Analytical model for electron field emission from capped carbon nanotubes

被引：5
|
作者：
Filip, V
Nicolaescu, D
Tanemura, M
Okuyama, F
机构：
[1] AIST, Nanoelect Res Inst, Tsuchiura, Ibaraki 3058568, Japan
[2] Univ Bucharest, Fac Phys, Bucharest 76900, Romania
[3] Nagoya Inst Technol, Dept Environm Technol, Showa Ku, Nagoya, Aichi 4668555, Japan
来源：
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 2004年 / 22卷 / 03期
关键词：
D O I：
10.1116/1.1752902
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This article presents a model of electron field emission from quantum states arising from the tight confinement of quasi-free electrons on a nanotube hemispherical cap. The model outlines the possibility of inhomogeneous electron field emission for very thin carbon nanotubes at high emission levels and the appearance of peculiar ring-shaped field emission images. The conclusions qualitatively agree with existing experimental evidence, therefore supporting the hypothesis that part of the electrons on the cap of the emitter may behave as quasi-free in a high emission level/high-temperature regime. (C) 2004 American Vacuum Society.
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收藏
页码：1234 / 1239
页数：6
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