Hi, we are been trying to make PDMS mold from sylgard 184. instead of the
curing temperature with the same mixture of ODMS and curing agent, Is it
possible to make PDMS mold in room temperature, just skipping the heating
process after pouring the mixture into the mold. We tried once, there is so
much  of difference when followed heating process. The structures where not
defined properly. Is this due to effect of temperature, but the dowcorning
people claim it should not change. they say the heating process is only for
making the procedure faster, so if the heating procedure is not followed
then it might take ,ore than one day to cure. But in our case we cured ot
for three days but the structure has changed when compared. The change in
structure is the height profile of the photonic crystal. has anyone tried
these things.

Thanks!
RIGHEIRA
IMEC