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Plasma Devices and Operations Volume 17, 2009 - Issue 3
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Original Articles

Generation of microplasma using multiwall carbon nanotubes cathode

Q. Zou State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, People's Republic of ChinaCorrespondence[email protected]
,
Y. G. Li State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, People's Republic of China
,
M. Z. Wang State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, People's Republic of China
,
Y. C. Zhao State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, People's Republic of China
&
L. H. Zou State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, People's Republic of China
Pages 181-190 | Received 19 Dec 2008, Published online: 19 Jun 2009
 
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Abstract

Microplasma was produced in argon gas in a scanning electron microscope at near-atmospheric pressure using a multi-wall carbon nanotube (CNT) film as a cathode. It is demonstrated that with the CNT film used as a cathode, the breakdown voltage was much lower than the breakdown voltage when the conventional cathode made of flat metal film was used and the discharge was highly reproducible. These features of the gas discharge are defined by the field emission from the CNT cathode.

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