Extension of a suspended soap film: a two-step process

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• Isabelle Cantat, IPR, Universite de Rennes 1
• Friday 28 February 2014, 16:00-17:00
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

If you have a question about this talk, please contact Dr C. P. Caulfield.

Liquid foams are widely used in industry for their high effective viscosity, whose local origin is still unclear. We present new results on the extension of a suspended soap film, in a configuration mimicking the elementary deformation occurring during foam shearing. We evidence a surprising two-step evolution: the film first extends homogeneously, then its extension stops and a new thicker film is extracted from the meniscus. We predict this complex behavior using a model based on Frankel’s theory, and on interface rigidification induced by confinement.

This talk is part of the Fluid Mechanics (DAMTP) series.

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