May I ask why do you have to use PR as a mask? On 10/1/07, Nitin Shuklawrote: > Hi, > I would appreciate if anyone could suggest me a photoresist that would not be etched by TMAH or KOH. > -- Xiaoguang "Leo" Liu Birck Nanotechnology Center, Purdue University, 1205 W.State Street, West Lafayette, IN, 47906 USA liu79@purdue.edu