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Carbon Nanotube Electron Emitter for X-ray Imaging

机译:用于X射线成像的碳纳米管电子发射器

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The carbon nanotube field emitter array was grown on silicon substrate through a resist-assisted patterning (RAP) process. The shape of the carbon nanotube array is elliptical with 2.0 × 0.5 mm2 for an isotropic focal spot size at anode target. The field emission properties with triode electrodes show a gate turn-on field of 3 V/µm at an anode emission current of 0.1 mA. The author demonstrated the X-ray source with triode electrode structure utilizing the carbon nanotube emitter, and the transmitted X-ray image was of high resolution.
机译:通过抗蚀剂辅助图案化(RAP)工艺在硅衬底上生长碳纳米管场致发射器阵列。碳纳米管阵列的形状为椭圆形,阳极靶上各向同性的焦点尺寸为2.0×0.5 mm 2 。三极管电极的场发射特性在阳极发射电流为0.1 mA时显示3 V / µm的栅极导通场。作者展示了利用碳纳米管发射器的具有三极管电极结构的X射线源,并且透射的X射线图像具有高分辨率。

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