Rajib,
I suggest you try a plasma treatment. With an inert gas plasma such as
Argon, you are using what I think of as the worlds smallest shot blaster. The
vibrating Argon ion will microscopically abrade the surface increasing the
surface area and increasing the adhesion. The abrasion is non visible think of
a shiny surface still being shiny but there are now hills and valleys in your
glass surface. Easy way to quantify this is to put a drop of water on your
glass surface and observe the hydrophobic effect. The water will roll off the
surface easily. Then after an Argon plasma no visible change to the surface but
a drop of water will spread out and cling to the surface because of the
increased surface area. Lots more stiction. Somebody in your photo resist or
microcircuit faculty will have a plasma cleaner. Bill Moffat
-----Original Message-----
From: Rajib Ahmed [mailto:rajib@ece.rochester.edu]
Sent: Thursday, April 10, 2003 7:43 AM
To: General MEMS discussion
Subject: [mems-talk] adhesion problems
Hello everyone,
I am trying to coat some glass substrates with silver but the problem is
poor adhesion. My coating thickness is approximately 200 nm. Is there
any way I can pre-treat my glass surface with an adhesion promoter to
improve the quality so that silver can stick better? Any suggestions
would be greatly appreciated. Thanks a bunch,
*******************************************************************************
Rajib Ahmed
347 Hopeman Engineering Building
Department of Electrical and Computer Engineering
University of Rochester
Rochester, NY 14627-0167
Email:rajib@ece.rochester.edu
Phone#:(585)275-8093
Fax#:(585)273-4919
*******************************************************************************
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