>I'd like to get some 3", N(100), resistivity>5 Ohm-cm, 200um thick wafers. >Does anybody know where I can get them? Besides, I want to etch polyimide >film the wafer, does anybody know the etchant for the polyimde wet etching? >Any reply will be appreciated. Thanks in advance, >Best regards, > >Lin > >************************************************** >Lin Wang, Graduate Student >Department of Electrical and Computer Engineering >Beckman Institute, Rm B428C >University of Illinois at Urbana-Champaign >405 North Mathews Avenue >Urbana, IL 61801 > >e-mail: lwang@uibrl.brl.uiuc.edu, linwang1@uiuc.edu >Tel. (217)-333-1088(O), (217)-351-8976(R) >************************************************** > > > Virginia Semiconductor (703-373-2900) is a good source for custom wafers. Transese (508-948-2501) makes a Kapton etchant