Design of a multi-walled carbon nanotube field emitter with micro vacuum gauge
1 Display and Nanosystem Laboratory, College of Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul, 136-713, Republic of Korea
2 Department of Mechanical Engineering, Hanbat National University, Daejeon, 305-719, Republic of Korea
Nanoscale Research Letters 2013, 8:143 doi:10.1186/1556-276X-8-143Published: 28 March 2013
The variation of vacuum level inside a field emission device when electron is emitted from multi-walled carbon nanotubes (MWCNTs) by electric field was measured where MWCNT gauge packaged with a vacuum device was used to measure the degree of a vacuum until the end of the vacuum device life. It was found that the electrical properties of MWCNTs altered with the degree of a vacuum. We fabricated MWCNT gauge which were printed and pasted by the screen printer. In this paper, we report the successful detection of the ionization of gases in vacuum state.