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Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2010

Fast relaxations in foam

Résumé

Aqueous foams present an anomalous macroscopic viscoelastic response at high frequency, previously shown to arise from collective relaxations in the disordered bubble packing. We demonstrate experimentally how these mesoscopic dynamics are in turn tuned by physico-chemical processes on the scale of the gas-liquid interfaces. Two specific local dissipation processes are identified, and we show how the rigidity of the interfaces selects the dominant one, depending on the choice of the surfactant.
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Dates et versions

hal-00515561 , version 1 (07-09-2010)

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K. Krishan, A. Helal, R. Höhler, S. Cohen-Addad. Fast relaxations in foam. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2010, 82, pp.011405. ⟨10.1103/PhysRevE.82.011405⟩. ⟨hal-00515561⟩
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