Graphene ppt
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Graphene is a two-dimensional material made of carbon atoms arranged in a honeycomb lattice. It was first isolated and characterized in 2004. Some key properties of graphene include its strength, flexibility, conductivity, and ability to self-repair. Potential applications of graphene mentioned in the document include ultra-fast electronics, DNA sequencing, batteries, desalination membranes, bulletproof materials, and medical devices. Graphene is seen as an important material that could enable many new technologies in the 21st century due to its unique properties and low cost of production.
Graphene ppt
- 1. GRAPHENE The Miracle Material of 21st Century Material Miracle of 21st Century ISHAAN SANEHI AND SHUSHMA DEVALLA 3RD SEMESTER CHEMICAL ENGINEERING
- 2. Features
- 4. Discovery • Studies on graphite layers for past hundred years • Graphene theory first explored by P.R. Wallce (1947) • Andre Geim & Kontantin Novoselov Nobel Peace Prize (2010) • Physics observed using TEM http://www.telegraph.co.uk/science/science-news/8043355/Nobel-Prize-for- Physics-won-by-Andre-Geim-and-Konstantin-Novoselov.html http://powerlisting.wikia.com/wiki/File:Graphite.jpg
- 5. Graphene is a crystalline allotrope of carbon with 2-dimensional properties. Its carbon atoms are densely packed in a regular atomic- scale chicken wire (hexagonal) pattern. Each atom has four bonds, one σ bond with each of its three neighbors and one π-bond that is oriented out of plane. The atoms are about 1.42 Å apart Graphene can self-repair holes in its sheets, when exposed to molecules containing carbon, such as hydrocarbons. Bombarded with pure carbon atoms, the atoms perfectly align into hexagons, completely filling the holes
- 6. • Mega-fast uploads • Charging up in just 5 seconds • It could improve your Sports e.g Tennis • Making salt water safe for consumption. • Touchscreens that use graphene as their conductor could be slapped onto plastic rather than glass. • Graphene could pave the way for bionic devices in living tissues that could be connected directly to your neurons.
- 7. Graphene & DNA Sequencing Today’s sequencing techniques involve chopping up DNA, making many copies of the pieces, and reading fluorescent molecules attached to them. A thinner membrane, such as graphene, might allow for more accurate base identification. “The thinnest membrane that has ever been applied to this problem,” says Jene Golovchenko
- 8. • Hardest substance but flexible • Light weight • Very inexpensive • not brittle • Can be used in either of the electronic gadgets. Due to the substance conductivity can be used as a mobile screen. INDIUM TIN OXIDE-rare and brittle graphene-conducticity easily sense the tip of fingers Instead of indium tin oxide, graphene easily sense tip of fingers
- 9. Graphene can make batteries that are light, durable and suitable for high capacity energy storage, as well as shorten charging times. The new supercapacitor’s ultra-quick charging time also costs less than a traditional lithium ion battery over the course of its lifetime, due to its unique ability to withstand more recharges without losing strength. *The resulting battery can store 10 times more power than ones that utilize graphite anodes.
- 10. De-salination to Drinking Water Graphene here is used as a filter with nano size holes to let pass the water molecules and block the much larger salt molecules.
- 12. Trending Future Applications- • Bulletproof Wear • Bulletproof Glass • Replacing D30 sort of expensive items • NeuroScience- • DNA Sequencing • Technology- • MOTH Eyes • Smart Contact Lenses
- 13. COURSE OUTCOME • The topic enable us to know about graphene and its maricle properties. • It helps us to know the technique of synthesising graphene • It helps us to know the various application of graphene • It details us about the importance of Graphene and its significance in the upcoming era