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Field Emission Cathodes Fabricated from Bulk Carbon Nanotube Fibers and Films
Conference proceeding

Field Emission Cathodes Fabricated from Bulk Carbon Nanotube Fibers and Films

Steven B Fairchild, Paul T Murray, Salvador Portillo, Genevieve Dion and IEEE
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC), pp 19-20
19 Oct 2020
DOI: https://doi.org/10.1109/IVEC45766.2020.9520634

Abstract

carbon nanotube Carbon nanotubes cold cathode Current measurement field emission Films Iron Optical fiber devices Power supplies Three-dimensional displays
Carbon Nanotube (CNT) fibers and films have demonstrated excellent field emission (FE) properties and thus hold significant potential for use as electron sources for vacuum electronic devices VEDs). FE cathodes made from 100μm diameter CNT fibers were fabricated on an industrial grade 3D knitting machine. A 1" diameter cathode was tested using 30kV, 30A power supply with a 300ns pulse width. An applied field strength of 3V/μm produced a measured current level of approximately 15A. A CNT film cathode was fabricated from a 20mm wide film arranged in a corrugated geometry. This cathode was tested in a low impedance linear transformer driver (LTD) system operating at 30kV with a 200ns pulse width. The measured current level was approximately 2kA for an applied field strength of 6V/μm.

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2 citations in Web of Science
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Domestic collaboration
Web of Science research areas
Engineering, Electrical & Electronic
Physics, Applied
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