Patent ID: 7867402
Filing Date: 2011-01-11
Classification: B82Y,G03F,H01L,Y10S

Abstract:
1. A method of forming a nanowire structure, comprising: realizing, on a substrate, a sacrificial layer; realizing, on said sacrificial layer, a sequence of mask spacers obtained by a multispacer patterning technique, said mask spacers including first mask spacers of a first material alternating with second mask spacers of a second material that is different than the first material; obtaining exposed portions of the sacrificial layer by etching and removing the first mask spacers of the first material; selectively etching said sacrificial layer with selective removal of the exposed portions of said sacrificial layer; etching and removing the second mask spacers of the second material, thereby obtaining a multispacer structure; and forming a plurality of nanowires by using the multispacer structure as a mold.