Work function at the tips of multiwalled carbon nanotubes
Work function at the tips of multiwalled carbon nanotubes
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DOI：
10.1063/1.1356442
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发表时间：
2001-03-19
影响因子：
4
通讯作者：
Wang, ZL
中科院分区：
文献类型：
--
作者：
Gao, RP;Pan, ZW;Wang, ZL
在个别多壁碳纳米管的尖端的功函数已被测量的原位透射电子显微镜技术。针尖功函数在14-55 nm范围内对纳米管的直径没有明显的依赖性。大多数纳米管在尖端处具有4.6-4.8 eV的功函数，这比碳的功函数低0.2-0.4 eV。一小部分纳米管的功函数接近5.6eV，比碳的功函数高0.6eV。这种差异是由于纳米管的金属和纳米管的特性而提出的。(C)2001年美国物理学会。
The work function at the tips of individual multiwalled carbon nanotubes has been measured by an in situ transmission electron microscopy technique. The tip work function shows no significant dependence on the diameter of the nanotubes in the range of 14-55 nm. Majority of the nanotubes have a work function of 4.6-4.8 eV at the tips, which is 0.2-0.4 eV lower than that of carbon. A small fraction of the nanotubes have a work function of similar to5.6 eV, about 0.6 eV higher than that of carbon. This discrepancy is suggested due to the metallic and semiconductive characteristics of the nanotube. (C) 2001 American Institute of Physics.