title: Singular thin viscous sheet.
abstract: The evolution of a thin viscous layer is usually smooth. Here we conduct an experiment where the layer adopts a singular shape. Using the analogy between the flow of a viscous liquid and the deformation of an elastic solid, the theoretical analysis predicts a conical shape for the sheet and is in quantitative agreement with the experiment.
authors.affiliation: Laboratoire de Physique Statistique de l'ENS, CNRS, Universités Paris VI et Paris VII, 24 rue Lhomond, F-75231 Paris Cedex 05, France.
authors.forename: A
authors.initials: A
authors.lastname: Boudaoud
authors.forename: S
authors.initials: S
authors.lastname: Chaïeb