Hi Yitian,

Why don't you spin a thin layer of PDMS on top of the heating element?  Then
you can seal the PDMS channel to the thin PDMS layer by using an oxygen
plasma, or you could also seal the two layers by using different ratios of
cross-linker.  If you decide to use different ratios, I would recommend
using a ratio of 5:1 base:cross-linker for the channel layer and a ratio of
20:1 for the thin layer.  Cure the two layers separately until the thin
layer is just slightly tacky, then seal them together and bake at 65 C for
at least half an hour.

Josh


On Wed, Jul 30, 2008 at 2:44 PM, tutu  wrote:

> Dear Everyone,
>   I try to bond the PDMS channel and glass with heater.I wanna one thin
> protective layer to protect the heater from the channel solution.
> Is there some kind of material can spin on the heater and have good bonding
> properties with PDMS??
> Please help me /?
> Thanks
> Yitian
>

Joshua Tice

Graduate Research Assistant
Kenis Research Group
Dept. of Chemical & Biomolecular Engineering
University of Illinois, Urbana-Champaign
Roger Adams Laboratory, Room 216A, Box C3
600 South Mathews Avenue
Urbana, IL 61801
217-333-2442 (office)
217-244-8068 (fax)