Mikael, The secret to treating surfaces to promote total hydrophobicity is a) Totally dehydrate then treat with the vapor of the right chemical. We manufacture equipment designed to do this. Knowing from experience that the cost of the equipment is usually beyond an academic budget we can offer free tests of the treatment. Contact me directly. Bill Moffat CEO Yield Engineering Systems. 925 373 8353. ________________________________ From: mems-talk-bounces@memsnet.org on behalf of Mikael Evander Sent: Fri 11/14/2008 7:40 AM To: General MEMS discussion Subject: [mems-talk] PEG-coating of sealed glass or silicon channel? Hi. Does anyone know of a good protocol or reference for coating a sealed glass or silicon channel with PEG (or something similar)? I'm trying to reduce the amount of sticking of particles/cells to the surfaces and was told that PEG might do the trick? best regards Mikael Evander Tel: +46-46-222 75 27 Lund University Mobil: +46-702 27 11 58 Dept. of Electrical Measurements Fax: +46-46-222 45 27 Box 118 221 00 Lund Sweden