This article has an erratum: [erratum]
Volume 64, Number 5, December 2003
|Page(s)||709 - 715|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 November 2003|
Two-dimensional shear modulus of a Langmuir foam
Laboratoire de Spectrométrie Physique (UMR 5588 CNRS, Université J. Fourier Grenoble 1) BP 87, F-38402 Saint Martin d'Hères cedex, France
2 Laboratoire des Milieux Désordonnés et Hétérogènes (UMR 7603 CNRS, Université Paris 6) case 78, 4 place Jussieu, F-75252 Paris cedex 05, France
3 Max Planck Institut of Colloids and Interfaces Am Mühlenberg 1, D-14476 Golm, Germany
Corresponding author: email@example.com
Accepted: 16 September 2003
We deform a two-dimensional (2D) foam, created in a Langmuir monolayer, by applying a mechanical perturbation, and simultaneously image it by Brewster-angle microscopy. We determine the foam stress tensor (through a determination of the 2D gas-liquid line tension, ) and the statistical strain tensor, by analyzing the images of the deformed structure. We deduce the 2D shear modulus of the foam, . The foam effective rigidity is predicted to be , which agrees with the value obtained in an independent mechanical measurement.
PACS: 83.80.Iz – Emulsions and foams / 68.18.-g – Langmuir-Blodgett films on liquids / 62.20.Dc – Elasticity, elastic constants
© EDP Sciences, 2003
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