Enhancing the stability of microplasma device utilizing diamond coated carbon nanotubes as cathode materials

Journal Article · Mon Jun 02 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4881419· OSTI ID:22300089

Chang, Tinghsun; Sankaran, Kamatchi Jothiramalingam; Tai, Nyanhwa ^[1]; Kunuku, Srinivasu; Leou, Keh-Chyang ^[2]; Lin, I-Nan ^[3]

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1. Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 300, Taiwan (China)
2. Department of Engineering and System Science, National Tsing-Hua University, Hsinchu 300, Taiwan (China)
3. Department of Physics, Tamkang University, Tamsui 251, Taiwan (China)

This paper reports the enhanced stability of a microplasma device by using hybrid-granular-structured diamond (HiD) film coated carbon nanotubes (CNTs) as cathode, which overcomes the drawback of short life time in the CNTs-based one. The microplasma device can be operated more than 210 min without showing any sign of degradation, whereas the CNTs-based one can last only 50 min. Besides the high robustness against the Ar-ion bombardment, the HiD/CNTs material also possesses superior electron field emission properties with low turn-on field of 3.2 V/μm, which is considered as the prime factor for the improved plasma illumination performance of the devices.

• OSTI ID: 22300089
• Journal Information: Applied Physics Letters, Vol. 104, Issue 22; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ARGON IONS
CARBON NANOTUBES
CATHODES
DIAMONDS
ELECTRONS
EQUIPMENT
FIELD EMISSION
FILMS
ILLUMINANCE
PLASMA
STABILITY