Patent ID: 7435688

Claim:
A method of forming a patterned structure, comprising: forming a first layer of a first material on a substrate; forming a second layer of a second material consisting of one of undoped silicon and conductively-doped silicon over the first layer; forming a layer of imagable material on the second layer; patterning the imagable material; transferring a pattern from the patterned imagable material to the underlying second material and first material to form a patterned structure comprising the second material and first material; the patterned structure having a pair of opposing sidewalls extending upwardly from the substrate; a pair of opposing corners being defined where the sidewalls join the substrate, a distance between the opposing corners being less than the distance would be were the second material absent during the patterning of the imagable material; and after transferring the pattern to the underlying second material and first material, removing the imagable material and the second material from the patterned structure.