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WANG Zesong (王泽松), ZHANG Zaodi (张早娣), HE Jun (何俊), LEE Jae Choon (李载春), LIU Chuansheng Liu (刘传胜), WU Xianying (吴先映), FU Dejun (付德君). A Computerized System for the Measurement of Nanomaterial Field Emission and Ionization[J]. Plasma Science and Technology, 2012, 14(9): 819-823. DOI: 10.1088/1009-0630/14/9/09
Citation: WANG Zesong (王泽松), ZHANG Zaodi (张早娣), HE Jun (何俊), LEE Jae Choon (李载春), LIU Chuansheng Liu (刘传胜), WU Xianying (吴先映), FU Dejun (付德君). A Computerized System for the Measurement of Nanomaterial Field Emission and Ionization[J]. Plasma Science and Technology, 2012, 14(9): 819-823. DOI: 10.1088/1009-0630/14/9/09

A Computerized System for the Measurement of Nanomaterial Field Emission and Ionization

  • We have developed a computerized system for measuring field electron emission (FE) and field ionization (FI), which has a three-electrode configuration with emitters biased up to 25 kV, and is programmed by the Labview software. The current-voltage curves of nano-tip tungsten and carbon nanotube (CNT) arrays were measured. The electron emission of CNTs proceeded with a turn-on field of 1.24 and a threshold field of 1.85 . Compared to the field emission, field ionization turned on at 3.5 . Raman spectroscopy and SEM measurements showed degradation of the CNTs after FE/FI testing. The measurement of a W-tip revealed strong electron emission and instability behavior at a field strength higher than 7.0 V/μm.
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