US Patent 7850940 - Carbonnitride nanotubes

http://www.freepatentsonline.com/7850940.html

This patent from Korea Advance Institute of Science and Technology teaches a method for controllably manufacturing a form of nanotube based on carbon and nitrogen useful to sensors, batteries, and displays. Claim 1 reads:

1. A method for controlling the size and quantity of pores in C1-xNx nanotube by reacting hydrocarbon gas, nitrogen gas and oxygen gas together in the presence of metal catalyst, wherein x ranges from 0.001 to 0.2, and wherein the size and quantity of pores are controlled by controlling the concentration of nitrogen gas.