论文部分内容阅读
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.Carbon nanotubes can be open-ended or closed-ended(fullerenes).Open-ended single-walled carbon nanotubes are also called tubulenes.