期刊
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
卷 210, 期 2, 页码 349-355出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssa.201228415
关键词
carbon nanotubes; field emission; ionization vacuum gauge; MgO nanoparticles
资金
- National Natural Science Foundation of China [60971002]
- 973 project of MOST [2013CB933604]
Composite films of carbon nanotubes (CNTs) and MgO nanoparticles are fabricated on metal substrates as field emitters by a simple mechanical rubbing method. The field emission properties of the CNT films could be dramatically improved by mixing an optimum proportion (similar to 7 wt%) of MgO nanoparticles. It lowers the turn-on field to 1.3 V mu m(-1) and the threshold field to 2 V mu m(-1), and also increases the field emission stability and uniformity. Such CNTs-MgO films are applied as cathode in ionization vacuum gauges. The gauges, with the advantages of small size and low power consumption, exhibit good measurement linearity in vacuum pressure range from 8 x 10(-6) to 2 x 10(-2) Pa, and a sensitivity of 0.2 Pa-1. (C) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据