NAKATANI RIES白鳥最終プレゼン「The interaction of gold nanostructure with different laser polarizations in COMSOL simulation」
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The document discusses the interaction of gold nanostructures with various laser polarizations using Comsol simulation and experimental methods. It highlights the concepts of plasmonics, surface plasmon resonance, and their implications for enhanced electric fields and photothermoelectric effects. The authors aim to advance their research at Rice University in applied physics.
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Introduction
Fig. 1. : A localized surface plasmon[1]
localized surface plasmon resonance (LSPR) can
cause large enhancements in the electric field[1].
Surface-enhanced Raman spectroscopy (SERS)
and other techniques to measure the dynamics
of a single molecule [2].
[1] K. Willets et al., Annu. Rev. Phys. Chem., 58:267-297(2007) [2] C. Evans et al., J. Nano Lett. , 17. 5646-5652(2017)
green red
𝐸 = 𝐸𝑜
𝐸 = 𝑔(𝜔)𝐸𝑜 𝐸 = 𝑔 𝜔 𝑔(𝜔′
)𝐸𝑜
𝐼𝑆𝐸𝑅𝑆 ∝𝑔4𝐼𝑜](https://image.slidesharecdn.com/180929katsuyashiratorinakatanipresentation-240720194457-7f014545/85/NAKATANI-RIES-The-interaction-of-gold-nanostructure-with-different-laser-polarizations-in-COMSOL-simulation-4-320.jpg)
![6
Experiment side
Method
Fig. 2. Schematic of experiment[4]
785nm
Optical
Chopper
[4] P. Zolotavin et al., J. Nanoscale, 9. 9160-9166(2017)
Measured the photothermoelectric
effect of gold nanostructures.](https://image.slidesharecdn.com/180929katsuyashiratorinakatanipresentation-240720194457-7f014545/85/NAKATANI-RIES-The-interaction-of-gold-nanostructure-with-different-laser-polarizations-in-COMSOL-simulation-6-320.jpg)
NAKATANI RIES白鳥最終プレゼン「The interaction of gold nanostructure with different laser polarizations in COMSOL simulation」
- 1. NAKATANI RIES 2018 １ K. Shiratori,1,* M. Abbasi,2 C. Evans,3 and D. Natelson2,3 1 Dept. of Phys. Sci., Ritsumeikan Univ. 2 Dept. of Elec. and Comp. Eng., Rice Univ. 3 Dept. of Phys. and Astro., Rice Univ. The interaction of gold nanostructures with different laser polarizations in COMSOL simulation
- 2. Contents 2 Plasmonics : Study and Application of Plasmons Objective Approaches : Experimental and Simulation Results & Discussion Impressions Next Steps
- 3. 3 Introduction LASER LASER Free electrons behave as a fluid. these electrons oscillate collectively, causing ripples like water. Surface Plasmon Resonance (SPR) A resonance between plasmons and the electric field Plasmons the collective oscillation Surface Plasmon Polariton (SPP) plasmons and the electric field
- 4. 4 Introduction Fig. 1. : A localized surface plasmon[1] localized surface plasmon resonance (LSPR) can cause large enhancements in the electric field[1]. Surface-enhanced Raman spectroscopy (SERS) and other techniques to measure the dynamics of a single molecule [2]. [1] K. Willets et al., Annu. Rev. Phys. Chem., 58:267-297(2007) [2] C. Evans et al., J. Nano Lett. , 17. 5646-5652(2017) green red 𝐸 = 𝐸𝑜 𝐸 = 𝑔(𝜔)𝐸𝑜 𝐸 = 𝑔 𝜔 𝑔(𝜔′ )𝐸𝑜 𝐼𝑆𝐸𝑅𝑆 ∝𝑔4𝐼𝑜
- 5. 5 To simulate the thermoelectric detection of SPP in gold nanostructures Objective
- 6. 6 Experiment side Method Fig. 2. Schematic of experiment[4] 785nm Optical Chopper [4] P. Zolotavin et al., J. Nanoscale, 9. 9160-9166(2017) Measured the photothermoelectric effect of gold nanostructures.
- 7. 7 Experiment side Method Fig. 3. Photothermoelectric (PTE) map under (a) 0° and (b) 90° laser polarization. a b E E
- 8. Simulation side Method 3D modeling of the sample with smooth edges A cross-platform finite element analysis, solver and multiphysics simulation software SiO2 Gold Perfectly Matched Layer (PML) Mesh Plane Wave 8
- 9. 9 Total field Polarization along x-axis Polarization along z-axis Results & Discussion a1 b1 E E Fig. 4. Simulation results: Total field of the device under 0° polarization a1 and under 90° polarization b1
- 10. 10 Energy absorption Polarization along x-axis Polarization along z-axis Results & Discussion a2 b2 E E Fig. 5. Simulation results: Energy absorption of the device under 0° polarization a2 and under 90° polarization b2
- 11. 11 The U.S. is huge, adventurous and interesting!! Impressions
- 12. 12 Next Steps ✔️ Apply for Rice University, Applied Physics
Editor's Notes
- #4: 金属表面の自由電子が、入射してきた光の電場振動などと共鳴して集団振動を起こす現象を表面プラズモン共鳴と呼ぶ SPR is the phenomenon that free electron on the surface of metal oscillates in a group by resonating electric field of incidents 金属ナノ粒子や金属表面のナノ構造の場合、入射角度にほとんど依存せずSPRが起こる。 これを局所表面プラズモン共鳴と呼ぶ。 Nano-metal particle and nano-structure of the surface of metal, SPR happens almost regardless of incident’s angle. That is LSPR