Patent ID: 7482652
Filing Date: 2009-01-27
Classification: B82Y,G11C,H01L,Y10S

Abstract:
1. A method of forming a carbon nanotube structure comprising: Forming a set of three concentric carbon nanotubes on a substrate, said set including: cutting said outer carbon nanotube and said middle carbon nanotube, wherein said middle carbon nanotube and said outer carbon nanotube have a same length and two vertically coincident pairs of edges after said cutting, and wherein said inner carbon nanotube protrudes out from each of said two vertically coincident pairs of edges; forming a protective dielectric layer over said substrate and said set of three concentric carbon nanotubes; patterning said protective dielectric layer to expose two end portions of said inner carbon nanotube; forming a conductive gate contact structure directly on said outer carbon nanotube; and forming a conductive source side contact structure directly on one side of said inner carbon nanotube and forming a conductive drain side contact structure directly on another side of said inner carbon nanotube, wherein said conductive source side contact structure and said drain side contact structure are formed directly on said two end portions of said inner carbon nanotube.