Richard I will try to reach you directly for a series of discussions on HMDS. Simple answer 100% HMDS and vacuum vapor prime. Bill Moffat, CEO Yield Engineering Systems, Inc. 203-A Lawrence Drive, Livermore, CA 94551-5152 (925) 373-8353 bmoffat@yieldengineering.com www.yieldengineering.com -----Original Message----- From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On Behalf Of Richard B. Keithley Sent: Thursday, August 30, 2007 12:58 PM To: mems-talk@memsnet.org Subject: [mems-talk] HMDS For Adhesion Hey Y'all! I want to use HDMS for adhesion of a DQ resist to my silicon substrate. I have looked in literature different groups use varying concentrations of HDMS (ex: 10%, 20%, 100%). I was wondering if anyone had any personal experience they could share to help me out.