Note that this occurs here with a positive hydrostatic stress in the film that contrasts the previous observations where the hydrostatic stress was negative in the punch pull-out mode. , , and ; (ii) , , , and correspond to the films synthesized with (i) PAA and (ii) PVA as sub-components in the hydrophilic inclusions (see text). These studies were conducted with the films immersed in 0.0M (distilled water) and 0.1M, 0.3M and 0.6M salt concentrations. The distilled water and 0.1 M data were obtained after 24hrs of immersion, whereas the data for 0.3M and 0.6M were obtained after seven days of immersion (B) Amplitude of the instability in H-PDMS films increases with its thickness. These set of data correspond to immersion in distilled water. (C) Evolution of amplitude for a 600 mm thick film at different salt concentrations.