Pull-off Force Measurement. After placing the domed epoxy disks on the H=PDMS films, they were subjected to a gentle vacuum (30 Hg) for half an hour to remove bubbles from the adhesive junction. Following this treatment, the domed disk was re-melted with a brief (2 sec) exposure to the hot air of a heat gun at 130 C°. After the samples were cooled, pull-off forces were measured.