Carbon Nanotube: New Approach as an Electron Gun

Carbon Nanotube: New Approach as an Electron Gun

Multiwall carbon nanotube field emitter as an electron source for FE-SEM and as CNT Probe for AFM

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Since the discovery of carbon nanotube (CNT) by Iijima in 1991, several research works have been conducted onto their useful properties, synthesis methods and applications in various fields as well. Because of various unique properties, CNTs are considered as promising field-emission electron sources in scanning electron microscope (SEM), field-emission flat panel displays, X-ray sources, and ideal probe for scanning probe microscopy. We have developed MWCNT field emitter as an electron source for a microcolumn-based FE-SEM. The operating tip bias is much lower while the sample current is high...