Dear Mukesh

We very often use the Dow Corning Sylgard prepolymer and linker to make a PDMS stamp for transferring thin films on different substrates. To make a PDMS stamp, there are many references you could find out from the literature review. Here i list two of them you could follow

https://www.ncbi.nlm.nih.gov/m/pubmed/16404506/

https://www.nature.com/articles/s41598-018-36521-x

Hope it helps.

Very best

Xuhua

Hi,

I agree with Xuhua Wang . If you want to fab completely in-house with least amount of instruments and cost, you can simply use manually made linear cuts on copper clads/OHP transparency using scalpel blade with whatever geometry you desire and go through soft litho using pdms on them. Feel of the pdms film and you will get the required stamp. With this approach i was able to get structures in the range from sub micron to tens of mm. This technique needs a watch maker's hand and lots of tinkering with the available materials!!!

Regards

Hello

PDMS thin films can be obtained by spin coating of 184 Silicone Elastomer from Dow Corning on a glass support. For 500 rpm during 11 s after annealng at 100°C during 35 min. You will make a PDMS film with 400 µm of thicknesse.

Hope it helps.

Good luck

Mouaad