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Your search keyword '"Liu, Jiayu Alexander"' showing total 13 results
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13 results on '"Liu, Jiayu Alexander"'

12. The field emission properties of a new design: multi-pixel carbon nanotube field emitters for imaging application

Author

John T.W. Yeow, Elahe Cheraghi, Yonghai Sun, Siyuan Chen, and Liu Jiayu Alexander

Subjects
Materials science, business.industry, High voltage, 02 engineering and technology, Carbon nanotube, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Cathode, 0104 chemical sciences, Anode, law.invention, Field electron emission, Plasma-enhanced chemical vapor deposition, law, Electric field, Optoelectronics, 0210 nano-technology, business, Common emitter
Abstract

In this study, a patterned cathode, on an n-type doped silicon resistor with a doping concentration of 1014 cm-3 and a cross section area of 1µm2, is designed for multi-pixel X-ray source with one anode. In this regard, individual carbon nanotube (CNT) field emitter arrays (FEAs) is fabricated by plasma enhanced chemical vapor deposition (PECVD) method on the Si cathode. The cathode has a density of 100×100 CNT arrays, and it is tested for x-ray generation at high voltage, the current and radiation dose are measured during the experiment. At the end of this work, we investigate a 3×3 multi-pixel X-ray source and see if the power of each X-ray pixel can be easily controlled and have more potential to achieve high resolution. For this purpose, COMSOL Multiphysics is used to simulate the electric field.

Published
2019

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