title: Bending modulus of bidisperse particle rafts: Local and collective contributions.
abstract: The bending modulus of air-water interfaces covered by a monolayer of bidisperse particles is probed experimentally under quasistatic conditions via the compression of the monolayer, and under dynamical conditions studying capillary-wave propagation. Simple averaging of the modulus obtained solely with small or large particles fails to describe our data. Indeed, as observed in other configurations for monodisperse systems, bidisperse rafts have both a granular and an elastic character: chain forces and collective effects must be taken into account to fully understand our results.
authors.affiliation: Institut Lumière Matière, Université de Lyon, UMR 5306 Université Lyon 1-CNRS, 69622 Villeurbanne, France.
authors.forename: Pauline
authors.initials: P
authors.lastname: Petit
authors.affiliation: Institut Lumière Matière, Université de Lyon, UMR 5306 Université Lyon 1-CNRS, 69622 Villeurbanne, France.
authors.forename: Anne-Laure
authors.initials: AL
authors.lastname: Biance
authors.affiliation: Laboratoire Navier, Université Paris-Est, UMR 8205 CNRS, Ecole des Ponts ParisTech, IFSTTAR, 77420 Champs sur Marne, France.
authors.forename: Elise
authors.initials: E
authors.lastname: Lorenceau
authors.affiliation: Institute of Fluid Mechanics and Heat Transfer, Graz University of Technology, Austria and Research Center Pharmaceutical Engineering GmbH, Graz, Austria.
authors.forename: Carole
authors.initials: C
authors.lastname: Planchette