Bubbles in sheared two-dimensional foams

Details Bubbles in sheared two-dimensional foams Bubbles in sheared two-dimensional foams

2005-02-18

arxiv.org/abs/cond-mat/0502447v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

Oscillatory shear on two-dimensional monodisperse liquid foams was performed. We show that the effect of the oscillatory shear is to cause the migration of bubbles which size is greater than that of a typical bubble of the foam. These so-called flaws move towards the periphery of the foam in a non random motion, thus realizing size segregation in a system which is by construction gravity insensitive. We also show that elongated cavities in the foam could be relaxed towards a more isotropic form with oscillatory shear, and we discuss the pertinent parameters of this relaxation.

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