Simulation and fabrication of carbon nanotubes field emission pressure sensors |
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| Authors: | Kaiyou Qian Ting Chen Yangkui Lin Zhuo Sun |
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| Institution: | a Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, Research Institute of Micro/nanometer Science & Technology, Shanghai Jiao Tong University, Shanghai 200030, PR China
b Nanotech Center, East China Normal University, Shanghai 200062, PR China |
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| 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. |
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| Keywords: | Carbon nanotubes Field emission Pressure sensors |
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