Field-induced evaporation of carbon nanotubes

被引：20

作者：

Umnov, AG ^{[1
]}

Mordkovich, VZ ^{[1
]}

机构：

[1] Int Ctr Mat Res, Takatsu Ku, Kawasaki, Kanagawa 2130012, Japan

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2001年 / 73卷 / 03期

关键词：

D O I：

10.1007/s003390100906

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report here an experimental observation of field emission from arrays of multiwall carbon nanotubes. Current densities in the range 10-30 mA/cm(2) with excellent long-term stability were recorded. A detailed study of the destruction of nanotubes at extreme operation conditions is performed. We established that field evaporation of nanotubes accompanies field emission from a cold cathode at electric fields higher than 2 V/Angstrom. Electron microscopy of the evaporation products reveals irregularly shaped carbon nanoparticles with a hollow core. The diameter of the particles is similar to 20 nm. A mechanism of the process is proposed and discussed.

引用

页码：301 / 304

页数：4

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