Hi，Guocheng,

I tried this before by using trichloro- (1H,1H,2H,2H-perfluorooctyl)silane
(Sigma-Aldrich, St. Louis, MO), and most importantly, it's work. But I am
not sure about your features. It may be difficult when your pattern with
high depth/width.

Please let me know if you have success.

good luck.


2010/10/12 Shao Guocheng 

> Hi Kevin,
>
>     thx for the input. I actually read this tip before. But it seems like
> they
> only offered a way to make a mold master same as their SU-8 original using
> epoxy, and their PDMS replica will always be negative patterns. I actually
> want
> to make PDMS replicas same as my SU-8 originals. I do see a chips & tips
> article
> talking about PDMS molding using PDMS mold:
>
> http://www.rsc.org/Publishing/Journals/lc/Chips_and_Tips/moldingPDMS.asp
>
> But the result I got was not encouraging :(
>
> Guocheng

--
Liang Zhao
College of Engineering, Peking University