Patent ID: 7919338
Filing Date: 2011-04-05
Classification: B82Y,H01J,H01L,Y10S

Abstract:
1. A method of making an integrally gated carbon nanotube field ionization device comprising: forming a first insulator layer on a first side of a substrate; depositing a conductive gate layer on said first insulator layer; forming a cavity in said substrate by etching a second side of said substrate to near said first insulator layer, wherein said second side is opposite said first side and wherein a portion of said first insulator is over said cavity; etching an aperture in said portion of said first insulator layer and said conductive gate layer to form an aperture sidewall; depositing a second insulator layer on said substrate and said first insulator layer and said aperture sidewall and said conductive gate layer; removing said second insulator layer from the top surface; depositing a metallization layer over said second insulator layer; depositing a catalyst layer on said metallization layer; and growing a carbon nanotube from said catalyst layer.