Patent ID: 8558219

Claim:
A method for forming a nanowire field effect transistor (FET) device, the method comprising: forming a nanowire over a substrate; forming a liner material around a portion of the nanowire; forming a capping layer on the liner material; forming a first spacer adjacent to sidewalls of the capping layer and around portions of the nanowire; forming a hardmask layer on the capping layer and the first spacer; removing an exposed portion of the nanowire to form a first cavity partially defined by a gate material; epitaxially growing a semiconductor material on an exposed cross section of the nanowire in the first cavity; removing the hardmask layer and the capping layer; forming a second capping layer around the semiconductor material epitaxially grown in the first cavity to define a channel region; and forming a source region and a drain region contacting the channel region.