title: Dynamic Stratification in Drying Films of Colloidal Mixtures.
abstract: In simulations and experiments, we study the drying of films containing mixtures of large and small colloidal particles in water. During drying, the mixture stratifies into a layer of the larger particles at the bottom with a layer of the smaller particles on top. We developed a model to show that a gradient in osmotic pressure, which develops dynamically during drying, is responsible for the segregation mechanism behind stratification.
authors.affiliation: Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.|Theoretische Physik II, Physikalisches Institut, Universität Bayreuth, Universitätsstraße 30, D-95447 Bayreuth, Germany.
authors.forename: Andrea
authors.initials: A
authors.lastname: Fortini
authors.affiliation: Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
authors.forename: Ignacio
authors.initials: I
authors.lastname: Martín-Fabiani
authors.affiliation: Laboratoire de Chimie, Catalyse, Polymères et Procédés, Université Claude Bernard Lyon 1, 69616 Villeurbanne cedex, France.
authors.forename: Jennifer Lesage
authors.initials: JL
authors.lastname: De La Haye
authors.affiliation: Laboratoire de Chimie, Catalyse, Polymères et Procédés, Université Claude Bernard Lyon 1, 69616 Villeurbanne cedex, France.
authors.forename: Pierre-Yves
authors.initials: PY
authors.lastname: Dugas
authors.affiliation: Laboratoire de Chimie, Catalyse, Polymères et Procédés, Université Claude Bernard Lyon 1, 69616 Villeurbanne cedex, France.
authors.forename: Muriel
authors.initials: M
authors.lastname: Lansalot
authors.affiliation: Laboratoire de Chimie, Catalyse, Polymères et Procédés, Université Claude Bernard Lyon 1, 69616 Villeurbanne cedex, France.
authors.forename: Franck
authors.initials: F
authors.lastname: D'Agosto
authors.affiliation: Laboratoire de Chimie, Catalyse, Polymères et Procédés, Université Claude Bernard Lyon 1, 69616 Villeurbanne cedex, France.
authors.forename: Elodie
authors.initials: E
authors.lastname: Bourgeat-Lami
authors.affiliation: Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
authors.forename: Joseph L
authors.initials: JL
authors.lastname: Keddie
authors.affiliation: Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
authors.forename: Richard P
authors.initials: RP
authors.lastname: Sear