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Symmetrization of Thin Free-Standing Liquid Films via Capillary-Driven Flow

Abstract : We present experiments to study the relaxation of a nano-scale cylindrical perturbation at one of the two interfaces of a thin viscous free-standing polymeric film. Driven by capillarity, the film flows and evolves towards equilibrium by first symmetrizing the perturbation between the two interfaces, and eventually broadening the perturbation. A full-Stokes hydrodynamic model is presented which accounts for both the vertical and lateral flows, and which highlights the symmetry in the system. The symmetrization time is found to depend on the membrane thickness, surface tension, and viscosity.
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https://hal.archives-ouvertes.fr/hal-02415522
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Submitted on : Tuesday, December 17, 2019 - 10:19:09 AM
Last modification on : Friday, May 8, 2020 - 7:55:56 PM
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  • HAL Id : hal-02415522, version 1
  • ARXIV : 1912.07930

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Vincent Bertin, John Niven, Howard A. Stone, Thomas Salez, Elie Raphael, et al.. Symmetrization of Thin Free-Standing Liquid Films via Capillary-Driven Flow. Physical Review Letters, American Physical Society, 2020, 124, pp.184502. ⟨hal-02415522⟩

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