Carbon nanotubes

Carbon nanotubes are cylindrical fullerene. Its novel properties find potential applications in different areas like nanotechnology, optics, electronics, material science etc. They are good conductors of heat and exhibit enormous strength. There exist two types of carbon nanotubes-single walled nanotubes and multi walled nanotubes. Single walled carbon nanotubes exhibit superlative electrical properties and is widely used now in modern electronics. The major application of single walled carbon nanotubes is in intramolecular field effect transistors. Multi walled carbon nanotubes exist in two models. They are Russian doll model and parchment model. In the Russian doll model, graphite sheets are arranged in concentric cylinders and in parchment model, a single graphite sheet rolled in around itself.