Carbon-nanotube coated cold cathodes for applications to power modulators

Y. Tzeng, C. Liu, Y. Chen

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Carbon nanotubes were grown on electrodes by means of catalytic thermal chemical vapor deposition in gas mixtures of acetylene and argon. The very large aspect ratio and the very small radius of curvature at the tip of each carbon nanotube are coupled with the highly conductive graphitic walls of carbon nanotubes making them excellent electron field emitters for a wide variety of applications. Electron field emitters serve as cold cathodes and are suitable for replacing hot cathodes that are based on thermionic electron emission for many applications. In this paper, methods of fabricating aligned carbon-nanotube cold cathodes and their electron field emission characteristics and applications for non-contact power coupling, electron controlled switches, and vacuum electronics are discussed.

Original languageEnglish
Pages (from-to)399-402
Number of pages4
JournalConference Record of the International Power Modulator Symposium and High Voltage Workshop
Publication statusPublished - 2004 Dec 1
Event2004 IEEE International Power Modulator Conference: 26th International Power Modulator Symposium and 2004 High Voltage Workshop - San Francisco, CA, United States
Duration: 2004 May 232004 May 26

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Modulators
Carbon nanotubes
Cathodes
Electrons
Electron emission
Acetylene
Gas mixtures
Field emission
Argon
Aspect ratio
Chemical vapor deposition
Electronic equipment
Switches
Vacuum
Electrodes

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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AU - Liu, C.

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N2 - Carbon nanotubes were grown on electrodes by means of catalytic thermal chemical vapor deposition in gas mixtures of acetylene and argon. The very large aspect ratio and the very small radius of curvature at the tip of each carbon nanotube are coupled with the highly conductive graphitic walls of carbon nanotubes making them excellent electron field emitters for a wide variety of applications. Electron field emitters serve as cold cathodes and are suitable for replacing hot cathodes that are based on thermionic electron emission for many applications. In this paper, methods of fabricating aligned carbon-nanotube cold cathodes and their electron field emission characteristics and applications for non-contact power coupling, electron controlled switches, and vacuum electronics are discussed.

AB - Carbon nanotubes were grown on electrodes by means of catalytic thermal chemical vapor deposition in gas mixtures of acetylene and argon. The very large aspect ratio and the very small radius of curvature at the tip of each carbon nanotube are coupled with the highly conductive graphitic walls of carbon nanotubes making them excellent electron field emitters for a wide variety of applications. Electron field emitters serve as cold cathodes and are suitable for replacing hot cathodes that are based on thermionic electron emission for many applications. In this paper, methods of fabricating aligned carbon-nanotube cold cathodes and their electron field emission characteristics and applications for non-contact power coupling, electron controlled switches, and vacuum electronics are discussed.

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