Screening in two-dimensional foams

Simon Cox (1) , François Graner (2) , M.F. Vaz (3)

1 IMAPCS - Institute of Mathematical, Physics and Computer Sciences
2 LSP - Laboratoire de Spectrométrie Physique
3 IST - Instituto de Ciência e Engenharia de Materiais e Superficies

Using the Surface Evolver software, we perform numerical simulations of point-like deformations in a two-dimensional foam. We study perturbations which are infinitesimal or finite, isotropic or anisotropic, and we either conserve or do not conserve the number of bubbles. We measure the displacement fields around the perturbation. Changes in pressure decrease exponentially with the distance to perturbation, indicating a screening over a few bubble diameters.

Domaines: Matière Molle [cond-mat.soft]

Simon Cox, François Graner, M.F. Vaz. Screening in two-dimensional foams. 2008. ⟨hal-00262087⟩