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Hot wire production of single-wall carbon nanotubes

United States Patent Application

20040265211
A1
View the Complete Application at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Apparatus (1) for producing a single wall carbon nanotube (12) may comprise a process chamber (16) and a hot wire (18) positioned within the process chamber (16). A power supply (20) operatively associated with the hot wire (18) heats the hot wire (18) to a process temperature. A gaseous carbon precursor material (14) operatively associated with the process chamber (16) provides carbon for forming the carbon nanotube (12). A metal catalyst material (24) contained within the process chamber (16) catalyzes the formation of the carbon nanotube (12). A process enhancement gas (22), such as hydrogen, may be employed.
Dillon, Anne C. (Boulder, CO), Mahan, Archie Harvin (Golden, CO)
10/ 499,211
June 14, 2004
[0001] The United States Government has rights in this invention pursuant to Contract No. DE-AC36-99GO10337 between the U.S. Department of Energy and the Midwest Research Institute.