US Patent 7132126 - Room Temperature Synthesis of Multiwalled Carbon Nanostructures

http://www.freepatentsonline.com/7132126.pdf

Usually carbon nanotube, buckyball or other fullerene fabrication requires high temperature and low pressure. This patent is based on a sonication method used to form multilayered carbon nanostructures in solution at room temperature and standard pressure. Claim 1 reads:

1. A method for the synthesis of carbon nanostructures comprising the step of reacting non-carbon silicon nanostructures in an organic solvent, wherein said non-carbon silicon nanostructures and said organic solvent are subjected to bath sonication.