6. What is graphene?
âȘ It is a single layer of Graphite (pure crystaline carbon)
âȘ Graphite was discovered in 1564 at Seathwaite (Borrowdale), Northumberland
Left: Tall graphite mine,
near Seathwaite, England CA12 5XJ
Oldest surviving pencil circa 17th
Cent.
7. What is graphene?
âȘ It is a single layer of Graphite (pure crystaline carbon)
âȘ Graphite was discovered in 1564 at Seathwaite (Borrowdale), Northumberland
âȘ âGrapheneâ was first isolated in the lab by Professor Andre Geim with former
student Konstantin Novoselov at the University of Manchester, England in 2004
âSir Andre K. Geim, FRS
andre.k.geim@manchester.ac.uk +44(0)161 275-4120
konstantin.novoselov@manchester.ac.uk +44(0)161 275-4119
Schuster Building, Rooms 2.10 & 2.11
The School of Physics and Astronomy
The University of Manchester
Manchester, M13 9PL
Sir âKostyaâ Novoselov, FRSâș
The University of
8. What is graphene?
âȘ It is a single layer of Graphite (pure crystaline carbon)
âȘ Graphite was discovered in 1564 at Seathwaite (Borrowdale), Northumberland
âȘ âGrapheneâ was first isolated in the lab by Professor Andre Geim with former
student Konstantin Novoselov at the University of Manchester, England in 2004
2010 Nobel Prize
for âgroundbreaking experiments
regarding the two-dimensional
material grapheneâ
(Both were later Knighted, twice)
9. What is graphene?
âȘ It is a single layer of Graphite (pure crystaline carbon)
âȘ Graphite was discovered in 1564 at Seathwaite (Borrowdale), Northumberland
âȘ âGrapheneâ was first isolated in the lab by Professor Andre Geim with former
student Konstantin Novoselov at the University of Manchester, England in 2004
âȘ Graphene is among several allotropes (forms) of carbon
Forms of carbon:
a) graphite 3D
b) diamond 3D
c) Buckminsterfullerene âBuckyballsâ 0D
d) carbon nanotube 1D
e) graphene 2D
Although graphene is the first Two-
dimensional crystal ever discovered,
there are several new 2D materials
including MoS2, WSe2, W2S, BN, and
SiC which can be used with
graphene to make new hybrid
electronic devices.
11. The Amazing Properties of graphene
âȘ It is the thinnest material imaginable (~0.345 nm thick). [2,3]
âȘ It is the strongest material ever measured.
âș200x stronger than steel (~1,100TPa/125 GPa) [5]
âșStiffer than diamond [2,3]
âȘ It is electrically conductive â best known so far. [2,3]
âș1,000,000x more conductive than copper (current density @ room temp.) [6]
âȘ Electrons behave as light inside graphene (âMassless Dirac fermionsâ). [7]
âȘ It conducts heat even better than diamond (~5000 W m-1
K-1
). [10]
âȘ Tunable electronic properties (bandgap for transistors, FETs). [2,3,8]
âȘ It is flexible & stretchable: The first elastic 2D crystal. [5]
âȘ Good for flexible, wearable devices. [2,3]
âȘ It is transparent: One atom-thick layer sheet absorbs ~2.3% visible light (Ïα). [11]
âȘ Replacement for ITO, Solar cells, touchscreens, new computers, batteries, etc. [3]
12. The Amazing Properties of graphene
http://www.scientificamerican.com/article/balancing-act/
@qikipedia â âIt would take an
elephant, balanced on a pencil to
break through a sheet of graphene
the thickness of cling film.â
Illustration by Matt Collins
13. The Uses of graphene
âȘ Head tennis racquet (Andy Murray, Maria Sharapova, Novak Djokovic and Gilles Simon)
âȘ Security devices printed inside cardboard layers (Vorbeck Materials/MeadWestvaco)
(And the patents are growing exponentially)
14. The Future of graphene Recently, researchers at IBM (Watson) demonstrated a RF graphene IC chip that
received a text message 1000x faster than current silicon chips that are used today. [12]
15. The Future of graphene
âȘ Nokia G-Flexâą
, Morphâą
âȘ Samsung Galaxy Skinâą
âȘ Supercapacitor batteries
âȘ Water filters
âŠ
16. With all the amazing properties of graphene,With all the amazing properties of graphene,
there is little wonderthere is little wonder itit isis the Wonder materialthe Wonder material
of the 21of the 21stst
CenturyCentury
17. List of References
1. Novoselov, K. S.,. et al., âElectric Field Effect in Atomically Thin Carbon Filmsâ, Science 306, 666-669 (2004).
2. Novoselov, K. S., Fal'ko, V. I., Colombo, L., Gellert, P. R., Schwab, M. G. & Kim, K., âA Roadmap for Grapheneâ, Nature 490,
192-200 (2012).
3. Geim, A. K. & Novoselov, K. S., âThe Rise of Grapheneâ, Nature Materials 6, 183-191 (2007).
4. Morozov, A. S., et al., âMicrometer-scale ballistic transport in encapsulated graphene at room temperatureâ, Nano Lett. 11, 2396-
2399 (2011).
5. Lee, C., et al., âMeasurement of the elastic properties and intrinsic strength of monolayer grapheneâ, Science 321, 385-388 (2008).
6. Moser, J., Barrieiro, A., & Bachtold, A., âCurrent-induced cleaning of grapheneâ, Appl. Phys. Lett. 91, 163513 (2007).
7. Novoselov, K. S., et al., âTwo-dimensional gas of massless Dirac fermions in grapheneâ, Nature 438, 197-200 (2005).
8. Yavari, F., et al., âTunable Bandgap in Graphene by the Controlled Adsorption of Water Moleculesâ, Small 6, 2535-2538 (2010).
9. Zhang, Y., et al., âDirect observation of a widely tunable bandgap in bilayer grapheneâ, Nature 459, 820-823 (2009).
10. Galavdin, A., âThermal properties of graphene and monostructured carbon materialsâ, Nature Matter. 10, 569-581 (2011).
11. Nair, R. R., et al., âFine structure constant defines visual transparency of grapheneâ, Science 320, 1308 (2008).
12. Han, S., Garcia, A. V., Oida, S., Jenkins, K. A. & Haensch, W., âGraphene radio frequency receiver integrated circuitâ, Nature
Communications 5, (2014)