Carbon nanotube (CNT) is the allotropes of carbon with a cylindrical nanostructure. These cylindrical carbon molecules have unfamiliar properties, which are valuable for nanotechnology, electronics, optics and other fields of materials science and technology. Owing to the material's exceptional strength and rigidness, nanotubes have been constructed with length-to-diameter ratio of up to 132,000,000:1, significantly larger than for any other material.
In addition, owing to their remarkable thermal conductivity, mechanical, and electrical properties, carbon nanotubes find applications as additives to various structural materials. For instance, nanotubes form a nanoscopic portion of the material(s) in some (primarily carbon fibre) baseball bats, golf clubs, car parts or Damascus steel.