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Compact field emission (FE) scanning electron microscope (SEM) equipped with a multiwall carbon nanotube (MWCNT) emitter has been experimentally manufactured. An electrostatic extraction and focusing lens designated to the CNT field emitter was designed. Electron emission from a MWCNT was stable under a vacuum of 10−7 Pa even without a stabilization resistance. The maximum acceleration voltage was...
We demonstrated a novel point-typed carbon nanotube field emitters using a triangular-shaped carbon nanotube films. We also investigated the field emission properties of the field emitters according to the tip angles. The wider field emitters exhibited higher emission current, and the field emitters with a tip angle of 120° showed extremely high emission current density over 104 A/cm2 (> 10 mA)...
Field emission microscopy (FEM) and in-situ transmission microscopy (TEM) studies on electron emission from a piece of exfoliated multilayered graphene revealed that the structure of graphene edges changed from open before field emission (FE) measurement to closed after FE under high emission current over a few tens μA (107–108 A/cm2 in current density). Dynamic behaviour of metal (Al and Au) deposited...
The electron optical system of a micro-focused X-ray source with carbon nanotube field emitter is modified to improve the resolution of X-ray transmission image and penetrating power
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