I wondering if anyone has had experience with bonding PDMS to PDMS. I don't
mean bonding two cured slabs using oxygen plasma. I want to take one slab that
is already cured, and then pour new liquid PDMS on top of it in order to
encapsulate some stuff that I put on the slab.

I tried taking a piece of cured PDMS and pouring new PDMS on top of it without
involving anything to be encapsulated, just so I could see how the adhesion was,
and it turned out to be terrible.

If anyone has any suggestions on getting liquid PDMS to bond to cured PDMS, it
would be greatly appreciated.

thank you,
Joe Grogan