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A CNT field emitter is suitable to keep the nano-sized focal spot of electron beam for the high-quality images by an x-ray source in nano inspection systems. The micro-sized CNT emitter of an around 10 µm in diameter was formed by the optimized CNT paste through the simple ball-milling process, showing a high current density of 124 A/cm2 at an anode voltage of 4.95 kV. We designed the focal spot of...
We have fabricated a smart triode X-ray tube based on carbon nanotube (CNT) emitters with a high tube current for the stationary breast tomosynthesis examination system. The X-ray tube was designed to have a focal spot of around 0.3 mm. The active-current driving method was applied to our X-ray device to enhance stability and uniformity of the CNT emitters. We have obtained successful X-ray images...
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