title: Spreading of an Oil-in-Water Emulsion on a Glass Plate: Phase Inversion and Pattern Formation.
abstract: Rigid blade coating of glass plates by oil-in-water emulsions stabilized by surfactants is studied. Complete surface coverage is obtained only for speeds exceeding a threshold velocity dependent on the height between the blade end and the surface. Below this threshold, the emulsion can be inverted in the vicinity of the blade. The inversion dynamics of the oil-in-water emulsion and the deposition patterns induced by this phase inversion are studied using a microscope mounted set up. We show that these dynamics are universal for different volume fractions and deposition velocities. This inversion as well as the destabilization of the emulsion film deposited at high speeds gives rise to different patterns on the glass surface. These patterns are discussed in terms of the emulsion characteristics as well as the deposition velocity.
authors.affiliation: †Laboratoire Ondes et Matière d'Aquitaine, UMR 5798 CNRS-U. Bx, Université de Bordeaux, 351 cours de la Libération 33405, Talence, France.
authors.forename: A
authors.initials: A
authors.lastname: Deblais
authors.affiliation: †Laboratoire Ondes et Matière d'Aquitaine, UMR 5798 CNRS-U. Bx, Université de Bordeaux, 351 cours de la Libération 33405, Talence, France.
authors.forename: R
authors.initials: R
authors.lastname: Harich
authors.affiliation: ‡van der Waals-Zeeman Institute, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands.
authors.forename: D
authors.initials: D
authors.lastname: Bonn
authors.affiliation: §Centre de Recherche Paul Pascal, CNRS UPR 8641, Université de Bordeaux, 115 av. Schweitzer, F-33600 Pessac, France.
authors.forename: A
authors.initials: A
authors.lastname: Colin
authors.affiliation: †Laboratoire Ondes et Matière d'Aquitaine, UMR 5798 CNRS-U. Bx, Université de Bordeaux, 351 cours de la Libération 33405, Talence, France.
authors.forename: H
authors.initials: H
authors.lastname: Kellay