<P>An efficient electron source is developed by using a micro-machined mesh grid having opening ratio of 67% as an extraction gate for a triode-type field emitter, the cathode of which is a film of vertically-aligned carbon nanotubes (VACNTs) th...
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https://www.riss.kr/link?id=A107545145
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2014
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SCI,SCIE,SCOPUS
학술저널
06JM09
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>An efficient electron source is developed by using a micro-machined mesh grid having opening ratio of 67% as an extraction gate for a triode-type field emitter, the cathode of which is a film of vertically-aligned carbon nanotubes (VACNTs) th...
<P>An efficient electron source is developed by using a micro-machined mesh grid having opening ratio of 67% as an extraction gate for a triode-type field emitter, the cathode of which is a film of vertically-aligned carbon nanotubes (VACNTs) that are synthesized by a hot-filament chemical-vapordeposition process. The threshold electric field defined for the cathode current of 1 mu A is about 0.27V/mu m. The cathode and the anode currents as large as 250 and 140 mu A, respectively, are obtained at the electric-field strength of 0.44V/mu m. The electron transparency that corresponds to the ratio of the anode current and the cathode current is approximately 60% for anode currents larger than about 2 mu A regardless of anode-bias voltage. (C) 2014 The Japan Society of Applied Physics</P>
Hydrogel-based capillary flow pumping in a hydrophobic microfluidic channel