The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2010
Filed:
Jul. 14, 2006
Mark Thomas Lusk, Highlands Ranch, CO (US);
G. Louis Hornyak, Ft. Collins, CO (US);
Michael Thomas Burke, Arvada, CO (US);
Mark Thomas Lusk, Highlands Ranch, CO (US);
G. Louis Hornyak, Ft. Collins, CO (US);
Michael Thomas Burke, Arvada, CO (US);
Colorado School of Mines, Golden, CO (US);
Abstract
The invention provides CVD-based methods for growing single-walled or multi-walled carbon nanotubes. In the methods of the invention, the nanotube growth environment is separated from the carbon-containing gas feed environment using a membrane which is substantially impermeable to gas flow but permits diffusion of carbon through the membrane. A catalyst for carbon nanotube growth is located on the growth side of the membrane while a catalyst for decomposition of carbon-containing gas is located on the feed side of the membrane. A path for diffusion of carbon through the membrane is provided between the growth and decomposition catalysts. Control of the size and shape of the carbon nanotube growth catalyst enables control over the nanotube structure formed.