Essay on Different Types of Carbon Nanotubes

Essay on Different Types of Carbon Nanotubes

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Carbon nanotubes (CNTs) are allotropes of carbon with a cylindrical nanostructure. Their radius is generally in the range of a few nanometers. It is a hollow structure with the walls formed by one-atom-thick sheets of carbon, called grapheme, and thus belong to the fullerene structural family forming from a single structural component. The difference in the types of CNTs id formed on the basis of the specific angle at which the graphene sheet is rolled. Hence there are three types of nanotubes based on the rolling angle:-
1. Armchair
2. Zigzag
3. Chiral
On the basis of number of CNTs encased:-
1. Single-walled nanotubes(SWNTs)
2. Multi-walled nanotubes (MWNTs)
Properties
Individual nanotubes naturally align themselves into "ropes" held together by van der Waals forces called pi-stacking.
They are very stiff with tensile stregnths in 13-60 Gpa range though, they cannot bear compressive stress and break easily when force in radial direction is applied.
They can be conductive or semi-conductive based on the type of CNT, and are generely anisotropic in nature.All nanotubes are very ...

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