and pharmacological attributes, validating their utility against an extensive range of microorganisms. Given its vital biological significance, this current review strives to integrate distinct derivatives of substituted benzimidazole that showcase their noteworthy biological implications. Key words: Benzimidazole, therapeutic potential, biological significance; heterocyclic compound
- 164. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 143 Optimization of friction stir welding parameters for the maximum electrical conductivity of Al-Cu butt joints using Taguchi approach Pratap Kumar J1 *, Anil Raj1 Department of Mechanical and Automobile Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bengaluru, Karnataka, 560074. Corresponding author:2anil.raj@christuniversity.in Abstract In this research, the 5 mm thickness of base metals AA6101 and C11000 were welded by the FSW process using a hardened OHNS steel tool. The Taguchi approach comprises optimizing welding process parameters such as tool rotational speed (rpm), feed rate (mm/min), and tool offset (mm) to get high conductivity in Al-Cu joints. The ANOVA shows the percentage contribution of the three welding process parameters. According to the Taguchi approach of optimization technique, the maximum electrical conductivity will be at 800 rpm, 50 mm/min, and tool offset towards softer metal. The tool rotational speed had the most significant percentage effect on electrical conductivity. Keywords: Friction stir welding; Hardened OHNS steel tool; Electrical Conductivity
- 165. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 144 Synthesis and characterization of thermally stable second-order nonlinear optical side-chain polyimides containing Y shape push–pull chromophores. Ranjith Gowda P. B.a and M.Y. Kariduraganavar a, * a, Department of Chemistry, Karnatak University, Dharwad 580 003, India E-mail address: pbrgoudar@gmail.com Abstract: The quest for advanced materials with exceptional nonlinear optical properties has led to significant research in the field of polymeric materials containing tailored chromophores. This study presents a comprehensive investigation into the synthesis and characterization of thermally stable second-order nonlinear optical (NLO) side- chain polyimides. The unique structural design incorporates Y-shaped push–pull chromophores, known for their enhanced NLO response due to efficient charge transfer characteristics. The synthesis process involves careful selection of high- temperature stable polyimide backbones, ensuring robust thermal and mechanical properties essential for practical applications. Functionalization of the polyimide backbone with Y-shaped push–pull chromophores is achieved through a facile yet precise synthetic route, allowing for tuneable control of chromophore density within the polymer matrix. The thermal stability of the resulting polyimides is systematically will be investigated using Thermal Gravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). The presence of Y-shaped chromophores does not compromise the thermal integrity of the polyimides, demonstrating their potential for use in high-temperature environments. Characterization of the synthesized polyimides includes detailed studies of their optical properties, such as UV-Vis absorption and Fluorescence spectroscopy. The second-order NLO properties will be investigated through Electric Field-Induced Second Harmonic Generation (EFISH) measurements. The Y-shaped push–pull chromophores contribute to a notable enhancement in the second-order NLO response, making these polyimides promising candidates for photonic and optoelectronic applications. Keywords: NLO chromophores, Polyimides, Thermal stability.
- 166. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 145 Synthesis, structural and luminescence studies of Graphene Oxide. Vijay Kumar R1 , H. J. Amith Yadav1, a) , Sushma Katti1 , V.S. Veena1,2 , Pooja Raj B N1 and Chethan K S1 1 Department of Studies in Physics, Davangere University, Davangere 577007, India. 2 Department of Physics, Government First Grade College, Koratagere, India .a) Corresponding author: amithyadavhj@gmail.com Abstract: The present study reveals a simple and efficient method for the synthesis of graphene oxide (GO). PXRD confirmed the analytical aspects of synthesized samples. The band gaps of prepared samples were estimated by UV–Vis analysis. PL quenching appears due to the interaction between the surface of the GO sheets. The photoluminescence analysis indicates the green component in display applications. Keywords: graphene oxide ,display applications
- 167. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 146 Click approach for synthesis of 1-(4-(2,3-dichlorophenyl)piperazin- 1-yl)-2-(4-(phenoxymethyl)-1H-1,2,3-triazol-1-yl)ethenone derivatives as potent antimicrobial and antioxidant agents. Chudamani R Savajjera, Dr.L.A.Shastri Department of chemistry Karnatak University Dharwad chemilok@gmail.com, chudamanisavajjera@gmail.com Abstract A series of (prop-2-ynyloxy)benzene-1,2,3-triazole-piperazine hybrids have been synthesized using 2-azido-1-(4-(2,3-dichlorophenyl)piperazin-1-yl)ethenone and aryl propargyl ethers employing Click chemistry modified protocol for Azide -Alkyne Cyclo addition using copper sulphate (CuAAC)Anti-microbial activity of the synthesized compounds determined by resazurin based micro-broth dilution method against Bacillus subtilis (MTCC 13343), Staphylococcus aureus (ATCC 6538), Escherichia coli (ATCC 10799), Pseudomonas aeruginosa (ATCC 27853), Candida albicans(ATCC 24433), Aspergillus niger(ATCC 16888) and showed moderate activity. Antioxidant activity was also examined and showed good activity.
- 168. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 147 WLED’spreparation of iron doped cadmium silicate nanophosphor Dr. Manohara. B. M. Department of Physics, Government First Grade College, Davangere-577004, India. E-mail:manoharabm1@gmail.com Abstract Nanoparticles of (1-9 mol %) Iron doped cadmium silicate nanophosphor were synthesized by the self-propagating solution combustion technique at low temperature at 8000 C. The synthesized materials was characterized by powder x-ray diffraction (PXRD) results revealed the formation of highly crystalline nanophosphor with monoclinic phase having an average particle size was estimated using Debye- Scherer’s formula, Williamson–Hall (W–H) plots and was found to be ~ 38 nm and strain was measured to be 1.68× 10-3 . The scanning electron microscope (SEM)images showed porous in nature and irregular shaped particles. Fourier Transform Infra-red spectroscopy (FTIR) and Raman spectroscopy were recordedto investigate the nature of the chemical bonds. The absorption coefficients were calculated from the optical UV-Visible spectroscopy. The energy band gap (Eg) of the samples was estimated using Wood and Tauc relation and found to be 5.4 eV.Hence prepared material is an insulator. Photoluminescence (PL) studies show an intense emission peak 3 mol % at 715 nm when excited at 361 nm. The chromaticity co- ordinates and Correlated color temperature of the phosphors were well located in red region. Therefore, the present phosphor was highly useful for WLED’s and Solid state display applications. Keywords: Nanophosphor; Combustion technique;Photoluminescence;
- 169. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 148 Crystal structure and luminescence investigations on Tamarindusindica-assisted green synthesis of CeO2 nanoparticles. B.S.Rohini1 ,Nandan K R1 , Maruthi N1 , Midhunlal P V2 1 Department of Physics, Faculty of Engineering and Technology, JAIN University, Bangalore 562112, India 2 Department of Sciences and Humanities, School of Engineering & TechnologyChrist (Deemed to be University)Bangalore-560074, India *Corresponding author Email:rohinigowali@gmail.com (Dr.ROHINI BS). Abstract: Here we report green synthesis of CeO2 NPs via solution combustion synthesis using Tamarindusindica Fruit extract as Fuel. Structural characterization was done using Powder x-ray diffraction (XRD) and Rietveld refinementwas run by using Fullprof.2K version 2.1 software.The cubical fluorite structure of the synthesized CeO2 is confirmed from Rietveld refinement with the space group Fm-3m(No.225). Whereas the TEM image shows the truncated octahedral structure for the calcined sample. A band gap is determined using Uv-vis absorption techniques,The Determined band gap is in the range 3.37 – 3.80 eV for as-formed CeO2 and for calcined at 800 O C ranges from 2.9 to 3.39eV, chemical bonding is determined using Fourier infrared spectroscopy, emission spectra is observed using Photoluminescence. The crystallite size ranging from 3.9nm – 34nm was observed as varying the fuel concentration from 5ml-25ml. Keywords:Tamarindusindica,UV-vis absorption, XRD, Rietveld refinement.
- 170. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 149 Synthesis and investigation of Polyaniline-fly ash nano-composites via chemical oxidative polymerization technique Ramya Ra,b* , Jahnavi Va , Pushpa Nc andMahendra Ka a Department of Applied Science, Reva University, Bangalore b Nagarjuna Pre-University college, Yelahanka, Bangalore c Department of Physics, SJC Institute of Technology, Chickballapur. *Email: ramyavvip@gmail.com Abstract: The polyaniline (PANI)/fly-ash nanocomposites were synthesized using in- situ chemical oxidative polymerization of aniline at ambient temperature. X-ray diffraction of the composite revealed two distinct crystalline peaks at 20.9° and 26.2° (2θ) which can be attributed to the formation of PANI. The structural changes due to the Fly ash content reflected in small shift in the peak positions. Further, the morphological studies of the composites were investigated using FESEM micrographs. The optical parameters were investigated for PANI, PANI/nano-fly ash composite using UV-Vis absorption measurements. The measured results revealed a strong absorption peak at 266 nm and 374 nm, which can be explained due to the charge transfer excitation of the quinoid structure. The PANI/nano-flyash composite revealed clear similarity in their UV–vis spectra particularly with the presence of the absorption maxima at 266and 376 nm, which is associated with the stabilization of the composite. Key words: Polyaniline; Fly ash; composites.
- 171. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 150 Comparative Analysis of the Impact of the Powder Metallurgy and Compo-casting Processing Routes for Fabricating Aluminium Alloy Reinforced with Nanoparticles Shijo Thomasa , RameshaKa , Darshan S Ma a Department of Mechanical Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bangalore, 560 074, India. Abstract: Metal matrix composites based on aluminum were developed for light weightapplications particularly in aerospace and automobile sector. Some of the main propertiesor advantages of this is excellent thermal electrical conductivity, high strength toweight ratio and cost-effectiveness. Although lots of attentions are required to overcomethe drawbacks like poor tribological performance, low strength, hardness and corrosionresistance, these problems can be solved by the inclusion of nano reinforcement whichhelps in enhancing mechanical and tribological property. But the processingof nano reinforced composites is still remaining as a challenge for researchers. Thepresent research focuses on preparation of Aluminum alloy (7050) metal matrix compositeswith nano sized h-BN (Hexagonal Boron Nitride) by compo- casting and powdermetallurgy (PM) and analyses the formation of the interfacial reactions between matrixand reinforcement at high volume fraction of reinforcement.A significant improvement of 24.6% in tensile strength and 15.72% increase in thecompressive strength and 161% increase in the impact energy was observed by reinforcingwith 2wt% of hBN.There were no significant differences in the hardness of the samples. Even though anenhancement in the tribological properties was observed. Keywords: Metal Matrix Composite (MMC), Aluminum alloy (7050), Powder Metallurgy(PM)
- 172. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 151 Precipitation kinetics acceleration in Spark plasma sintered MWCNT reinforced AA2219 alloy Shijo Thomasa , Anil Raja a Department of Mechanical Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bangalore, 560 074, India. Abstract Heat treatable aluminium alloys have been used extensively in aerospace and it is expected to add value to find the effect of MWCNT on precipitation hardening of aluminium alloys. Aging behaviour of MWCNT composites was done using the Spark Plasma Sintering (SPS) consolidated samples. It is observed that precipitation is accelerated by the MWCNT reinforcement. This research describes the effect of precipitation hardening on the microstructure and mechanical properties of AA2219 with varying MWCNT concentration and varying aging time. Reinforced AA2219 achieved 121 HV (51% improvement) in 10 hours, whereas received alloy has achieved 143 HV just in 1.5 hours; which is 13% more and one by sixth of time. AA2219 with 0.75 wt. % MWCNT on 90 minutes aging on shows 87% improvement over the maximum hardness achieved by all other composites. Keywords: Metalmatrix composites, Multi wall carbon nanotubes (MWCNT), powdermetallurgy, Spark Plasma Sintering, Heat treatment, Aging.
- 173. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 152 High-performance Mg hybrid composites using upgraded Squeeze Casting, and study the significance of Al2O3 and carbon fiber in Mg matrix. Shijo Thomasa , Francis Xavier La a Department of Mechanical Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bangalore, 560 074, India. Abstract: The demands of energy conservation and reduced pollution in automotive can be fulfilled by lightweight metals with superior machinability and structural integrity.Recent decades show a significant progress in developing magnesium composites reinforced by nanoparticles. Addition of nanoparticles not only exhibit an improved strength, but also maintain the ductility, toughness and improved corrosion and wear resistance. The magnesium matrix nanocomposites with improved mechanical properties have rapid the development of Mg matrix composites to a new level. Fabrication of Mg MMNCs is a rigorous due to the high reactive nature of Mg during the cast processing and also to achieving a uniform dispersion of nano particles. In the present research focus on the influence of alumina (Al2O3) and carbon fiber on the mechanical properties of magnesium is analyzed. Accordingly, present research focused on the new compo casting technologies for achieving a uniform dispersion, deformation behavior, mechanical, metallurgical and tribological properties of magnesium with respect to varying particle and fiber reinforcement.It was observed that the casted sample containing 5 wt% of Al2O3has a 6.85% increase in micro- hardness, a 69.6 % increase in compression strength and a 25 % increase in impact energy when compared to pure Magnesium. Were sample containing 5 wt % of carbon fibre shows a reduction of 10.4 % in micro hardness, a 54.5 % increase in compression test and a 107.5 % increase in the impact energy when compared with pure Magnesium. Keywords: Magnesium, Alumina (Al2O3), Carbon Fibre(CF)
- 174. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 153 Thermal control of the characteristics of Ho- modified BiFeO3in the microwave range Astafiev P.A.1 , Andryushin K.P.1,2 ,PavelkoA.A., ReznichenkoL.A.1 1 Research Institute of Physics, Southern Federal University, Russia 2 Kh. Ibragimov Complex Institute of the Russian Academy of Sciences (CI RAS), Russia astafev@sfedu.ru BiFeO3 refers to multiferroic materials that exhibit both ferroelectric and magnetic orderings.This composition shows promise for use in ferroelectric memory devices.Recently, several research groups have been studying the microwave- absorbing properties of BiFeO3, as well as its potential application in tuning microwave devices.However, a potential practical application is impeded by the presence of a spin-modulated structure, which greatly diminishes the magnetization magnitude of this material.To overcome this drawback and improve microwave absorption, different techniques are employed, one of which involves modifying BiFeO3 with various ions of rare earth elements.When modifying, much attention is paid to the dependence of the properties of this multiferroic material on temperature, as it determines the stability of characteristics within specific temperature ranges.Thus, the purpose of this study was to determine the patterns in the development of macroresponses in doped Ho BiFeO3 within the microwave frequency range, as well as to explore the potential for controlling its parameters through thermal action. The objects of study were solid Bi1-xHoxFeO3with x= 0.00….0.20, ∆x=0.05.The measurement samples are made in the form of a cylinder with a diameter of Ø10 mm and a height of 1 mm.Radiophysical studies in the temperature range Т= (300…503) K and frequencies f= (8.2…12.4) GHz were carried out in a waveguide measuring cell using a P9375 “Keysight” vector network analyzer. It has been found that at room temperature, maxima are formed in the absorption coefficient of BiFeO3 SS at f ~8.7 GHz and ~ 10.3 GHz. As the temperature increases, the peaks of the loss factor for the measuring sample shift towards lower frequencies, and their intensity increases.When cooling, the studied characteristics return linearly to their original values, assuming there is no hysteresis in the dynamics of these processes. In addition, the introduction of holmium causes a gradual shift of the maxima found at T=300 K to the low-frequency region. It should be noted that the temperature has a similar effect on samples containing a modifier as observed in pure BiFeO3.The data obtained must be taken into account when designing such materials, as well as devices based on them.
- 175. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 154 DIELCTRIC PROPERTIS OF PANI/Fe2O3/ZnO AND ITS POLYMER NANO COMPOSITES EKNATH NIVRTIRAO, VEERESH RAMPURE AND BASAVARAJA SANNAKKI Department of Physics, Government First Grade College, Naubad Bidar - 585 402 Department of Electronics, Government First Grade College, K R puram Bangalore - 560 036, Department of Post Graduate Studies and Research in Physics, Gulbarga University,Kalburgi -585 106, India Abstract: The dielectric properties and AC conductivities of PANI/Fe2O3/ZnO composites for different thicknesses of sample and for various weight percentages have been studied as a function of frequency over the range 5 Hz – 35 MHz at room temperature. The characterizations for crystallinity of PANI, Fe2O3 and ZnO powder and its composites have studied using XRD. Poly aniline and its composite of Iron Oxide-ZnO at different weight percent have been synthesized by in situ polymerization using chemical oxidation method. The XRD spectrum for the composite of polyaniline with Iron Oxide-ZnO reveals that the composite is crystalline in nature. The peak positions differs from the Fe2O3 compared to that of PANI/ Fe2O3 composite and this indicates the occurrence of modification in the structure of the composite. The values of dielectric constant and dielectric loss have been increased as weight percent of Fe2O3 –ZnO decreased at lower frequency region. A remarkable increase is observed in AC conductivity after the doping of Fe2O3-ZnO the size of the particle is in nanometer range which can found by the XRD. Key Words- XRD-Characterization dielectric constant, dielectric loss, AC conductivity.
- 176. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 155 In vitro antibacterial activity of green synthesized Ag nanoparticles using Vinca rosea leaf extract DayanandLalasangia,b, S. M. Hanagodimathb, Mangesh S. Jadhavc, VadirajB.Tangodd , GulamnabiVantie a Department of Physics, Government First Grade College, Dharwad, Karnataka, India b Department of Physics, Gulbarga University, Kalaburagi, Karnataka, India c Department of Physics, J S S Arts, Science and Commerce College, Gokak, Karnataka, India d Department of Physics, Government First Grade College for Women, Dharwad, Karntaka, India e Multi-Disciplinary Research Unit, Karnataka Institute of Medical Sciences, Hubballi, Karnataka, India a Corresponding author email:dayanandlalasangi@gmail.com Abstract Metallic environment friendly nanoparticles of silver have been prepared by green method using Vinca rosea leaf extract helped for better capping and sustainable. The Ag nanoparticles have showed Surface Plasmon Resonance maxima (SPR) at 420 nm. Scanning electron micrograph (SEM) has shown monodispersed particles in the range of 30 nm sizes. The vinca rosea leaves capped nanoparticles have exhibited interesting antibacterial activity with both gram-positive and gram-negative bacteria at micromolar concentrations. The optical, structural, morphological, elemental composition and size of synthesised nanoparticles were studied. The surface morphology is found to be spherical and has a crystalline phase. The data were compared with SEM, XRD, and TEM analyses. Further, the antibacterial activity, anti-cancer, anti-diabetic, anti-microbial, anti-oxidant property, anti-helminthic, anti- ulcer, hypotensive, anti-diarrheal, wound healing, and hypolipidimic activity of Vinca rosea reduced nanoparticles reveal that they are highly potent agents for Gram- positive and Gram-negative bacteria. This synthesized Ag nanoparticles act as potent agent in biological applications and shown excellent activity. Keywords: Antibacterial activity, Biosynthesis, E.Coli, S. Aureus, Vinca rosea.
- 177. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 156 Impedance, magnetodielectric and magnetoresistive properties of YbMn1-xFexO3 Zhengyou Li*1 , Kamaludin Abdulvakhidov1 ,V. Jagadeesha Angadi2 , Abeer Alshoekh1 , Bashir Abdulvakhidov3 , Marina Sirota1 , Ivan Dmitrenko1 1. Southern Federal University, Sladkova 178/24, Rostov-on-Don, 344090, Russia 2. P.C. Jabin Science College, Hubballi, 580031, India 3. Dagestan State University, Gadgieva 43-a, Makhachkala, 367000, Russia *Corresponding author. chl@sfedu.ru Abstract This paper summarizes findings related to the impedance, magnetodielectric and magnetoresistive properties of YbMn1-xFexO3 composition at varying temperatures, frequencies, and mechanical activations.The complex impedance, characterized by Z′(ɷ) and Zʺ(ɷ), exhibits distinct trends: Z′(ɷ) decreases monotonically with frequency, converging into a linear trend at higher frequencies.The temperature dependence of the fitting parameter Rg displays an intriguing exponential non-Debye behavior, diminishing with increasing temperature. Upon raising temperature and frequency, Z′(ɷ) of YbMn1-xFexO3 is suppressed, coalescing into a single linear curve within the 103 -105 Hz frequency range. The dependence of Zʺ(ɷ) follows a relaxation pattern. We also explores the magnetodielectric (MD(ω)) and magnetoresistive (MR(ω)) coefficients of nanostructured YbMn0.3Fe0.7O3 and YbMn0.5Fe0.5O3 in alternating current under crossed and parallel electric and magnetic fields (E and H). Interestingly, the curve shapes are highly influenced by the quantity of magnetic field cycles (-H↔+H). Furthermore, upon repeated cycling, MD(ω) and MR(ω) dependencies exhibit mirror symmetry, indicating a magnetoresistive origin for the magnetodielectric coefficient MD(ω). This study contributes valuable insights into the intricate electrical and magnetic properties of YbMn1-xFexO3 compounds and their responses to various external influences. Keywords: Impedance, Magnetodielectric, Magnetoresistive, YbMn1-xFexO3
- 178. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 157 Dielectric Properties of Nanostructured YbFeO3, Yb3Fe5O12and YbMn1-xFexO3 Zhengyou Li*1 , Kamaludin Abdulvakhidov1 , Abeer Alshoekh1 , Bashir Abdulvakhidov2 , Marina Sirota1 , Ivan Dmitrenko1 1. Southern Federal University, Sladkova 178/24, Rostov-on-Don, 344090, Russia 2. Dagestan State University, Gadgieva 43-a, Makhachkala, 367000, Russia *Corresponding author. chl@sfedu.ru Abstract This paper presents a comprehensive study of the dielectric properties of YbFeO3, Yb3Fe5O12, and YbMn1-xFexO3compositions,with a focus on their temperature-frequency dependencies. The investigation covers the hexagonal phase, the coexisting hexagonal and orthorhombic phases, and the orthorhombic phase of YbMn1-xFexO3, and also provides valuable insights into the complex interplay between mechanical activation pressure and dielectric properties of Yb3Fe5O12 and YbFeO3 compositions, contributing to a deeper understanding of their behavior and phase transitions.
- 179. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 158 Synthesis and characterization of Ni1-xGdxO thin films by spin coating technique Srinivasa N Va , Manjunatha Tb ,Mahesh H Mc , Basavaraj Angadia,* a,b Department of physics, Bangalore University, Jnanabharathi Campus, Bengaluru 560056, Karnataka India b Department of Electronic Science, Bangalore University, Jnanabharathi Campus, Bengaluru 560056, Karnataka, India Abstract Pure and Gd-doped(Ni1-xGdxO) nanofilms are produced using the sol-gel spin coating technique at different concentrations (x=0,0.02, and 0.04). Experimental evaluations were used to extensively analyse the structural and optical properties of the generated films as well as the effect of the dopant on the NiO host matrix. The face-centered cubic structure, crystallinity, and crystallite size decrease as Gd concentration increases, assuring the appropriate inclusion of Gd dopant into the lattice, were all visible in the x-ray diffraction patterns. Raman spectroscopy was used to confirm the purity of the synthesised materials and the peak shift caused by the concentration of the dopant. FTIR shows Ni-O related vibrational bonds at 555 to 735 cm-1 , In addition to other absorbed vibrational connections linked to various functional groups. According to the film's UV-visible spectra, the visible region has the highest transmittance around average of 90%. Utilising tauc's plot relation, the optical band gap of the films was also evaluated. Due to the quantum confinement effect, a blue shift in the band gap value is seen. The findings indicate that applications for opto- electronic devices are possible for the generated samples. Keywords : NiO, spin coating, X-ray diffraction, FTIR, Raman, UV-visible.ct
- 180. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 159 Effect of Copper Substitution on Physical Properties of Ni0.6 Co0.4 Fe2 O4Nanoferrites. Somshekhar S Hiremath1 and L R Naik1 Email : somuhiremath535@gmail.com 1. Department of Physics, Karnatak University, Dharwad Karnataka, India. Abstract: Ferrite nanoparticles of Ni0.6 Cux Co0.4-x Fe2 O4 (where x = 0, 0.1, 0.2 and 0.3) were synthesized through sol-gel technique using sucrose as a fuel. The effect of copper concentration on its structural properties were investigated by characterizing XRD, SEM-EDS and FTIR. The XRD analysis showed the spinel structure with the lattice parameter in the range of 8.36 to 835 Å. As the concentration of Cu2+ increases the crystallite size decreases varies from 70nm to 40nm. SEM-EDS was used to study the morphology of all the samples which confirms the elements present in the composition and shows the fine grains. FTIR studies shows two absorption bands γ1 and γ2 in the specified range (600cm-1 and 400cm-1 ) which made sure the formation of spinel structure of the ferrite. Keywords: Sol-gel; Spinel ferrite; SEM-EDS; FTIR.
- 181. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 160 Exploration on Size Reduction In Square Ring Microstrip Antenna Using Golden Ratio. Rudrayya.Mudenurmath 1,2 . Prof Vani R.M2 1 . Department Of PG Studies And Research In Applied Electronics Gulbarga University,Kalaburgi India 2. Department of Electronics P.C.Jabin Ccience College,Hubballi,Karnataka(Autonomous) 2 . Head USIC Gulbarga University Kalaburgi.2 Abstract: Microstrip antenna concept introduced in 1950, but practically implemented in 1970 after invention of printed circuit board. There is a huge demand for microstrip antenna in wireless communication system because of its advantages. Nowadays when mobility is concerned, device compactness is the main requirement. In this view it is necessary to construct compact antenna to make device compact. But size reduction should not affect the operating frequencies of antenna. In his paper a novel approach golden ratio is applied to reduce size of square ring microstrip antenna for 2GHz frequency using FR4 substrate with dimensions 35.44x45.64x1.6mm having loss tangent 0.02, dielectric constant 4.4. Studied following parameters i.e. return loss, VSWR and size reduction and bandwidth. Then we compared the size reduction with golden ratio and without golden ratio the antenna simulation carried out using HFSS tool. Key words: Microstrip antenna, golden ratio, size reduction VSWR, bandwidth
- 182. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 161 Synthesis and Characterization of doped 𝜶 −Naphthol Luminophors V. B. Shabade, A. R. Mainak and S. R. Pujari* Department of Chemistry, D. B. F. Dayanand College of Arts and Science, Solapur. M. S. India vasantishabade@gmail.com, pujari_aarush@yahoo.co.in Abstract The number of tricomponent luminophors of Anthracene (AN) and Perylene doped 𝛼 −Naphthol were prepared with varying concentrations of dopant Anthracene and Perylene by conventional solid state reaction technique. The prepared luminophors are tested for their fluorescence emission and excitation spectra. The XRD spectra of prepared luminophor revealed the crystallinity of the sample. The microstrain, grain size, dislocation density and stacking fault has been estimated using XRD spectra. All the prepared luminophors are in 18 to 24 nm range. The excitation energy transfer (EET) phenomena observed in the luminophors. All luminophors are selectively excited at host excitation wavelength i.e. at 290 nm. Anthracene like emission is observed in these luminophors. These blue emitting lumniophors can be used in optoelectronic devices and in light emitting devices. Keywords: Fluorescence quenching, Organoluminophors, Light emitting devices, optoelectronic devices, excitation energy transfer.
- 183. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 162 Synthesis and Photoluminescence Studies of Manganese Oxide (Mnx-1Ox, x=3,4) Nanoparticles N.C.Horti1 and M.D.Kamatagi1,2* 1 Department of Physics, S.S. Government First Grade College, Nargund -582 207, Karnataka, India. 2 Department of Physics, Government First Grade College, Ramdurg- 591 123, Karnataka, India. Abstract: In the present work, manganese oxide(Mnx-1Ox, x =3,4) nanoparticles were successfully prepared through a chemical co-precipitation route. The as-synthesized nanoparticles were calcinated at different temperatures (300o C, 500o C and 700o C). The structural characterization of samples were made by X-ray diffraction, Field emission electron scanning microscopy and Fourier infrared transform spectroscopy. XRD pattern of samples reveal the formation of Mn3O4 and Mn2O3 phase. At 700o C, the phase transition fromMn3O4–Mn2O3 mixed phase to Mn2O3 phase is noticed. FESEM images confirm the formation of irregular and spherical shaped nano sized particles. At 700o C, the flat pellets like structures are formed. The bending vibration of various functional groups of Mn3O4 and Mn2O3phase were confirmed by FTIR analysis. The modification of fluorescence emission intensity with calcination temperature was noticedand the study reveals manganese oxide could be potential candidate for optical devices. Keywords: Manganese oxide, Photoluminescence,Nanoparticles, Optical devices.
- 184. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 163 Lattice thermal conductivity of ZrSe2 monolayers R.F.Chinnappagoudra1,2 , B.H.Yakannanavar1 , S.B.Patil1 , M.G.Bhyahatti1 , K.K.Gangai1 and M.D.Kamatagi1,3,* 1 Department of Physics, S.S. Government First Grade College, Nargund -582 207, Karnataka, India 2 Research Resource Centre, Visvesvaraya Technological University, Belagavi-590 018, Karnataka, India 3 Department of Physics, Government First Grade College, Ramdurg- 591 123, Karnataka, India. Abstract: Very recently, atomically thin layers of vander Waals bonded MX2 monolayer have gained tremendous scientific interest. Among vast family of MX2 layers, Zirconium diselenide (ZrSe2), with extreme low thermal conductivity has established itself as potential candidate for thermoelectric devices. The performance and reliability of devices rely critically on the efficiency of heat removal from the device- active region. In the present work, we have investigated wide temperature range (4<T<400 K) lattice thermal conductivity, of single layer ZrSe2using Boltzmann transport formalism. The contributions from in-plane longitudinal (LA) and transverse (TA) acoustic phonons and out-of-plane flexural (ZA) phonons are taken into account explicitly. The scattering of phonons by sample boundaries, impurities and other phonons via umklapp process are considered. Numerical results presented show that, at low temperatures (T<20 K), ZA phonon contribution is dominant, whereas at higher temperatures (T>50 K) LA phonon becomes important. It is found that the lattice contribution to TC in µm2 flakes is less than 1W/mK for rough surfaces. The study opens a new door for thermoelectric applications and brings out relative importance of scattering by the three modes of acoustic phonon modes in ZrSe2 monolayers. Keywords:Thermal conductivity, Phonons,Zirconium diselenide, Monolayers.
- 185. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 164 Laser welding of AISI309 steel toAISI446 steel joints:Processing optimization, metallurgical and mechanical properties Krishnanunni M1, , Dr. Shijo Thomas2 1 Research Scholar, Department of Mechanical Engineering, School of Engineering, Christ Deemed to be University, Bangalore. 2 Assistant Professor, Department of Mechanical Engineering, School of Engineering, Christ Deemed to be University, Bangalore. Email: krishnanunni.m@res.christuniversity.in Abstract Due to it sexceptional corrosion resistance, AISI309 steel to AISI446 steel joint are a very promising material for pressure vessels and heat exchanger applications.The impact of various laser welding parameters on the weld shape, as well as the microstructure and mechanical properties of dissimilar laser welded joints, was examined to encourage the implementation of laser welding of dissimilar weld joints.The following process variables, such as laser power, welding speed, and shielding gas flow rate, were chosen for this investigation; following processing optimization, the optimized laser welding process variables we reachieved. This experiment was done to examine the viability of creating an overlap autogenously welded joint using a laser beam and to demonstrate how the structure forms in this welded junction.The distribution of microhardness wasmeasured on dissimilar weld zones; the effect of microstructure on the mechanical properties was alsostudied. Keywords:laser welding,dissimilar weld,mechanical properties,optimization
- 186. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 165 PL studies of Gd2O3 and rare earth ion doped nanophosphors T P Jyothia.b , D.V Sunitha c* Email Id; sunithaprasad8@gmail.com a Research Scholar, Dept. of Physics, SOAS, Reva University, Bengaluru. Karnataka India. b Assistant Professor, Dept. of Physics, Govt. First Grade College, K R Puram, Bengaluru. Karnataka India c Associate Professor, Dept. of Physics, SOAS, Reva University, Bengaluru. Karnataka India. Abstract: In this work, pure and RE3+ (RE3+ = Dy3+ , Eu3+ , Pr3+ , Sm3+ ) ion doped gadolinium oxide (Gd2O3) nanophosphors are synthesized by the solution combustion method. The structural and morphological studies are carried out by the various characterization techniques like PXRD, SEM, FTIR, UV-visible spectroscopy. Using the PXRD data and Scherrer formula, the average crystallite size were determined and found to be 24.75 nm which is in accordance with standard JCPDS no. 43- 1015. The FTIR spectra reveals the absorption peak near 540 cm-1 , associated with the vibration of the Gd–O bond. The absorption bands in the range of 1300–1600 cm-1 are responsible for CO2+ anion groups and 3410 cm-1 due to H2O molecules.These bonds become weaker with increasing annealing temperature and nearly disappear after heating at 12000 C. This result indicates that there are no O-H or C-O groups in the Gd2O3 phosphors annealed at 12000 C. The band gap of the pure and RE3+ doped Gd2O3 were determined using Tauc plot and found to be in the range 5.12- 5.76 eV. SEM micrographs revealed the occurrence of spherical, agglomerated particles with non-uniform distribution. PL emission and excitation spectra for pure and rare earth doped Gd2O3 nanophosphors are discussed.In emission spectra (λexi = 276 nm), peaks in the range 450–500 nm with an intense peak centred at 485nm were due to self-trapped luminescence or intrinsic defects of Gd2O3 lattice. The peaks in the range from 525 to 637 nm were due to 6 GJ → 6 PJ transitions of Gd3+ ions. The peaks found in the emission spectra were sharp, distinct and intense. PL results reveals the characteristic emission peaks of rare earth ions. Key words: Gadolinium Oxide Nanophosphor, Crystallite size, Energy band gap, Excitation and Emission wavelength
- 187. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 166 Investigating the Physical Characteristics of Cs2LiGaBr6 Lead- Free Halide DoublePerovskite for Thermoelectric Applications *Mudasir Younis Sofi, 1 M. Ajmal Khan *,1 Department of Physics, Jamia Millia Islamia, New Delhi-110025, India. *Email; mudasir2009152@st.jmi.ac.in Abstract In this study, we employed advanced first principles calculations utilizing the Wien2k simulation code to comprehensively analyse the structural, electronic, and thermoelectric properties of lead-free halide double perovskite Cs2LiGaBr6. The structural evaluation firmly establishes its stable nature, showcasing a non-magnetic cubic configuration represented by the Fm-3m symmetry. Delving into its electronic properties, we harnessed a dual approach, combining the generalized gradient approximation (GGA) with the modified Becke-Johnson potential (GGA+mBJ). Our computational analysis reveals that Cs2LiGaBr6 adeptly embodies the characteristics desired of an exemplary band gap semiconductor. Notably, its charge carriersexhibit an exceptionally low effective mass, elevating its potential for diverse electronic applications. Motivated by the discerned optimal band gap and the favourable low effective mass, we conducted an in-depth exploration of the thermoelectric properties of Cs2LiGaBr6. The outcomes suggest promising values for pivotal thermoelectric parameters such as the Seebeck coefficient, further bolstered by a notable thermoelectric figure of merit (zT~1). These compelling results underscore the viability of Cs2LiGaBr6 in the realm of thermoelectric technologies, showcasing its potential to efficiently convert heat differentials into usable electric power. Keywords: Structural properties, Direct band gap semiconductor, Effective mass, thermoelectric response
- 188. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 167 BREASTMILK MONITORING OF NEONATAL USING RFID TECHNOLOGY MS.GA.Nivedha, Mirdula Sree K N ,Madhumitha T , Zainab Nisha M (IV year ECE) SRM TRP ENGINEERING COLLEGE ABSTRACT : Breastmilk is so important to an infant's growth and development, monitoring it is crucial in neonatal care. Breastmilk monitoring methods that are currently used are frequently labor-intensive, challenging and prone to human error. As a result, there is a demand for an automated system that can correctly detect, track, and classify breastmilk. The traditional methods for breastfeeding monitoring entail manually noting the date, time, and amount of milk produced. After that, the milk is refrigerated and labelled with the mother's name. However, this approach is prone to human mistakes, and monitoring the breastmilk expiry is difficult. In this study, we propose an RFID-based breastmilk monitoring and identification system that makes use of temperature and humidity sensors. An RFID tag is attached to each bottle or carton of breastmilk, and it carries data about the mother, the day and time of expression, and the amount of milk produced. To monitor the temperature and humidity of the refrigerator where breastmilk is being stored, the device additionally has a temperature sensor. This technology has the ability to decrease human error, save time, and ensure that infants receive high-quality care.
- 189. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 168 Synthesis of Novel Terpolymer from Natural Oil and Evaluation as Viscosity Modifier for the Indian Waxy Crude oil Prabha Modia a DepartmentofChemistry,Parul University, Vadodara, India *Correspondingauthor.Tel.:+919429927893. E-mailaddress:prabharawat.modi@gmail.com. Abstract In terms of productivity and production operation expenses moving from the reservoir to surface facilities, wax deposition in oil production is a serious and challenging problem to control. Because of the complicated chemical makeup of crude oil, pour point depressants are added at ppm levels to solve the transportation issue. Synthesized PPDs enhance flow characteristics, viscosity, and a number of other parameters to enhance crude oil performance. Four polymeric additives were created in the current study by polymerizing various Esters with Styrene and Natural Oil having conjugation. These additives were then used as Viscosity modifier and pour point depressants (PPD) for Indian crude oil. The results are encouraging and demonstrate that the presence of polar groups in the structure allows prepared additives to serve as both wax dispersants and flow enhancers. Studies using cross- polarizing microscopes were carried out to examine changes in wax crystal shape in crude oil with and without addition along with the Rheological studies of the crude with and without additives. A zero friction advanced Rheometer AR-500 was used to determine the viscosity by applying Bingham plastic-flow model. KEYWORDS:Polymeric Additives, Pour Point Depressant, Viscosity reducers, Wax Inhibitors
- 190. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 169 Quantum efficiency of manganese doped zinc silicates and its applications D. Srinivasa Rao 1 , Kenji Murakami 2 V. Madhu Mohan3 , and K. V. R. Murthy 4 1, Department of Physics, Rajiv Gandhi university of knowledge and technologies (APIIIT Ongole campus, RK Valley, A.P-516329) 2 Research Institute of Electronics,Graduate School of Engineering, Shizuoka University, Japan 3 Mohan Babu University, Tirupathi, 5 Display Materials Laboratory, Applied Physics Department, Faculty of Technology &Engineering, M.S.Central University of Baroda, Vadodara, Gujarat-390008, Email: dsrphysics199@gmail.com, Mobile: +91 7842233199. ___________________________________________________________________________________ Abstract Optoelectronic device phosphor materials like Zinc silicate doped with Mn and co-doped with Eu phosphors were prepared via high temperature solid state reaction in air medium. Overall results show that the PL intensity monitored at 525 nm with 254 nm excitations displays a good green emission from Zn2SiO4:Mn2 + Eu phosphor system The 4T1(4G)→6A1(6S) transition, is directly responsible for the green emission at 525nm. It is concluded the Eu ions sensitizes the 525nm emission in Zn2SiO4: Mn by 100%. The novel idea is to use the developed new samples holders to record the PL emission within the range. This concludes us the PL emission intensity is very high in both the samples Zn2SiO4:Mn2 + and Zn2SiO4:Mn2 + , Eu. The Zn2SiO4:Mn2+ Eu phosphor can be a good phosphor for PDP, CFL devices. By using Zn2SiO4:Mn2 +, Eu phosphors the total quantity in the device may be reduced by 40- 50% which leads cost reduction of the phosphor component in the optoelectronic device.Zn2SiO4 doped with manganese ion was synthesized by solid state reaction under air atmosphere. Their characterizations were systematically analyzed by SEM, X-ray diffraction (XRD) and photoluminescence spectra (PL). Photoluminescence emission spectra having excitations at around 254, 268nm revealed that Mn ions were present in trivalent oxidation states. The emission peaks are found at 525 nm(green) are observed. Scanning Electron Microscopy (SEM) was implemented to investigate the surface morphology of present phosphor. The obtained results on Zn2SiO4:Mn is suitable for green light source using UV light as the primary excitation, Plasma display panels (PDP’S) , cathode ray tubes, solid state lasers , lamp applications and luminescent phosphors in a series of compositions which have high efficiency and tailorable persistence. Key words: PL- photoluminescence spectra, XRD-X-ray diffraction, SEM-Scanning electron microscopy, PDP’S -Plasma display panels.
- 191. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 170 Study ofExchange Bias, Magnetic Memory and Magnetocaloric Effects in Mg-doped CoCr2O4 nanoparticles K. Manjunatha,a Chia-Liang Cheng,a and Sheng Yun Wua,* a Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan * Corresponding authors:sywu@mail.ndhu.edu.tw (SYW) ABSTRACT:In the present work, Mg-doped CoCr2O4 nanoparticles having spinel cubic structure shows different phenomena such as the exchange bias effect, magnetic memory effect and magnetocaloric effect. The refined XRD patterns of all samples reveal normal spinel cubic structure with space group Fd3m. Raman spectra of all samples show five Raman modes, which confirms the formation of spinel structure. The Curie temperature (TC) and spiral transition temperature (TS) decreased with the increase of Mg concentration. For x = 0 and 15 mol % Mg doped CoCr2O4 samples, an exchange bias effect is noticed where the exchange bias field sharply decreases with increasing field cooling (Hcool) from 500 to 25000 Oe. The results show that the exchange bias is caused by intrinsic magnetic inhomogeneity: the action of spiral spin order and collinear ferrimagnetic order below TS. Themagnetic memory effects verifiedbelow spin-glass structure using temperature and time-dependent magnetization measurements. The magnetocaloric effect has been investigated using magnetic fields ranging from 10 to 60 kOeacross the TC. The obtained relativecooling power (RCP) and change in magnetic entropy (-ΔSM) values are significant enough to consider Mg doped CoCr2O4nanoparticles as a magnetic refrigerant above liquid nitrogen temperature. The exchange-coupling constants confirms the existence of spin-glass and magnetic geometrical frustration behavior for both pure and Mg-doped samples, making these materials excellent candidates for technological applications involving magnet-memory and magnetocaloric effect fields. Keywords: Exchange bias effect; Ferrimagnetic;Magnetocaloric effect;Magnetic memory effect; Spin-glass structure.
- 192. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 171 DFT study on the structural, electronic and thermophysical properties of GdTiO3 using LDA R. N. Kharatmol* , Bhavik Thacker* , Dhara Raval# , Adwait Mevada+ , N. Y. Pandya$, P. N. Gajjar# * Parul University, P.O. Limda, Tq. Waghodiya, Vadodara, 391760, Gujarat, India # Department of Physics,University School of Sciences Gujarat University, Gujarat, India + Jeel Goswami College of Science and Research, Monark University, Vahela-Dahegam, 382433, Gujarat, India $ Government Commerce and Science College, Dahej, Gujarat, India Corresponding Author:nirav_physics85@yahoo.com kharatmol.ratnamala@gmail.com Abstract: Perovskite structure materials are of great interest in science researcher due to their specific properties and simple structure. Generalized gradient approximation function within the density functional theory, has been calculated to structural, electronic and thermophysical properties in ground state cubic phase (SG 221) of GdTiO3 with Ultrasoft Pseudopotential. It shows that the calculated structural properties of cubic GdTiO3 are in a good agreement with previous literature. In the electronic properties calculated band structure along with total and projected density of states, Density of State (DOS), Electronic charge density, and fermi surface. The thermophysical properties, like specific heat capacity, thermal expansion (α), Gruneisen parameter (γ), isothermal bulk modulus (B0) and Debye temperature (θD), were calculated in the temperature range of 0K to 1073 K. Keywords:Strontium technate; Perovskite GdTiO3; Electronic band structure; Fermi surface; Thermophysical Properties; Density Functional Theory (DFT)
- 193. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 172 Low-temperature Magnetic, Magnetic Memory and Magnetocaloric Effects of Sn0.6Cr0.1Ge0.3Te Alloys Hsin-Hao Chiu,1 K. Manjunatha,1 Hao Zhang,1 Shih-Lung Yu,1 N.S. Maruthi,2 Chia-Liang Cheng,1 Shidaling Matteppanavar,3 and Sheng Yun Wu,1,* 1 Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan 2 Department of Physics, Annamalai University, Chidambaram, Tamil Nadu 608002, India. 3 Department of Physics, KLE Society’s Basavaprabhu Kore Arts Science and Commerce College Chikodi-591201, India * Corresponding authors:810914201@gms.ndhu.edu.tw (Hsin-Hao, Chiu)sywu@gms.ndhu.edu.tw (SYWU) Abstract: In the Present work, the Sn0.6Cr0.1Ge0.3Te solid solution was synthesized by the sealed tube solid state reaction method to study the magnetic memory and magnetocaloric effects. The Sn0.6Cr0.1Ge0.3Te (SCGT) structure is formed by two inter-penetrating face centered-cubic lattices. Refined XRD pattern confirm the single phase with spinel cubic structure and Fm-3m space group. Raman spectra shows two vibration bands which confirms the formation of single phase. Chemical bond state of SCGT solid solution was confirmed by XPS analysis. The temperature dependent of magnetization confirm the ferromagnetic order transition is observed at Curie temperature (TC=182 K). SCGTsolid solution exhibit super spin-glass structure below blocking temperature, verified by the memory effects. Temperature dependent FC magnetization, time dependent ZFC and FC magnetization and isothermal remanent magnetization analysis show a magnetic memory effect below spin-glass state. The change in magnetic entropy across the curie temperature transition is estimated in these alloys with various applied magnetic fields ranging from 10 to 60 kOe, and the possible influence of these transitions on the estimated magnetocaloric effect is investigated. The maximum RCP (relative cooling power) and -ΔSM (change in magnetic entropy) value are found 7.5 J/kg and 0.107 J kg-1 K-1 , respectively at 6T. These findingsconfirm that the Sn0.6Cr0.1Ge0.3Te solid solution have potential in magnetic refrigerant and magnetic memory effect applications. Keywords: Magnetocaloric effect; Solid solution; Isothermal remanent magnetization, Magnetic memory effect
- 194. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 173 Synthesised turnery composite to improve the humidity sensing performance Thalari Chandrasekhar1 , Y.T. Ravikiran2 , N. Sasidhar2a 1 Department of Electronics, Government Science College, Hassan, India. 2 Department of PG Studies and Research in Physics, Government Science College, Chitradurga, India a) Corresponding author: tcsekhar2011@gmail.com Abstract: The performance of the humidity sensing is improved by using Ppy-FeCl3 and Y2O3. The sensing sample was prepared by mechanical vibration method. The synthesised samples were analyzed by FTIR and XRD techniques. The stirrer liquid sample was deposited on the ordinary glass substrate by using simple cost effective method i.e spin coating method. The sensing performance of the turner film is good. It senses the humidity very quickly and shows the response and recovery times are 11s and 12s respectively at room temperature. The film works basically the formation of chemisorption and physisorption layers followed by capillary condensation process. Keywords: Fe-ppy, yttrium oxide, spin coating, humidity hysteresis, humidity sensing response and recovery.
- 195. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 174 LithiumIon Transport Studies In PEO- PMMABased Blend Polymer Electrolyte Systems RevathyC1 , Sunitha VR2 * , Benson K Money2 and Radhakrishnan S3 1 Department of Electrical & Electronics Engineering, PES University, Bangalore 2 Department of Sciences and Humanities, Christ (Deemed to be University), Bangalore 3 Department of Science and Humanities, PES University, Bangalore * Corresponding Author - E-mail: sunitha.vr@christuniversity.in Abstract Poly(ethylene oxide) (PEO) – Poly(methylmethacrylate) (PMMA) based Blended Polymer Electrolyte Systems (BPES) were studied to understand its transport properties and ionic conductivityusing Impedance Spectroscopy technique. The BPESs were prepared by mixing high molecular weight PEO6(Mw = 1x106 ) and low molecular weight PEO5(Mw = 1x105 ) with PMMA (Mw =1.5x105 ), keeping the lithium perchlorate (LiClO4) salt concentration constant.The ionic conductivity and transport properties ofthese systems were studied in the temperature range 303K – 318K.The charge carrier density (n), ion mobility (µ) and diffusion coefficient (D) were estimated using Bandara and Mellanderapproach.The ionic conductivity and transport properties were found to increase with the inclusion of lower molecular weight PMMA and PEO5 into PEO6 matrix.The maximum charge carrier density, mobility, and diffusion coefficient were achieved for the composition, PEO6 (96 wt%)-PEO5 (2wt%)/PMMA (2wt%) – LiClO4,with highest ionic conductivity value of 1.89x10- 4 Scm-1 at 303K. All the transport parameters exhibited strong temperature dependence and found to increase with temperature.
- 196. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 175 Structural, Vibrational and Photoluminescence Properties of Cd1- xSnxWO4 (Where x= 0, 1, 3, and 5%) Nanorods Tsu-En Hsu, a K.Manjunatha,a Chia-Liang Cheng,a Ashish ChhaganlalGandhi,a and Sheng Yun Wua,* a Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan * Corresponding authors:811014201@gms.ndhu.edu.tw(Tsu-En Hsu),sywu@gms.ndhu.edu.tw (SYW) ABSTRACT: CdWO4 nanorods have received a lot of interest due to their potential to be used in numerous types of luminescent applications. We have synthesized Sn doped CdWO4 nanorods by hydrothermal method and characterized them using refined x-ray diffraction, FE-SEM, TEM, Raman and photoluminescence analysis. XRD patterns confirms the single-phase monoclinic phase. The crystallite size obtained from XRD were decreases from 62 to 38 nm with an increasing of Sn concentration from 0 to 5%. TEM and FE-SEM images of CdWO4 and Sn-doped CdWO4 clearly show the rod-like morphology. A Raman shift was found with increasing Sn2+ concentration, suggesting lattice distortion in the Sn2+ doped CdWO4 nanorods. Sn doping CdWO4 nanorods promotes surface recombination of electrons and holes, causing the PL intensity to decrease as Sn concentration increases. The chromaticity plot reveals that increasing the Sn concentration induced a shift in the emission colour from sky blue to light green, which was ascribed to increased defect density. This study gives insight into the behaviour of Sn-doped CdWO4 RDs during electron transitions, as well as the physical nature of emission, which might be employed in displays, light sources, and bio-imaging applications. Keywords:Raman Spectra, CdWO4nanorods, Synchrotron-based PXRD,Photoluminescence, Transmission electron microscopy.
- 197. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 176 Structural, Magnetic and Photoluminescence Properties of Cu Doped CdWO4 Nanorods Ming-Kang Ho,a Ashish Chhaganlal Gandhi,a,b K. Manjunatha,a Chia-Liang Cheng,a and Sheng Yun Wua,* a Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan b Department of Electrical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan *Corresponding authors:810814201@gms.ndhu.edu.tw(Ming-KangHo), sywu@gms.ndhu.edu.tw (SYWU) ABSTRACT: CdWO4with monoclinic wolframite structure is a well-studied material in the tungstate family with tremendous promise in a variety of applications. This work shows significant influence of magnetic and optical characteristics of hydrothermally produced single crystalline CdWO4 nanorods with adjustable replacement of Cu2+ ions at the Cd2+ site.With increasing Cu concentration (0 to 10%), the mean diameter (62 to 40 nm) and length (341 to 184 nm) decreased dramatically, resulting in an astounding 16% reduction in the aspect ratio. XRD results confirms the single-phase monoclinic structure. The development of a gradual shift from diamagnetic to increased magnetization in terms of Cu content was attributed to replacing [CdO6] with the small ferromagnetic [CuO6] cluster in the crystal lattice.Cu-doping produced intermediated energy level was given a redshift of 0.8 eV in bandgap energy and a relative 46% reduction in internal quantum efficiency, permitting direct transition between the valence band and conduction band proven by XEOL studies.Our findings indicate that Cu dopant-induced nucleation in CdWO4 influences energy transfer and structural modifications rather than direct radiative decay from Cu sites. Keywords: Cu-doping, Cadmium tungstate;Magnetism,Photoluminescence, XEOL.
- 198. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 177 Thermal control of the characteristics of Ho- modified BiFeO3in the microwave range Astafev P.A.1 , Andryushin K.P.1,2 ,PavelkoA.A.1 , ReznichenkoL.A.1 1 Research Institute of Physics, Southern Federal University, Russia 2 Kh. Ibragimov Complex Institute of the Russian Academy of Sciences (CI RAS), Russia astafev@sfedu.ru BiFeO3 refers to multiferroic materials that exhibit both ferroelectric and magnetic orderings.This composition shows promise for use in ferroelectric memory devices.Recently, several research groups have been studying the microwave- absorbing properties of BiFeO3, as well as its potential application in tuning microwave devices.However, a potential practical application is impeded by the presence of a spin-modulated structure, which greatly diminishes the magnetization magnitude of this material.To overcome this drawback and improve microwave absorption, different techniques are employed, one of which involves modifying BiFeO3 with various ions of rare earth elements.When modifying, much attention is paid to the dependence of the properties of this multiferroic material on temperature, as it determines the stability of characteristics within specific temperature ranges.Thus, the purpose of this study was to determine the patterns in the development of macroresponses in doped Ho BiFeO3 within the microwave frequency range, as well as to explore the potential for controlling its parameters through thermal action. The objects of study were solid Bi1-xHoxFeO3with x= 0.00….0.20, ∆x=0.05.The measurement samples are made in the form of a cylinder with a diameter of Ø10 mm and a height of 1 mm.Radiophysical studies in the temperature range Т= (300…503) K and frequencies f= (8.2…12.4) GHz were carried out in a waveguide measuring cell using a P9375 “Keysight” vector network analyzer. It has been found that at room temperature, maxima are formed in the absorption coefficient of BiFeO3 SS at f ~8.7 GHz and ~ 10.3 GHz. As the temperature increases, the peaks of the loss factor for the measuring sample shift towards lower frequencies, and their intensity increases.When cooling, the studied characteristics return linearly to their original values, assuming there is no hysteresis in the dynamics of these processes. In addition, the introduction of holmium causes a gradual shift of the maxima found at T=300 K to the low-frequency region. It should be noted that the temperature has a similar effect on samples containing a modifier as observed in pure BiFeO3. The data obtained must be taken into account when designing such materials, as well as devices based on them.
- 199. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 178 Study of structural,vibrational and magnetic properties ofGe and Mn doped SnTe Alloys Hao Zhang,1 K. Manjunatha,1 Hsin-Hao Chiu,1 Shih-Lung Yu,1 N.S. Maruthi,2 Chia-Liang Cheng,1 Shidaling Matteppanavar,3 and Sheng Yun Wu,1,* 1 Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan 2 Department of Physics, Annamalai University, Chidambaram, Tamil Nadu 608002, India. 3 Department of Physics, KLE Society’s Basavaprabhu Kore Arts Science and Commerce College Chikodi-591201, India * Corresponding authors:sywu@mail.ndhu.edu.tw (SYW) Abstract: In the present work, the Mn and Ge doped SnTealloys was synthesized by the sealed tube solid state reaction method to study the structural, vibrational and magnetic properties. Refined XRD pattern of synthesized sample reveals theformation of spinel cubic structure. Oxidation states of all elements was confirmed by XPS analysis. The EDX spectra confirming the existence of all elements involved in sample preparation. Raman spectra of synthesized sample shows four vibration bands in this study. The temperature dependent of magnetization show the ferromagnetic order transition at Curie temperature. The M-H loop investigated across curie temperature which exhibits a paramagnetic order above Curie point and a ferromagnetic order below Curie point. Keywords: Magnetism; Solid solution; Ferromagnetic; Paramagnetic.
- 200. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 179 Study of electrical and magnetic properties of Bi doped CoCr2O4 nanoparticles Shih-Lung Yu,1 K. Manjunatha1 , JagadeeshaAngadi V,2 Sheng Yun Wu1,* 1 Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan 2 Department of Physics, P.C. Jabin Science College, Hubballi-580031, India *Corresponding author: sywu@gms.ndhu.edu.tw (SYW) Abstract: In the present work, the Bi doped CoCr2O4 nanoparticles were synthesized by combustion method and characterized through XRD, TEM, impedance analyzer, and SQUID magnetometer. The XRD pattern of synthesized samples reveals the formation of a spinel cubic structure. TEM images shows particles are spherical in nature and are nanoscale range in size. Dielectric studyreveals thatall samples exhibited high AC conductivity and a low dielectric loss tangent at higher frequencies. The temperature-dependent magnetization shows two magnetic transitions such as paramagnetic to ferrimagnetic transition at Curie temperature and spiral spin order transition at a spiral transition temperature. The M-H loop was investigated across Curie temperatures for all samples,which exhibits a ferrimagnetic behaviour below Curie temperature and paramagnetic behaviour above Curie temperature. Keywords: Solution combustion method;Transmission electron microscopy; Magnetism; Spiral spin order
- 201. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 180 Synthesis and Optical Properties of Lead-Tungsten-Tellurite Glasses Rajiv Pandeya *,Ghizal F. Ansaria , a Department of physics, Madhyanchal Professional University, Bhopal, India,462044 *corresponding author : c rajeev9939160108@gmail.com, Abstract By using the melt-quenching method, lead tellurite glasses with the formula (80-x)%TeO2-20%WO3-x%PbO with x = 5, 10, 15 and 20 mol% were created. Optical properties as absorption, band gap energy and refractive index of the synthesized glasses have been done. For the optical study of absorption spectra have been recorded in the 300nm to 1200nm rang. Optical band gap is calculated by using Tauc’s plot method. Key words: melt-quenching method, tauc’ plot,optical properties.
- 202. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 181 (E)-(1-(5-chlorothiophen-2-yl)ethyl)diazenyl)(furan-2- yl)methanone:Synthesis, charecterization, crystal structure, Hirshfeld surface and DFT studies. B. Pramodha , Karthik Kumarab and N. K. Lokanathc* a Department of Physics, Govt. First Grade College, T. Narasipura, Mysore 571 124, India b Department of Physics, BMS College of Engineering, Bull Temple Road,Bangalore - 560 019, India c Department of Studies in Physics, University of Mysore, Mansagangotri, Mysore 570006, India Abstract The compound was synthesized by slow evaporation method and characterized by various spectroscopic technics (NMR, FTIR, UV-vis). The title compound (C11H9ClN2O2S) was crystallized in monoclinic crystal system with P21/aspace group. The molecule is non-planar as confirmed by the dihedral angle of 11.68(19)ºbetween the five membered chlorothiophene and furan ring. The crystal structure exhibitsboth intermolecular N-H∙∙∙O, C-H∙∙∙O and intra molecular C-H∙∙∙N hydrogenbond interactions. These interactions connect the inversion dimer and leads to the formation of 𝑅2 1 (7), 𝑅2 1 (5) and𝑅2 2 (8)supramolecular ring motif. The crystal packing is further stabilized by π∙∙∙πinteractions. Hirshfeld surface analysis, revealed the major contribution of H∙∙∙H (18.5%) interactions to the total molecular surface.The Quantum Theory of Atoms in Molecule(QTAIM) analysis revealed vander Waals interactions between C-H∙∙∙N andC-H∙∙∙S contacts. The calculatedinteraction energy of this compound is -301 kJmol-1 and the HOMO-LUMO energy gapis 3.9522 eV. The red and blue coloured regions spread around O12 and O17atoms on themolecular electrostatic potential (MEP) surface represents the electrophilic and nucleophilic nature of the chemical moieties.
- 203. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 182 An efficient catalyst for the hydrolysis of NaBH4 -CoB-MOF Anitha Abraham, R. Fernandes Department Physics & Electronics, Christ University, Bangalore Abstract The development of effective transition metal catalysts that can replace noble metal catalysts for hydrogen production through hydrolysis of chemical hydrides has attracted great interest. In the present work, cobalt boride (Co-B) was synthesized in the form of a metal-organic framework (MOF) by hydrothermal and chemical reduction methods. The prepared catalyst was tested for hydrogen production and was able to deliver an HGR of 1.9 L/min/g, which is twice the HGR of a CoB powder catalyst. SEM images of CoB-MOF revealed the hierarchical morphology of two dimensional nanosheets.XRD pattern of the prepared catalyst suggests the crystalline nature of it. Crystalline Co-MOF was completely transformed into amorphous CoB- MOF after introduction of boron. This amorphous form of CoB-MOF showed an increased H2 generation rate for the hydrolysis of NaBH4, while Co-MOF was inactive for the same reaction. The increased activity recorded by CoB-MOF was mainly attributed to the morphology and the presence of boron along with cobalt. The low activation energy of 53 KJ/mol was determined for CoB-MOF from the Arrhenius diagram, which is lower than most of the reportedvalues.CoB-MOF also exhibited excellent stability even after annealing at high temperature.
- 204. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 183 ZnO-Baed Sensor for the Detection of Cortisol level DIVYAMANI M P, NAVEEN KUMAR S K Mangalore University, Mangalore, Karnataka, India. Email Address: divyamani.mp@gmail.com Abstract: The hormone cortisol controls human blood pressure, glucose levels, and carbohydrate metabolism. A cortisol imbalance can result in a number of symptoms that are directly related to both psychological and physical health. In this research, we study the development of an electrochemical sensor modified with a ZnO seed solution on an SPCE. The ZnO seed solution is used as a sensing material and was electrochemically synthesized using the drop-casting technique. The surface morphology of the ZnO was characterized using field emission scanning electron microscopy (Fe-SEM) and energy-dispersive X-ray spectroscopy (EDS). Further, ZnO was coated on an SPCE to investigate the electrochemical sensing characteristics of the ZnO structure. It was measured using a Kiethley instrument, showing the performance of the sensor that was investigated in the current (ampere) with respect to the voltage ranges of 0.1 V to 15 V. The I-V curve then showed the ohmic nature of the sample. The results show that ZnO seed solution can be successfully used to detect cortisol with good sensitivity in saliva sample analysis.
- 205. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 184 On the precise lattice parameter determination Chandana S1 , Soundarya A R1 , Veerabhadrayya M1 1 University College of Science, Tumkur University, Tumakuru-572103, India Abstract The determination of lattice parameters is very important in the study of crystal structure, solubility range, phase identification, physical properties and the determination of solvus curves. In this work we have explained the need for precise lattice parameter determination, graphical method (Nelson-Riley method), Rietveld refinementand illustrations for cubical and tetragonal system. Keywords: Lattice parameter, Graphical method, Rietveld refinement, tetragonal system Corresponding author: veerabhadrayyam1974@gmail.com
- 206. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 185 Evaluation of theelectrochemicalattributes of dual-functional NiO and BiOCl hybrid sathigh operational potential Sevda Yetimana,f* , Fatma Kılıç Dokan b ,Mustafa Serdar Önsesa,c ,Erkan Yılmaza,d Ertuğrul Şahmetlioğlua,e a ERNAM-Erciyes UniversityNanotechnology Application andResearch Center, Kayseri, 38039, Turkey b Department of ChemistryandChemicalProcessing Technologies, Mustafa ÇıkrıkcıogluVocational School, Kayseri University, Kayseri, 38039,Turkey c Department of MaterialsScienceandEngineering, Faculty of Engineering, Erciyes University, Kayseri, 38039, Turkey d TechnologyResearch& Application Center (TAUM), Erciyes University, Kayseri, 38039, Turkey e Department of Basic Sciences of Engineering, Kayseri University, Kayseri 38039, Turkey f ErciyesUniversityGraduate School of Natural andAppliedSciences, Department of NanoscienceandNanotechnology, Erciyes University, Kayseri 38039, Turkey * CorrespondingE-mail:ytmnsevda@gmail.com Abstract: Developing clean, economical, and accessible electro active electrode materials is an essential approach to accomplish high-efficiency energy conversion and preservation, hence facilitating the change to sustainability in theabsence of carbon. Thisstudyreports a direct and feasible approach to form NiO dopped BiOCl multifunction alelectrode material operating as cathode for zinc-ionhybrid supercapacitor (ZHSC).Thehybrid electrodeably operated upto 1.9 Volt. The recorded highest energy (ED), and power densities (PD) were as 144 Wh kg-1 and 17 kW kg-1 , respectively.These results authenticate NiO@BiOCl as a considerably promising material for ZHSCs.
- 207. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 186 An Experimental study of temperature distribution and mechanical characteristics of friction welded Al-Cu butt joints with circular OHNS steel tool. Pratap Kumar J1 *, Anil Raj2 1*Research Scholar, Department of Mechanical and Automobile Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bengaluru, Karnataka, 560074. 2, Assistant Professor, Department of Mechanical and Automobile Engineering School of Engineering and Technology, CHRIST (Deemed to be University), Bengaluru, Karnataka, 560074. Presenting authors email: 1*pratap.kumar@res.christuniversity.in 2anil.raj@christuniversity.in Abstract In this investigation, the base metals selected were AA6101 and C11000 alloys of the Aluminium and Copper series. The base metals were joined by friction stir welding using a circular OHNS steel tool. During the welding, the temperature distributions at the welded Al-Cu joint area were determined for each trial. The results show that the microhardness value obtained at the joint area was higher than the base metals AA6101 and C11000. The maximum temperature obtained at the AA6101-C11000 joints for the trial will have the highest ultimate tensile strength (UTS) value. In this work, the highest joint efficiency was found to be 55.28% concerning the AA6101 base metals at high tool rotational speed, feed rate, and 0 mm tool offset. Keywords: Friction Stir Welding; OHNS steel tool, Circular pin, Temperature distribution
- 208. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 187 Molecular aggregation kinetics of Heteropolyene Sumit Kumar Panja a,* , Sumit Kumar b,* , Anas D. Fazal a , Sayantan Bera c a Tarsadia Institute of Chemical Science, Uka Tarsadia University, Maliba Campus, Gopal Vidyanagar, Bardoli, Mahuva Road, Surat-394350, Gujrat, India b Department of Chemistry, Magadh University, Bodh Gaya 824234, Bihar, India c Department of Chemistry, Jadavpur University, Kolkata 700032, West Bengal, India * Corresponding authors. E-mail addresses: sumitkpanja@gmail.com (S. Kumar Panja), sumitkrmgr@gmail.com (S. Kumar). Here, the solvent specific demonstration of the ground state as well as excited state aggregation of the molecule (BISCH)has been done. There is a difference in the nature of aggregation in both the states on use of H2O as a solvent. In case of excited state,the fluorescence behaviour is identified has been identified by time resolved fluorescence spectroscopy. The rate of aggregation has also been measured by steady state absorption spectroscopy. It has been found that aggregation is highly sensitive towards nature and polarity of the solvent. The cause of solvent on aggregation has been analysed on the basis of hydrophilic and hydrophobic interaction. In addition to this the J-type aggregation can be seen in H2O. By using kinetic models of excited as well as ground state of 1st order, aggregation rate constant has been determined to be 1.2*10-4s-1 (kagg=413nm) & 8* 10-4 s-1 (kagg=312nm).The consequence on the molecular geometry which resulted from the interaction of BISCH and the solvent molecule is discussed based on DFT calculations. Natural bond orbital, Density of state, Non covalent interaction and Molecular electro static potential are done for BISCH in H2O with several topological analysis.The natural bond orbital interaction is seen because of the presence of delocalization of lone pair in N36 and O35 to antibonding of H37-O38 and H40-O41 Localized orbital locator, Atoms in molecules, Average localized ionization energy and Electron localisation function calculation have been used to locate magnitude and site of H-bonding interacion.Ab intro molecular dynamics in H2O the minimum of total energy between 125 and 175 fs and 225–275 fs. The N----H-O bonding interaction like N36-H40 and N35-H37 varies from 1.8 -2.6 Å during AIMD.
- 209. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 188 Study on polyaniline dislocation density and strain in MgO nanocomposites. Ramabai Narasimhachar1 , Bharati Basavaraj2 and Basavaraja Sannakki1* . 1,2 Department of Physics, Gulbarga University, Kalaburagi- 585106, Karnataka * Corresponding author. Tel: +919449292894. E-mail:sannakki@rediffmail.com and ramabai giriprsad@gmail.com Abstract: Polyaniline was synthesized using in-situ chemical oxidative polymerization with ammonium persulphate as an oxidizing agent. Polyaniline is doped with MgO nanoparticles at varying weight percentages. XRD used to characterize the polyaniline and nano-composites. The crystallite sizes are calculated using the Debye-Scherer relation from the XRD spectra of nano-composites with varying weight percentages. The crystallite sizes of nano particles reduced as the weight percentage of MgO increased in polymer matrix. The dislocation density caused due to defects in the crystals of nano-composites is determined. The dislocation density increased as the wt% of MgO in polyaniline increased. Furthermore, the strain produced at the grain boundary is determined using the FWHM of the XRD spectra. The strain of nano- composites at the grain boundary increased as weight percent of MgO increased in the nano-composites of polyaniline.
- 210. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 189 Experimental investigation of hexagonal boron nitride reinforcement in Aluminium alloys through casting method Nice Menacherya,b , Shijo Thomasa a Department of Mechanical Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bangalore, 560 074, India b Department of Mechanical Engineering,Jyothi Engineering College, Kerala, 679531, India Shijo.thomas3@gmail.com, 91- 9447745052 In the current scenario, materials are the foundation of every country, the need for advanced materials or alternative materials with enhanced properties is highly recommended in all fields. All industries are under constant pressure to meet current demands for the same monolithic materials by properly alloying and varying microstructures in order to achieve greater performance. Their limitations, like complicated manufacturing requirements and the increased cost of the finished product, have been the biggest obstacles to their widespread use. Better manufacturing techniques for reinforcements are therefore required to increase their usefulness in practical applications. Due to their low density, high strength-to-weight ratio, high toughness, resistance to corrosion, increased stiffness, better wear resistance, improved creep resistance, low coefficient of thermal expansion, and enhanced high-temperature qualities, aluminium and its alloys are in great demand. In order to get the tailored properties, Al alloys are reinforced with organic and inorganic reinforcements. The incorporation of hexagonal boron nitride (hBN) as a reinforcement material in aluminum alloyshas garnered significant attention in recent years. This paper provides an overview of the reinforcement of hBN in aluminum alloys through castingmethod and highlights the mechanical and thermal properties of these alloys. The resultant hBN-reinforced aluminum composites exhibit improved tensile strength, hardness, wear resistance, and thermal conductivity. Furthermore, the impact of hBN content, dispersion, and processing parameters on the properties of the composites is analyzed. The unique structural and thermal properties of hBN, such as its high thermal conductivity and excellent lubricating abilities, make it a promising candidate for reinforcing aluminum composites.
- 211. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 190 Structural, Morphological, and Electrochemical Study of the Electrodeposited Cadmium Oxide Thin Films for Supercapacitor Application Prathamesh Dahivade, Balkrishna Lokhande* Lab of electrochemical studies, School of Physical Sciences P.A.H.Solapur University Solapur 413255, M.S., India Abstract: The rise in requests of energy storagedevices is important to the construction of energy storagesystems with high efficiency at lower prices. Supercapacitors serve as a hopeful candidate for this purpose.Cd(NO3)24H2O isan n-type semiconductor with a band gapin-between 2.4eV-3.1eV. Its potential for application in electrochemical energy storage devices especially as an electrode material for supercapacitors is limited. In this work, we deposited the CdO by electrochemical deposition technique. The film was deposited from an aqueous solution of Cd(NO3)24H2O and prepared sample annealed at 300o C.Electrochemical properties of the Synthesized electrode are investigated with a three-electrode system in 1Maqueous KOH as the electrolyte.X-ray diffractionpattern is utilized to find the nature of the material and SEM is used to find the morphology of the given electrode. Electrochemical characterization proved the CdO nanoparticleprovided an excellentvalue ofspecific capacitance of 735 Fg-1 . Keywords: Cadmium Oxide, Electrodeposition, Cyclic voltammetry, SEM, Energy Storage.
- 212. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 191 𝐼𝑚 Third order nonlinear optical response of TiO2 nano colloidal solutions under continuouswave laser K. Rachana1 , K. K. Nagaraja2 , P. Poornesh2 , S. Pramodini1,# 1 Department of Physics, Reva University, Kattigenahalli, Yelahanka, Bengaluru-560 064, India 2 Department of Physics, Manipal Institute of Technology, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India-576 104 Abstract Titanium dioxide (TiO2) possesses a high nonlinear refractive index and is considered as a one of the potential materials for different nonlinear optical applications. The nonlinear absorption behavior (NLA) of the TiO2 colloidal solution have been investigated in the current study using the z-scan technique and a continuous wave (CW) He-Ne laser. Various characterization techniques, viz. XRD, FTIR and ultra-violet and visible spectroscopy (UV-vis) were performed to study the structural and optical properties of the material. The sample exhibited reverse saturable absorption (RSA) behavior, based on the open aperture (OA) z-scan data. The imaginary part of the third-order nonlinear optical susceptibility (𝜒(3) ), were determined and found to be around 3.21×10-7 esu for 15 mM solution. Key words: Z-scan, Nonlinear Optics, Titanium dioxide, CW laser
- 213. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 192 Study on the production of metal matrix composites AA7050 through stir casting Nagaraja T. K.1 and Sasidhar Jangam2 1 Research Scholar, Department of Mechanical and Automobile Engineering, SOET, CHRIST (Deemed to be University), Bengaluru, Karnataka,India. 2 Assistant professor, Department of Mechanical and Automobile Engineering, SOET, CHRIST (Deemed to be University), Bengaluru, Karnataka,India. Abstract: Stir casting is one of the most suitable processes for producing Metal Matrix Composites AA7050 because of its simplicity, proven process, lower cost of production and mass production capability. This project reviews all the significant attributes of a stir casting process such as furnace design, properties of the composites, challenges in the production of the composites as well as the potential research opportunities in the production of composites. We have also provided recommendations for the furnace design, selection of matrix and reinforcement materials as well as process parameters and additives, which makes the review novel. In order to provide a background for any reader interested in the production processes for MMCs, we have also discussed the various approaches in the introductory section briefly. Based on the critical assessment of the literature, especially the mechanical properties of the produced MMCs, a bottom tapping stir casting furnace, preferably with electromagnetic and ultrasonic stirrer along with squeeze attachment is recommended for the production of MMCs. Keywords: Stir casting, AA7050, MMCs, reinforcement, process parameters
- 214. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 193 PHOTOCATALYTIC DYE DEGRADATION OF RHODAMINE B USING ZINC OXIDE NANOPARTICLES C. Shalini1 , K. K. Nagaraja2 , and S. Pramodini1,* 1 Department of Physics, REVA University, Kattigenahalli, Yelahanka, Bengaluru-560064, India. 2 Department of Physics, Manipal Institute of Technology, Manipal, Manipal Academy of Higher Education, Manipal-576104, India. * Corresponding author: somynraj@gmail.com In the present work, photodegradation studies using Zinc oxide nanoparticles were performed on Rhodamine B dye. Zinc oxide (ZnO)nanoparticles were synthesized using Sol-gel method andthe bandgap isfound to be 3.2 eV. The efficiency of the photocatalysts prepared is been tested during the dye degradation processunderXenon lamp (Ultraviolet light source). Manydegradation trails with 50 μMRhodamine B (RhB)dye concentrations and different catalysts loading are been performed.ZnO has shown to be a promising photocatalyst under UV irradiation. The highest degradation efficiency was found to be 60.69% in 120 minutes. (a) (b) Figure 1: Degradation of 50 micromolar RhB dye using (a)200mg ZnO, (b) 300mg ZnO in 120 minutes. Keywords: Photocatalysis, Dye degradation, UV light.
- 215. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 194 Current-Voltage characteristics of nanographene and titanium dioxide(TiO2) heterostructure Vindya Shetty1 , Abhishek Hiremath1 , Dr. P. Anjaneyulu1* 1Department of Physics, School of Applied Sciences, REVA University, Bangalore, Karnataka, India. *Email: p.njaneyulu@reva.edu.in Abstract: The nanographene solution was prepared and coated by spin coating technique on fluorine doped tin oxide (FTO) substrate to fabricate thin films. Current-Voltage (I-V) characteristics were performed on the above thin films in metal/insulator/metal (MIM) structure, i.e., FTO/nanographene/silver (Ag). Then heterostructure are fabricated by coating TiO2 nanoparticles on top of the nanographene, and vice versa. Then I-V measurements was carried out on these devices too with FTO as bottom electrode and Ag as top electrode. I-V data shows ohmic behavior for nanographene, and for heterostructures non-ohmic behavior is observed. The I-V hysteresis measurements shows resistive window in positive bias region for heterostructure and shows no resistive switching in the negative bias region. Stable SET and RESET values were observed in heterostructures, the dominant conducting mechanism were ohmic behavior and space charge limited conduction mechanism at high and low resistance state. The resistive switching phenomenon was explained by formation and rupture of the filament in which oxygen ions migration takes place.
- 216. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 195 Impedance, magnetodielectric and magnetoresistive properties of YbMn1-xFexO3 Zhengyou Li*1 , Kamaludin Abdulvakhidov1 ,V. Jagadeesha Angadi2 , Abeer Alshoekh1 , Bashir Abdulvakhidov3 , Marina Sirota1 , Ivan Dmitrenko1 1. Southern Federal University, Sladkova 178/24, Rostov-on-Don, 344090, Russia 2. P.C. Jabin Science College, Hubballi, 580031, India 3. Dagestan State University, Gadgieva 43-a, Makhachkala, 367000, Russia *Corresponding author. chl@sfedu.ru Abstract This paper summarizes findings related to the impedance, magnetodielectric and magnetoresistive properties of YbMn1-xFexO3 composition at varying temperatures, frequencies, and mechanical activations.The complex impedance, characterized by Z′(ɷ) and Zʺ(ɷ), exhibits distinct trends: Z′(ɷ) decreases monotonically with frequency, converging into a linear trend at higher frequencies.The temperature dependence of the fitting parameter Rg displays an intriguing exponential non-Debye behavior, diminishing with increasing temperature. Upon raising temperature and frequency, Z′(ɷ) of YbMn1-xFexO3 is suppressed, coalescing into a single linear curve within the 103 -105 Hz frequency range. The dependence of Zʺ(ɷ) follows a relaxation pattern. We also explores the magnetodielectric (MD(ω)) and magnetoresistive (MR(ω)) coefficients of nanostructured YbMn0.3Fe0.7O3 and YbMn0.5Fe0.5O3 in alternating current under crossed and parallel electric and magnetic fields (E and H). Interestingly, the curve shapes are highly influenced by the quantity of magnetic field cycles (-H↔+H). Furthermore, upon repeated cycling, MD(ω) and MR(ω) dependencies exhibit mirror symmetry, indicating a magnetoresistive origin for the magnetodielectric coefficient MD(ω). This study contributes valuable insights into the intricate electrical and magnetic properties of YbMn1-xFexO3 compounds and their responses to various external influences. Keywords: Impedance, Magnetodielectric, Magnetoresistive, YbMn1-xFexO3
- 217. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 196 Indirect experimental investigations on the half-metallicity of Mn2V0.5Co0.5Z(Z=Ga,Al) compensated ferrimagnets P V Midhunlal1* , J Arout Chelvane 2 , P D Babu 3 , N Harish Kumar 4 * midhunlalpv3@gmail.com 1. Department of Sciences and Humanities, School of Engineering and Sciences, Christ (Deemed-to- be University), Bangalore- 560074, India. 2. Defense Metallurgical Research Laboratory, Kanchanbagh (PO), Hyderabad- 500058, India. 3. UGC-DAE Consortium for Scientific Research, Mumbai Center, R-5 shed, BARC, Trombay, Mumbai-400085, India. 4. Department of Physics, Indian Institute of Technology-Madras, Chennai- 600036, India. Abstract: Half-metallic compensated ferrimagnets with high Curie temperature are potential candidates for spintronic applications due to their zero moment and high spin polarization [1]. Our earlier investigation on the structural and magnetic properties of Mn2V1-xCoxZ (Z=Ga, Al; x=0, 0.25, 0.5, 0.75, 1) alloys have shown a high TC compensated ferrimagnetism for x=0.5. But the half-metallic characteristic was not probed. Here we are presenting an indirect investigation of the half-metallicity of Mn2V1-xCoxZ using magnetization and electrical resistivity studies. The magnetic moment values are in close agreement with the values predicted by S-P rule. variation of spontaneous magnetization showed a local moment behavior at low temperatures and an itinerant behavior at higher temperatures for all the samples except x=0.5. The major contribution to the resistivity at low temperatures arises from two-magnon scattering and the one- magnon spin-flip scattering was less in magnitude. Indirect evidence for half- metallicity can be observed except for the x=0.5 sample.
- 218. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 197 Internet of Things for Healthcare Applications Dr. Anil Wamanrao1 , Dr. Mamatha A G2 and Dr. R L Raibagkar3 Department of Applied Electronics Gulbarga University Kalaburagi Abstract: IoT(Internet of Things) now a day is playing a vital role in many area of applications. A few applications to name shrewd home, brilliant city, mechanical spots, horticulture fields, keen conditions and wellbeing health care procedures. In this paper we have presented one such application in medical services to diagnose the patient status by means of Internet of Things. This makes therapeutic gear more effective by permitting real time checking of patient in which sensor gets information of patients and decreases the human created errors. This proposed IoT based system design is useful in situation like covid-19 disease. It will help doctors to monitor the patient health condition. According to medical procedure if the patient requires acute care then before assessing the pathetic situation care can be taken by monitoring real time vital sign of the patient. The proposed system is compact, portable and low cost. This proposed system outlines the design and development of a reliable wireless sensing device on the basis of NODE-MCU for collecting real time human body health vital signs such as heart beat rate and body temperature. This system helps in online diagnosis to manage health more efficiently without going out of the premises of the house.
- 219. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 198 T-Slit and symmetrical arc loaded with defective ground plane monopole microstrip antenna for wireless communication applications. Srinivas Ramacharya1 , Syeda Rafath Ara2 , Vani R M3 1,3 -Department of Applied Electronics and Studies in Research, Gulbarga University, Kalaburagi 2 -Department of Electronics, Government College(Autonomous College) Sedam Road, Kalaburagi. Abstract A monopole antenna with defective ground plane and symmetrical arc on both aide with T-slit on left side of radiating rectangular path is proposed in this paper. The geometry is very simple in design and covers area. Impedance bandwidth of 75.90% covering 1.31 GHz to 7.51GHz at S11<-10dB is achieved. The T- shape slit introduced on radiating patch enhanced the resonance modes. The antenna radiation patterns are very close to omnidirectional radiation pattern. The maximum gain observed is 5.5 dB. The result shown that the designed antenna has potential applications in wireless communication applications. Keywords: T-slit, symmetric arc defective ground, monopole microstrip antenna, wireless communication
- 220. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 199 Review on multiband microstrip patch antenna comprising 5G wireless communication Smt Revati.J.Poonja.Dr R.L.Raibagkar Gulaburga university, Kalburgi India Department of Electronics P.C.Jabin Science College Hubball Abstract: In this wireless communication era multiband microstrip patch antenna having tremendous applications including aircraft, space craft, satellite,missile,mobile radio and wireless communications. The paper provides review of various techniques to design compact, multiband planar antennas for wireless devices and applications,need for multi band antennas (MSAs) .Paperalso givesa comprehensive theoretical concept to achieve multi frequency antenna along with related issues for designing have been briefly discussed
- 221. International Conference on Recent Trends in Advanced Materials-2023 School of Physical Sciences KLE’s P.C.Jabin Science College, Hubballi Page 200 Synthesis & Characterization of Rubidium Doped Magnesium Ferrite Veeresh G Hiremath1,2* , G.H Malimath1 , Jagadeesha Angadi V2 , S V Angadi3 1 Department of Physics, Karanataka Science College, Karanatak University, Dharwad-580003, India 2,3 Deparment of Physics, P.C.Jabin Science College, Hubballi-580031, Karnataka, India *Corresponding author: veeresh659@gmail.com Abstract In this work we report the characteristics of Mg-Rb ferrites synthesized by solution combustion synthesis route. The produced Mg1-xRbxFe2O4 powder have been examined using energy dispersive X-ray spectroscopy (EDX), field effect scanning electron microscopy (FESEM), powder X-ray diffraction (PXRD), and Fourier transform infrared (FTIR). According to the results of powder XRD, unit cell volume(590-502Ao ) and crystallite size(40-26 nm) decrease when Rb ion concentration increases. The nanomaterial has a single phase with the Fd3m space group, according to the PXRD. The presence of Mg, Rb, Fe, and O elements is confirmed by EDX. The samples are highly porous nature (8 to 24%) and high surface volume(0.71-0.76). The spinal ferrite structure is clearly visible in the FTIR spectra, and the bands in the high-frequency region illustrate how hygroscopic the produced materials are. Key words: Humidity, sensitivity, Recovery time, ferrites. View publication stats