Controlling Nanotube Chirality and Crystallinity by Doping

Doping control: Future applications involving carbon nanotubes may only be successful if a high degree of control in the properties of the nanotubes can be obtained. A new technique has been reported that can generate crystalline multiwalled carbon nanotubes at low temperature (<800 °C), and where doped N atoms appear to control nanotube chirality (the picture shows two possible N-doping possibilities).