Patent ID: 7541267

Claim:
A method, comprising: forming a first rectangular mesa from a layer of semiconducting material, the first rectangular mesa having four side surfaces; forming a first dielectric layer around the first mesa and in direct physical contact with a substantial entirety of each of the four side surfaces of the first mesa; forming a first rectangular mask over a first portion of the first mesa leaving an exposed second portion of the first mesa; and etching the exposed second portion of the first mesa to produce a reversed T-shaped fin from the first mesa; removing the first mask subsequent to etching the exposed second portion of the first mesa; removing the first dielectric layer from around the first mesa; forming a second dielectric layer over surfaces of the reversed T-shaped fin; forming a second rectangular mesa over the second dielectric layer and the reversed T-shaped fin; forming a second rectangular mask over a first portion of the second mesa leaving an exposed second portion of the second mesa; and etching the exposed second portion of the second mesa to produce a gate that conforms to a shape of the reversed T-shaped fin.