Carbon Nanotubes

Carbon nanotubes are hollow cylinders made of graphite carbon atoms with nanoscale (10?9 m) which is much smaller than the human hair width. Single-wall carbon nanotubes are one of the allotropes of carbon, intermediate between fullerene cages and flat graphene, with diameters in the range of a nanometre. Carbon nanotubes (CNTs) emerged in the field of nanotechnology because of their nanosize and unique properties.

Carbon nanotubes (CNTs) are considered a promising nanomaterial for diverse applications owing to their attractive physicochemical properties such as high surface area, superior mechanical and thermal strength, electrochemical activity, and so on.

They have been first used as additives to various structural materials for electronics, optics, plastics, and other materials of nanotechnology fields. Since the beginning of the 21st century, they have been introduced in pharmacy and medicine for drug delivery system in therapeutics.