Dear MEMS colleagues: I plan to fabricate Al surface-micromachining mirror device using thick photoresist(AZ positive, about 6 microns) as sacrificial layer. I plan to use plasma etching to realize the final releasing of the structure. I wonder whether it's difficult to etch off the photoresist sacrificial layer under the mirror structure( about dimension of 100 microns in length and 100 microns in width). Need I design some release holes on the mirror surface to ensure releasing? Any instructions are highly appreciated. Thank you very much. Best regards. Xiong __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/