Sharp end, multi-layer carbon nano-tube radial aggregate and method of manufacturing the aggregate
| 外国特許コード | F110005329 |
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| 整理番号 | IAC-13-10US |
| 掲載日 | 2011年8月31日 |
| 出願国 | アメリカ合衆国 |
| 出願番号 | 49545902 |
| 公報番号 | 20050037150 |
| 公報番号 | 7261941 |
| 出願日 | 平成14年11月5日(2002.11.5) |
| 公報発行日 | 平成17年2月17日(2005.2.17) |
| 公報発行日 | 平成19年8月28日(2007.8.28) |
| 国際出願番号 | JP2002011516 |
| 国際公開番号 | WO2003057620 |
| 国際出願日 | 平成14年11月5日(2002.11.5) |
| 国際公開日 | 平成15年7月17日(2003.7.17) |
| 優先権データ |
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| 発明の名称 （英語） | Sharp end, multi-layer carbon nano-tube radial aggregate and method of manufacturing the aggregate |
| 発明の概要（英語） |
(US7261941) A method of manufacturing a acute tip, multi-wall carbon nanotube radial aggregate, comprising the steps of leading a graphite rod into plasma flame generated in a hydrogen-added inert gas atmosphere to evaporate carbon from the graphite rod and stacking, on the surface of the graphite rod, the acute tip, multi-wall carbon nanotube radial aggregation of novel carbon nano-structure useful as field emission electron sources such as probes for STM and APM, display elements, and displays. |
| 特許請求の範囲（英語） |
[claim1] 1. An acute closed tip, multi-wall carbon nanotube radial aggregate, which includes a plurality of acute tip, multi-wall carbon nanotubes which each have one sharp, acute angled-end and are radially aggregated with the acute tip portion thereof being disposed outward. [claim2] 2. The acute tip, multi-wall carbon nanotube radial aggregate described in claim 1 wherein the diameter of the innermost carbon nanotube of the acute tip, multi-wall carbon nanotube is approximately 0.4 nm. [claim3] 3. The acute tip, multi-wall carbon nanotube radial aggregate described in claim 1, wherein the acute tip portion of the acute tip, multi-wall carbon nanotube has a conical shape and a tip-end angle of the acute tip portion is 40 deg. or less. [claim4] 4. The acute tip, multi-wall carbon nanotube radial aggregate described in claim 3, wherein the acute tip portion of the acute tip, multi-wall carbon nanotube has a conical shape and the apex of the cone is located at one of a position along the axis of the acute tip, multi-wall carbon nanotube, a position along an extension of the tube wall, and a position therebetween. [claim5] 5. The acute tip, multi-wall carbon nanotube radial aggregate described in claim 1, wherein the diameter of the aggregate is in a range of 1 to 5 mu m. [claim6] 6. A film of acute tip, multi-wall carbon nanotube radial aggregate, which includes a plurality of the acute tip, multi-wall carbon nanotube, radial aggregates described in claim 1, which aggregates are stacked to form a film. [claim7] 7. The film of acute tip, multi-wall carbon nanotube radial aggregate according to claim 6, wherein the thickness of the film of the acute tip, multi-wall carbon nanotube radial aggregate is in a range of 20 to 150 mu m. |
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| 国際特許分類(IPC) |
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日本語項目の表示
| 発明の名称 | 鋭端多層カーボンナノチューブ放射状集合体とその製造方法 |
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