Hi Eowin,
              It depends on your application. I have very good experience
with it. Its crystal clear (colorless), refractive index is 1.41.  It dosent
swell with developer (Siloxane from dowcorning ). Only problem is the
surface of structures after development is little convex. And another thing
is its sloped walls. Please refer paper *

A Photopatternable Silicone for Biological Applications,

Salil P. Desai,†,‡ Brian M. Taff,†,‡,§ and Joel Voldman ,

Massachusetts Institute of Technology.

If you need more info, feel free to ask.

Regards,

Yusuf

On Fri, Aug 8, 2008 at 9:43 AM, eowin rohan  wrote:

> Hi Yusuf,
>
> I'm afraid I have no suggestions to your problem, but I am very interested
> in photoparternable PDMS from Dow Cornig. Do you have good experience with
> your old 5351? I would like use it instead of SU-8. What about its
> transparency and colour, it is really colourless??. Does it swell with
> developer??
>
> Thank you in advance and good luck with your new pdms.
>
> Eowin

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