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Opening and retraction of particulate soap films

Abstract : We study for the first time the bursting dynamics of thin liquid films laden with hy-drophobic micronic particles either with free or constrained edges. We highlight that the particles can arrange in bilayer or monolayer configurations and explore a range of particles coverage from zero to random close packing. When the particles bridge the two interfaces (monolayer configuration) of free-edge films, the hole opens intermittently. For the other cases, we observe constant retraction velocities, modeled by balancing liquid and particles inertia against surface tension as in Taylor-Culick theory. But, this approach is only valid up to a critical value of particles coverage due to the interplay between the interfaces and the friction between particles.
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Submitted on : Monday, September 28, 2015 - 10:55:25 AM
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Yousra Timounay, Elise Lorenceau, Florence Rouyer. Opening and retraction of particulate soap films. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2015, ⟨10.1209/0295-5075/111/26001⟩. ⟨hal-01201687⟩



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