title: Marangoni Bursting: Evaporation-Induced Emulsification of Binary Mixtures on a Liquid Layer.
abstract: Adjusting the wetting properties of water through the addition of a miscible liquid is commonly used in a wide variety of industrial processes involving interfaces. We investigate experimentally the evolution of a drop of water and volatile alcohol deposited on a bath of oil: The drop spreads and spontaneously fragments into a myriad of minute droplets whose size strongly depends on the initial concentration of alcohol. Marangoni flows induced by the evaporation of alcohol play a key role in the overall phenomenon. The intricate coupling of hydrodynamics, wetting, and evaporation is well captured by analytical scaling laws. Our scenario is confirmed by experiments involving other combinations of liquids that also lead to this fascinating phenomenon.
authors.affiliation: Laboratoire de Physique et Mécanique des Milieux Hétérogènes (PMMH), CNRS, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75005 Paris, France and Sorbonne Universités, Université Paris Diderot.|Total S.A., Pôle d'Études et de Recherche de Lacq, BP47, 64170 Lacq, France.
authors.forename: L
authors.initials: L
authors.lastname: Keiser
authors.affiliation: Laboratoire de Physique et Mécanique des Milieux Hétérogènes (PMMH), CNRS, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75005 Paris, France and Sorbonne Universités, Université Paris Diderot.
authors.forename: H
authors.initials: H
authors.lastname: Bense
authors.affiliation: Université Libre de Bruxelles, TIPs (Transfers, Interfaces and Processes), CP 165/67, Avenue F. D. Roosevelt 50, B-1050 Brussels, Belgium.
authors.forename: P
authors.initials: P
authors.lastname: Colinet
authors.affiliation: Laboratoire de Physique et Mécanique des Milieux Hétérogènes (PMMH), CNRS, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75005 Paris, France and Sorbonne Universités, Université Paris Diderot.
authors.forename: J
authors.initials: J
authors.lastname: Bico
authors.affiliation: Laboratoire de Physique et Mécanique des Milieux Hétérogènes (PMMH), CNRS, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75005 Paris, France and Sorbonne Universités, Université Paris Diderot.
authors.forename: E
authors.initials: E
authors.lastname: Reyssat