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Holes and cracks in rigid foam films

Abstract : The classical problem of foam film rupture dynamics has been investigated when surfaces exhibit very high rigidity due to the presence of specific surfactants. Two new features are reported. First a strong deviation to the well-known Taylor-Culick law is observed. Then, crack-like patterns can be visualized in the film; these patterns are shown to appear at a well defined deformation. The key role of surface active material on these features is quantitatively investigated, pointing the importance of surface elasticity to describe these fast dynamical processes, and thus providing an alternative tool to characterize surface elasticity in conditions extremely far from equilibrium. The origin of the cracks and their consequences on film rupturing dynamics are also discussed.
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https://hal.archives-ouvertes.fr/hal-01133820
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Submitted on : Tuesday, March 31, 2015 - 9:10:54 AM
Last modification on : Saturday, September 24, 2022 - 2:30:05 PM
Long-term archiving on: : Tuesday, April 18, 2017 - 5:47:02 AM

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Pauline C. Petit, Marie Le Merrer, Anne-Laure Biance. Holes and cracks in rigid foam films. Journal of Fluid Mechanics, Cambridge University Press (CUP), 2015, 774, ⟨10.1017/jfm.2015.278⟩. ⟨hal-01133820v2⟩

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