Electric field enhancement factors around a metallic, end-capped cylinder

被引：45

作者：

Podenok, S. ^{[2
]}

Sveningsson, M. ^{[1
]}

Hansen, K. ^{[1
]}

Campbell, E. E. B. ^{[1
]}

机构：

[1] Gothenburg Univ, Dept Phys, SE-41296 Gothenburg, Sweden

[2] Belarusian State Univ, Dept Semicond Phys & Nanoelect, Minsk 220050, BELARUS

来源：

NANO | 2006年 / 1卷 / 01期

关键词：

electron field emission; field enhancement factor; carbon nanotubes; Fowler-Nordheim theory;

D O I：

10.1142/S1793292006000112

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have calculated the electric field enhancement factor for a metallic cylinder with a hemispherical end-cap in a plane capacitor geometry paying particular attention to the dependence of the field enhancement factor on the anode distance. In addition, we have investigated the angular dependence of the local field at the end-cap. The numerical results, which cover a range of different ratios of cylinder lengths and anode distances, can be fitted with simple functional expressions which provide a useful scaling for calculations of field emission currents from closed cap carbon nanotubes or nanowires.

引用

页码：87 / 93

页数：7

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