I had a whole directory full or epapers. I'll try to find it and email some to you. Cheers Shay -----Original Message----- From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On Behalf Of Andrea Mazzolari Sent: Sunday, April 20, 2008 3:42 PM To: shay kaplan Cc: mems-talk@memsnet.org Subject: Re: [mems-talk] Silicon fracture strength Hello Shay, for my application at least one sufaces must be polished, the other one can be etched. I can realize such crystals with pure chemical wet etching methods, so crystal quality in the edge will be perfect. Do you have any reference for the cited values ? Many thanks, Andrea