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Simulation and fabrication of carbon nanotubes field emission pressure sensors

  • Kaiyou Qian*
  • , Ting Chen
  • , Bingyong Yan
  • , Yangkui Lin
  • , Dong Xu
  • , Zhuo Sun
  • , Bingchu Cai
  • *Corresponding author for this work
  • Ministry of Education of the People's Republic of China
  • East China Normal University

Research output: Contribution to journalArticlepeer-review

Abstract

A novel field emission pressure sensor has been achieved utilizing carbon nanotubes (CNTs) as the electron source. The sensor consists of the anode sensing film fabricated by wet etching process and multi-wall carbon nanotubes (MWNTs) cathode in the micro-vacuum chamber. MWNTs on the silicon substrate were grown by thermal CVD. The prototype pressure sensor has a measured sensitivity of about 0.17-0.77 nA/Pa (101-550 KPa). The work shows the potential use of CNTs-based field-emitter in microsensors, such as accelerometers and tactile sensors.

Original languageEnglish
Pages (from-to)4198-4201
Number of pages4
JournalApplied Surface Science
Volume252
Issue number12
DOIs
StatePublished - 15 Apr 2006

Keywords

  • Carbon nanotubes
  • Field emission
  • Pressure sensors

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