You'll have adhesion problem with PTFE anyways.  Have you tried laminating
dry sheet photoresists? Unless you are trying to do very fine structures,
that might work.

What are you trying to make?  I.e., are you trying to pattern PTFE, or do a
liftoff from a PTFE substrate? You may reply directly to:
ashend@bellsouth.net

Good luck.

Alex

-----Original Message-----
From: mems-talk-admin@memsnet.org [mailto:mems-talk-admin@memsnet.org]On
Behalf Of Yiyi Zhang
Sent: Saturday, December 29, 2001 1:59 AM
To: mems-talk@memsnet.org
Subject: [mems-talk] surface tension


Hi all,
Does anyone know how to significantly decrease surface
tension of photoresists, positive or negative, so as
to spin-coat onto wafers with very low critical
surface tension, such as PTFE? No surface
pre-treatment is allowed because we want to keep the
original low surface energy. Any suggestion is
appreciated.

Thanks in advance.

Yiyi Zhang
Department of Microgravity
Institute of Mechanics, Chinese Academy of Sciences
Beijing 100080
Send your FREE holiday greetings online!
http://greetings.yahoo.com
_______________________________________________
mems-talk@memsnet.org mailing list: to unsubscribe or change your list
options, visit http://mail.mems-exchange.org/mailman/listinfo/mems-talk
Hosted by the MEMS Exchange, providers of MEMS processing services.
Visit us at http://www.mems-exchange.org/