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Bubble Rearrangement Duration in Foams near the Jamming Point

Abstract : We investigate the dynamics of bubble rearrangements in coarsening foams, using a time-resolved multiple light scattering technique. We measure the average duration of such events as a function of the foam confinement pressure. Rearrangements slow down as the pressure is decreased toward the jamming point. Our results are explained by a scaling law based on the balance of pressure and Darcy flow, highlighting an analogy between wet foams with mobile interfaces and suspensions of hard grains.
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Marie Le Merrer, Sylvie Cohen-Addad, Reinhard Hoehler. Bubble Rearrangement Duration in Foams near the Jamming Point. Physical Review Letters, American Physical Society, 2012, 108 (18), pp.188301. ⟨10.1103/PhysRevLett.108.188301⟩. ⟨hal-01239414⟩



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