Patterning nanometer resist features on planar & topography substrates using the 2-step NERIME FIB top surface imaging process

Abstract

The 2-step negative resist image by dry etching (2-step NERIME) focused ion beam (FIB) top surface imaging (TSI) process has been previously reported as an excellent technique for patterning nanometer scale features in DNQ/novolak based photoresists on silicon substrates. In this paper we demonstrate that the 2-step NERIME process can be used to pattern nanometer scale resist features on different substrate materials and topography substrates.