| Morphologies and microstructures of carbon nanotubes prepared by self—sustained arc discharging |
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| 引用本文： | 唐东升,周维亚,慈立杰,闫小琴,袁华军,周振平,梁迎新,刘东方,刘维.Morphologies and microstructures of carbon nanotubes prepared by self—sustained arc discharging[J].中国物理 B,2002,11(5):496-501. |
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| 作者姓名： | 唐东升 周维亚 慈立杰 闫小琴 袁华军 周振平 梁迎新 刘东方 刘维 |
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| 作者单位： | Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| 摘 要： | We have investigated the morphology and microstructure of carbon nanotubes and nanoparticles in cathode deposits prepared by self-sustained arc discharge. Scanning electron microscopy images indicate that there are two regions exhibiting different morphologies on the top surface of the cathode deposits. In the central region, there is a triangular pattern of spots with a diameter up to 100μm, which consists of carbon nanotubes and nanoparticles. In the fringe region, carbon nanotubes and nanoparticles are distributed randomly. In addition, carbon nanotubes in the central region have a larger inner diameter, compared with those in the fringe region. The outer diameter distribution of tubes in the central region is narrower than that of tubes in the fringe region, while the former has a smaller peak value than the latter. For the nanoparticles, they exhibit a different behaviour from the tubes existing in the same region. The difference between the microstructure of tubes or particles in the two regions is attributed to the different temperatures and temperature gradients during their formation.
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| 关 键 词： | 碳毫微管 微结构 孤光放电 |
| 收稿时间： | 2001-11-05 |
Morphologies and microstructures of carbon nanotubes prepared by self-sustained arc discharging |
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| Tang Dong-Sheng,Zhou Wei-Y,Ci Li-Jie,Yan Xiao-Qin,Yuan Hua-Jun,Zhou Zhen-Ping,Liang Ying-Xin,Liu Dong-Fang and Liu Wei.Morphologies and microstructures of carbon nanotubes prepared by self-sustained arc discharging[J].Chinese Physics B,2002,11(5):496-501. |
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| Authors: | Tang Dong-Sheng Zhou Wei-Y Ci Li-Jie Yan Xiao-Qin Yuan Hua-Jun Zhou Zhen-Ping Liang Ying-Xin Liu Dong-Fang and Liu Wei |
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| Institution: | Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | We have investigated the morphology and microstructure of carbon nanotubes and nanoparticles in cathode deposits prepared by self-sustained arc discharge. Scanning electron microscopy images indicate that there are two regions exhibiting different morphologies on the top surface of the cathode deposits. In the central region, there is a triangular pattern of spots with a diameter up to 100μm, which consists of carbon nanotubes and nanoparticles. In the fringe region, carbon nanotubes and nanoparticles are distributed randomly. In addition, carbon nanotubes in the central region have a larger inner diameter, compared with those in the fringe region. The outer diameter distribution of tubes in the central region is narrower than that of tubes in the fringe region, while the former has a smaller peak value than the latter. For the nanoparticles, they exhibit a different behaviour from the tubes existing in the same region. The difference between the microstructure of tubes or particles in the two regions is attributed to the different temperatures and temperature gradients during their formation. |
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| Keywords: | carbon nanotube arc discharge microstructure |
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