Abstract
Carbon nanofibers possess the following properties favorable for field emitters: (1) high aspect ratio, (2) small radius of curvature at their tips, (3) high chemical stability and (4) excellent mechanical strength. Field emission microscopy (FEM) study was carried out using various types of nanofibers including multiwall nanotubes (MWNTs), single-wall nanotubes (SWNTs) and vapor grown carbon fibers (VGCFs). Field emission patterns and current versus voltage characteristics are discussed. As an application of nanotube field emitters, field emission displays (FED) equipped with nanotube cathodes are now attracting considerable attention. Fabrication and performance of nanotube-based FED elements are briefly reviewed.
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