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Ballast resistor under layer can improve reliability and stability of field emission cathode. Utilization of ballast resistor in Spindt cathode has been studied thoroughly. However, due to the significant difference between the Spindt cathode and CNT (carbon nanotube) emitter, studies of ballasted CNT emitter array are rare. Ballasted CNT emitter array has been demonstrated in our early studies. In...
The incorporation of a ballast resistor layer underneath field emitters can improve the reliability and stability of field emission cathodes. However, it has not been successfully demonstrated in carbon-nanotube (CNT)-based field emitters. In this paper, we introduce a fabrication process of a low-density vertically aligned CNT array with a ballast resistor layer. Furthermore, an X-ray tube prototype...
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