HI,

     If you dont have O2 Plasma or anything similar RIE equipment then best
is to keep that sample under water for few hours or days. This helped me
to a certain extent but not much.

Regarding SU8 i tried that too but could not get good results. I think
you will need O2 plasma exposure for 30-60sec to get SU8 on PDMS.

All the best.

Yusuf

On Wed, Sep 24, 2008 at 3:10 PM, DEBASHIS MAJI wrote:

> Hi all,
>
>      I am trying to convert the hydrophobic nature of PDMS layer into
> hydrophilic. I have referred to some texts, where they have mentioned about
> the PDMS surface treatment with Oxygen plasma. But currently there is no
> provision here for treating with oxygen plasma. Can anybody please suggest
> me an alternative method for making the PDMS surface hydrophilic?
>
>      Also can anybody suggest me how to put a layer of SU8 over the PDMS
> layer? I observed that SU8 is not staying over the PDMS surface due to its
> hydrophobic nature.

--
Mohd.Yusuf.S.Mulla
Student-FH Jena, Germany.
Currently at :- Leuven, Belgium