Design of CNT-based electron microbeam cell irradiation system for low-dose radiobiology research
MEDICAL IMAGING 2022: PHYSICS OF MEDICAL IMAGING(2022)
摘要
Radiation research primarily aims to improve radiation therapy and the use of radiation on soft materials. There are many reports available on the effects of high-dose radiation on cells, but the effects of low-dose radiation still require much scientific evidence. Therefore, we intend to study the effects of low-dose irradiation on cell internal structures by cold cathode field emission carbon nanotube (CNT)-based cell irradiator. Hence, we designed a CNT-based microbeam system to irradiate cells. CNT emitter was fabricated by synthesizing CNTs on a point-shaped substrate. The growth of CNTs was confirmed by a scanning electron microscope (SEM). The aging process was carried out to improve the performance of the CNT emitter and the I-V characteristic was measured. We also conducted the simulation study to confirm the electric field change and the electron beam trajectory.
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关键词
CNT, Point emitter, Cell irradiation, Low-dose radiation
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