Growth and Characterization of Carbon Nanowalls(Special Issue on Field Electron Emission from Carbon Materials)
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概要
- 論文の詳細を見る
A type of carbon nanoform (carbon nanowalls: CNWs) has been successfully deposited on both Ni wafers and Ni wires using dc plasma chemical-vapor-deposition (CVD) method. Transmission electron microscopy (TEM) and Raman spectroscopy were used to characterize CNWs' microstructure. It is found that CNWs are well crystallized, and each CNW consists of several pieces of curved graphene sheets, presenting a quasi-two-dimensional geometry. The average length and width of CNWs are about 2-4μm, while their thickness is less than 7nm. Field emission measurement showed that such CNWr films exhibited the excellent electron emission efficiency, comparable to the high-grade carbon nanotube (CNT) emitters. The thresh-old field defined as the field to obtained 1μA/cm^2 is less than 1 V/μm and the electrical field for 1 mA/cm^2 current density is only about 1.5V/μm. Moreover, the CNWs have stable emission behaviors, and we have successfully fabricated a kind of high-brightness lamps based on the CNW coated Ni wires.
- 社団法人電子情報通信学会の論文
- 2003-05-01
著者
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Hiraki A
Faculty Of Engineering University Of The Ryukyus
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JIANG Nan
Department of Electrical and Electronic Engineering, The University of Tokushima
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Jiang N
Department Of Electrical And Electronic Engineering The University Of Tokushima
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Jiang Nan
Department Of Electrical Engineering Faculty Of Engineering Osaka University
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Jiang Nan
Department Of Electrical And Electronic Engineering The University Of Tokushima
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NISHIMURA Kazuhito
Kochi Prefectural Industrial Technology Center
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HIRAKI Akio
Kochi University of Technology
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Nishimura Kazumi
Ntt System Electronics Laboratories
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Hiraki A
Kochi Univ. Technol. Kochi‐ken Jpn
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Nishimura K
Kddi R&d Laboratories Inc.:optical Industry And Technology Development Association
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NISHIMURA Kazutoshi
NTT Human Interface Laboratories
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Nishimura Kazuhiro
Department Of Electrical & Electronic Engineering. Toyohashi University Of Technology
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Nishimura K
Kochi Prefectural Industrial Technology Center
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