for what its worth here is the 20 to 1 state diagram. As one would expect the delamination threshold is pushed upwards. and it seems the localization threshold is pushed up as well... ?

Project YAK

This is a summary of my data for 10:1 pdms. It is a bit messy this way so i like to plot it as:



Which does better at capturing the essential behavior. Delaminations appear in thicker films, and as the film thickness increases eventually appear below the critical strain for buckling (i.e. in thick films you see only delaminations and no wrinkling). More notable is the 'localization'. This thing (illustrated below) appears in the thinnest films, and the strain at which they appear grows with film thickness. The physics behind these structures remains undetermined. Obviously it has to do with moving into a 'thin film' limit, but if they represent local plastic failure or a purely geometric effect remains to be answered.

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