Hello all, I need to use SU-8 as a masking layer in R.T. KOH etching of silicon for 3-4 hours. Is this possible or would I have the same adhesion problems associated with 70-90 C KOH etching ? I also need to know how many hours SU-8 can resist 10 wt% HF. Is this also a adhesion issue or will HF really attack SU-8 and if so, with what etch rate? Finally, Does anyone have a number on SU-8 electrical resistivity? Thanks in advance -- Srinivas Parimi Research Assistant Center for Microelectronics Sensors & MEMS (CMSM) 372 ERC University of Cincinnati Cincinnati OH 45221 (513) 556 4795 Fax: (513) 556 7326 sparimi@ececs.uc.edu http://www.mems.uc.edu