Hi All, I wanted to do photolithography process to pattern on teflon and mica sheets. Does any one has any experience on this. I would like to use positive resist, so can any one suggest me what resist and developer I need to use. Does Shipley 1818 will work for teflon and Mica ? Let me know. Thanks Regards, Madhav Rao Graduate student , University of Alabama, Tuscaloosa.