Uniaxial deformation of 2D polydisperse froths

We have studied experimentally the uniaxial deformation of polydisperse 2D monolayer liquid foams. The main topics addressed are: (i) the frequency of T1 events; (ii) the trajectories of individual bubbles; (iii) the variatio n of topological disorder; (iv) the change in foam energy (length of films) and in the orientation of the films. We compare the results for polydisper se froths with those previously reported for a honeycomb froth.