Patent ID: 8692230

Claim:
A method comprising: forming a source electrode and a drain electrode on a nanomaterial thin film, thereby defining a channel area between the source electrode and the drain electrode, wherein the nanomaterial thin film is disposed on a substrate; removing at least a portion of the nanomaterial thin film located outside of the channel area from the substrate; disposing resist over the source electrode, the drain electrode, and the nanomaterial thin film in the channel area; removing a portion of the resist between the source electrode and the drain electrode, thereby forming an opening in the resist between the source electrode and the drain electrode; developing the resist; applying an electrically conductive material over the developed resist, thereby forming a gate electrode in the opening, the gate electrode comprising a head region and a foot region, the foot region in contact with a first portion of the nanomaterial thin film in the channel area and having a length parallel to a surface of the nanomaterial thin film shorter than a maximum length of the head region parallel to the surface of the nanomaterial thin film; removing the developed resist; forming a dielectric layer on an outer surface of the gate electrode; and depositing a metal layer over the source electrode, the drain electrode, the head region of the gate electrode, and a second portion of the nanomaterial thin film in the channel area, wherein the head region of the gate electrode inhibits deposition of the metal layer over a third portion of the nanomaterial thin film proximate the foot region of the gate electrode.