Thursday, June 26, 2008

US Patent 7391144 - Field emission particles with embedded carbon nanomaterials

A variety of carbon based nanomaterials such as carbon nanotubes and nanocrystalline diamond have been experimented with over the past few years as field emission material for applications such as flat-panel displays. In order to further enhance the efficiency this patent from Samsung teaches using particles in which the CNTs may be partially embedded to maximize the exposure of the CNT tips during emission. Claim 1 reads:

1. A carbon-based composite particle for an electron emission source, comprising:

a particle comprising a material selected from the group consisting of metals, oxides, ceramic materials, and combinations thereof; and

a carbon-based material which is partially embedded within the particle and which partially protrudes from the surface of the particle.