Question

Discuss any two properties of carbon nano-tubes.

Answer 1

The two properties of carbon nanotubes are as follows:
Hardness: Hardness of a standard SWNT is about $25\times {10}^9$ pascal (PA) while its bulk modulus is higher than diamonds. The $C_{60}$ fullerene in a crystalline form known as 'Fullerites', are prepared under high pressure and in high-temperature conditions. They have remarkable mechanical properties, and hence, they are also named as 'Ultrahard Fullerites'.
Electrical: Metallic nanotubes can carry an electrical current of ${10}^9$ Ampere per $1c{m}^3$ cross-section of the tube, which is $1000$ times more than the conducting copper metal. MWNT also show superconductivity up to the temperature of $12$K.