Thursday, May 17, 2012

US Patent 8178402 - Self-assembly of CNT transistors

This patent from Intel teaches how to align and immobilize carbon nanotubes as the channels of field effect transistors using molecular functionalization of the ends of the nanotubes. Claim 1 reads:

1. A method comprising:

selectively severing a portion of a carbon nanotube;

functionalizing an exposed portion of the carbon nanotube, wherein opposed ends of said carbon nanotubes are functionalized differently; and

placing the carbon nanotube on a transistor substrate, wherein a source region of the transistor substrate attracts one end of said carbon nanotube and a drain region attracts the opposite end of said carbon nanotube.