title: Inhibition of the finite-time singularity during droplet fission of a polymeric fluid.
abstract: When a drop of fluid detaches from a capillary, singular behavior ensues. We show that the addition of very small amounts of polymer inhibits this singularity in an abrupt way and gives rise, after a period of self-similar dynamics as for simple liquids, to long-lived cylindrical necks or filaments which thin exponentially in time. This abrupt change occurs when the elongation rate epsilon* becomes comparable to the inverse of the polymer relaxation time leading to a large elongational viscosity eta(E) of the dilute polymer solution.
authors.affiliation: Centre de Physique Moléculaire Optique et Hertzienne, Université Bordeaux1, UMR 5798, 351 cours de la liberation 33405 Talence, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Amarouchene
authors.forename: D
authors.initials: D
authors.lastname: Bonn
authors.forename: J
authors.initials: J
authors.lastname: Meunier
authors.forename: H
authors.initials: H
authors.lastname: Kellay