title: Self-similar etching.
abstract: When a fiber is brought into contact with a soft etching liquid, a conical tip is generally shaped. We show here that the use of corrosive liquids which release gases during the etching reaction may lead to original self-similar shapes, because of successive pinning and detachment of the meniscus. The conditions for the formation of this shape and its evolution are described. In particular, we stress the effect of convection due to released bubbles.
authors.affiliation: Physique et Mécanique des Milieux Hétérogènes, UMR 7636 du CNRS, Ecole Supérieure de Physique et Chimie Industrielles, 10, rue Vauquelin, 75231 Paris Cedex 05, France.
authors.forename: José
authors.initials: J
authors.lastname: Bico
authors.forename: Jérôme
authors.initials: J
authors.lastname: Vierling
authors.forename: Aurélien
authors.initials: A
authors.lastname: Vigano
authors.forename: David
authors.initials: D
authors.lastname: Quéré