Journal
IEEE ELECTRON DEVICE LETTERS
Volume 36, Issue 11, Pages 1209-1211Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2015.2478157
Keywords
Carbon nanotube; field emission; x-ray source; active-current control; fast and stable operation
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Funding
- Ministry of Science, ICT and Future Planning, Korea through R&D program of NST
- ETRI RD program [P0037391, B551179-12-04-00, 15ZE1140]
- National Research Council of Science & Technology (NST), Republic of Korea [15IE1200, 15ZE1100] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The advanced active-current control (ACC) with a push-up voltage source is proposed for the fast operation of carbon nanotube (CNT) field-emission x-ray tubes while preserving the advantages of improved stability and reliability. The push-up voltage source, composed of a voltage supply and a resistor, was found to reduce markedly the response time of CNT x-ray tubes down to several tens nanoseconds. The very fast operation of CNT x-ray tube with the advanced ACC could provide an improved x-ray imaging technology, including high-speed scanning and blur-less imaging.
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