| Effects of N2 and glow discharge on growth behaviours of carbon nanotubes prepared by the hot filament chemical vapour deposition method |
| |
| 作者姓名： | 王必本 顾长志 窦艳 王国菊 李海均 朱满康 |
| |
| 作者单位： | State Key Laboratory of Surface Physics, Institute of Physics, Chinese Academe of Sciences, Beijing 100080, China; College of Applied Mathematics and Physics, Beijing University of Technology, Beijing 100022, China; Quantum Materials Laboratory, Beijing U;State Key Laboratory of Surface Physics, Institute of Physics, Chinese Academe of Sciences, Beijing 100080, China;State Key Laboratory of Surface Physics, Institute of Physics, Chinese Academe of Sciences, Beijing 100080, China;Quantum Materials Laboratory, Beijing University of Technology, Beijing 100022, China;State Key Laboratory of Surface Physics, Institute of Physics, Chinese Academe of Sciences, Beijing 100080, China; Quantum Materials Laboratory, Beijing University of Technology, Beijing 100022, China;Quantum Materials Laboratory, Beijing University of Technology, Beijing 100022, China |
| |
| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 60021403) and by the State Key Development Program for Basic Research of China (Grant 2002CB613500). |
| |
| 摘 要： | Carbon nanotubes (CNTs) are prepared by the hot filament chemical vapour deposition method using CH4 and H2 as reaction gases, and the growth behaviours are investigated by scanning electron microscopy and transmission electron microscopy. The results indicate that the CNTs prepared in the absence of N2 or glow discharge are bent; however, they are in an aligned state after introducing N2 into the chamber or forming glow discharge under a negative biased voltage. The results also indicate that the CNTs are of a bamboo-like structure when N2 is intruded as a reaction gas and the alignment degree of the CNTs grown under glow discharge is higher than that grown in N2. This illustrates that the nitric environment and glow discharge play important roles in the growth of CNTs. Combining with the theory related to alloy thermodynamics and collisions, we have analysed the growth mechanism of the CNTs in nitric environment and glow discharge.
|
| 关 键 词： | 碳纳米管 辉光放电 热丝化学气相沉积 氮气 竹状结构 合金热力学 |
| 收稿时间： | 5/9/2003 12:00:00 AM |
Effects of N2 and glow discharge on growth behaviours of carbon nanotubes prepared by the hot filament chemical vapour deposition method |
| |
| Wang Bi-Ben,Gu Chang-Zhi,Dou Yan,Wang Guo-Ju,Li Hai-Jun and Zhu Man-Kang.Effects of N2 and glow discharge on growth behaviours of carbon nanotubes prepared by the hot filament chemical vapour deposition method[J].Chinese Physics B,2003,12(12):1459-1465. |
| |
| Authors: | Wang Bi-Ben Gu Chang-Zhi Dou Yan Wang Guo-Ju Li Hai-Jun and Zhu Man-Kang |
| |
| Abstract: | Carbon nanotubes (CNTs) are prepared by the hot filament chemical vapour deposition method using CH_4 and H_2 as reaction gases, and the growth behaviours are investigated by scanning electron microscopy and transmission electron microscopy. The results indicate that the CNTs prepared in the absence of N_2 or glow discharge are bent; however, they are in an aligned state after introducing N_2 into the chamber or forming glow discharge under a negative biased voltage. The results also indicate that the CNTs are of a bamboo-like structure when N_2 is intruded as a reaction gas and the alignment degree of the CNTs grown under glow discharge is higher than that grown in N_2. This illustrates that the nitric environment and glow discharge play important roles in the growth of CNTs. Combining with the theory related to alloy thermodynamics and collisions, we have analysed the growth mechanism of the CNTs in nitric environment and glow discharge. |
| |
| Keywords: | carbon nanotubes alignment growth nitric environment glow discharge |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|
