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化学学报
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化学学报 ›› 2003, Vol. 61 ›› Issue (3): 316-319. 上一篇    下一篇

研究论文

碳离子辐照碳纳米管形成无定形纳米线

王震遐;丁印锋;李玉兰;余礼平;张伟;朱德彰;朱志远;徐洪杰;陈一;何国伟;胡刚   

  1. 中国科学院上海原子核研究所;复旦大学材料科学系
  • 发布日期:2003-03-15

Amorphous Nanowires Produced by Carbon Ion Irradiation on Multi- walled Carbon Nanotubes

Wang Zhenxia;Ding Yinfeng;Li Yulan;Yu Liping;Zhang Wei;Zhu Dezhang;Zhu Zhiyuan;Xu Hongjie;Chen Yi;He Guowei;Hu Gang   

  1. Shanghai Institute of Nuclear Research,Chinese Academy of Sciences;Department of Material Science,Fudan University
  • Published:2003-03-15

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被引次数

7 | 1

利用40keV的c~+离子辐照（辐照剂量为1×10~16／cm~2）CVD合成的多壁碳纳 米管样（HRTEM）分析时发现了一些有趣现象：其一，多壁碳纳米管在辐照时，其 结构不但无定形化，而且有无定形纳米线和的相互转变区出现；其二，辐照可以使 交叉的碳纳米线产生"焊接"现象．对这些现象产生的机制给出了定性的讨论．

关键词: 碳, 纳米相材料, 离子束, 辐照

After being irradiated by carbon ions with the energy of 40 keV at the fluence of 10~(16)/cm~(-2) , many of multi-walled carbon nanotubes evolved into amorphous carbon nanowires and amorphous nanotubes. In some irradiated nanotubes, it can be found that transition areas of amorphous nanotubes and amorphous nanowires coexist. Moreover, during this evolving process, some crossed nanotubes were welded together, and these welded junctions may have great applications in nanotube/molecular electronics. Meanwhile, the mechanism on the appearance of this phenomenon was also discussed qualitatively.

Key words: CARBON, NANOPHASE MATERIALS, ION BEAMS, IRRADIATION

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