Method for manufacturing carbon nanotubes
US7625544B2 · kind B2 · utility
10Cited by
2References
20Claims
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Key dates
| Filing date | Jul 11, 2006 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Dec 21, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1089
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A method for manufacturing open-ended carbon nanotubes is described. The method includes steps of: providing a substrate having a catalyst layer formed thereon; placing the substrate in a reaction chamber; introducing a carbon source gas containing carbon element into the reaction chamber for growing carbon nanotubes form the catalyst layer; promptly reducing a concentration of the carbon source gas when the growth of carbon nanotubes in process, thereby ceasing the growth of the carbon nanotubes instantly; and separating the carbon nanotubes from the catalyst layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.