Patent ID: 8642126
Filing Date: 2014-02-04
Classification: B82Y,H01J

Abstract:
1. A carbon nanotube device comprising: a substrate; an insulating layer laid on said substrate, having a space over said substrate; a coating layer which sandwiches said insulating layer with said substrate and has a tiny opening leading to said space; a catalyst substance laid on said substrate in said space; and a carbon nanotube aggregate supported by said catalyst substance in said space, and wherein said carbon nanotube aggregate is extending from said catalyst substance and said substrate toward said tiny opening in said space, said carbon nanotube aggregate is a spine comprised of a plurality of carbon nanotubes entwined with one another, nominal thickness of said catalyst in said catalyst substance successively decreases according to distance from said tiny opening, nominal thickness of said catalyst in a center of said catalyst substance facing said tiny opening is the thickest, number density of said plurality of carbon nanotubes in said carbon nanotube aggregate successively decreases according to distance from said center of said catalyst substance, said plurality of carbon nanotubes on said center of said catalyst substance are grown in a vertical direction with respect to said substrate; and a leading end of said spine is sharp and adjacent to said tiny opening.