How about Piranha etch (3:1=H2SO4:H2O2)? Regards, Yilei Zhang -----Original Message----- From: Süleyman Umut EKER [mailto:eker@metu.edu.tr] Sent: Saturday, April 15, 2006 10:11 AM To: General MEMS discussion Subject: [mems-talk] Teflon Remover Hi all, I am suspected, teflon-like material has been deposited on the sample during RIE etch. I have tried to clean the sample with oxygen plasma but I couldn't succeed. Does anybody know a solvent to remove teflon. Thanks in advance. Eker