Hi All, I am new with MEMs and would like to find out the themal coefficient expansion between silicon, silicon oxide and silicon nitride. Is there a concern for reliability if these 3 materials (one sandwiched on top of another) are heated up to 150 degree celsius? Kindly advise Thanks, Ling __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/