Patent ID: 7736979

Claim:
A method of forming a nanotube field effect transistor (FET), comprising: providing a multi-layer stack having materials in an order of: a first conductive layer, a first insulating layer, a second conductive layer, and a second insulating layer; forming a first aperture in at least a top portion of the second insulating layer; forming a second aperture in the second conductive layer and the first insulating layer to expose a region of the first conductive layer, the second aperture being centrally aligned with respect to the first aperture and having a diameter smaller than a diameter of the first aperture; generating an electric field proximate to the first aperture, the electric field configured to direct a plurality of nanotubes towards the exposed region of the first conductive layer; depositing a first nanotube on the exposed region of the first conductive layer by electrophoresis, with a first end of the first nanotube contacting the exposed region of the first conductive layer proximate a center of the exposed region of the first conductive layer; wherein the first aperture and the second aperture are sized to allow the plurality of nanotubes to contact the exposed region of the first conductive layer; and wherein after the first nanotube is deposited, the deposited first nanotube re-configures the electric field to thereby prevent other nanotubes from the plurality of nanotubes from being deposited on the exposed region of the first conductive layer.