| 1. It is a two-dimensional material and has good electrical conductivity. |
| 2. It is one of the thinnest but strongest materials tested so far. |
| 3. It is entirely made of silicon and has high optical transparency. |
| 4. It can be used as 'conducting electrodes' required for touch screens LCD and organic LEDs. |
| Which of the statements given above are correct? |
A) 1 and 2
B) 3 and 4
C) 1, 2 and 4
D) 1, 2, 3 and 4
Correct Answer: C
Solution :
[c] Graphene is a member of the class of 2-deminsional material discovered by Professor Andre Geim?s research group at the University of Manchester. The main constituent of grapheme is the graphite and not silicon. The discovery of 2D materials means that scientists now have access to material of all dimensionalities inducting OD-quantum dots atoms and ID-nanowires, carbon nanotubes. Graphene can be used for many different purposes including: Transistors to be operational even at high frequencies. Organic light emitting diodes. Storing hydrogen for fuel cell powered fans. Ultracapacitors with graphene electrodes, etc.
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