Carbon nanotubes (CNT) are a class of nanomaterials that consist of a two-dimensional hexagonal lattice of carbon atoms, bent and joined in one direction so as to form a hollow cylinder.
Carbon nanotubes are composed of carbon atoms linked in hexagonal shapes, with each carbon atom covalently bonded to three other carbon atoms. Carbon nanotubes have diameters as small as 1 nm and lengths up to several centimeters. Although, like buckyballs, carbon nanotubes are strong, they are not brittle. They can be bent, and when released, they will spring back to their original shape.
One type(a) of carbon nanotube has a cylindrical shape with open ends.
Another type (b)of nanotube has closed ends, formed by some of the carbon atoms combining into pentagons on the end of the nanotube.
(a)
(b)
Carbon nanotubes are composed of carbon atoms linked in hexagonal shapes, with each carbon atom covalently bonded to three other carbon atoms. Carbon nanotubes have diameters as small as 1 nm and lengths up to several centimeters. Although, like buckyballs, carbon nanotubes are strong, they are not brittle. They can be bent, and when released, they will spring back to their original shape.
One type(a) of carbon nanotube has a cylindrical shape with open ends.
Another type (b)of nanotube has closed ends, formed by some of the carbon atoms combining into pentagons on the end of the nanotube.
(a)(b)
Reference
https://www.understandingnano.com/what-are-carbon-nanotubes.html
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