Patent ID: 7399573

Claim:
A method of making a patterned material feature on a substrate, said method comprising: (a) providing a material surface on a substrate, (b) providing a layer of negative resist over said surface, said negative resist comprising (i) a polymeric component containing first silsesquioxane moieties functionalized with a first reactive group having a first crosslinking reactivity and a first dissolution rate in aqueous alkaline solutions, and second silsesquioxane moieties functionalized with a second reactive group having a second crosslinking reactivity and a second dissolution rate in aqueous alkaline solutions, said reactivities being different from one another and said dissolution rates being different from one another, (ii) a crosslinking component, and (iii) a radiation-sensitive acid generator, (c) patternwise exposing portions of said resist to imaging radiation, (d) removing resist except for said exposed portions to form spaces defined by remaining exposed portions of said resist layer, and (e) removing or ion implanting portions of said material at said spaces, thereby forming said patterned material feature.