2020 Impact factor 1.890
Soft Matter and Biological Physics
Eur. Phys. J. E 11, 95-97 (2003)
DOI: 10.1140/epje/i2002-10148-3

Instabilities in foam clusters related to the pressures in the bubbles

M.F. Vaz and M.A. Fortes

ICEMS - Instituto de Ciência e Engenharia de Materiais e Superfícies and Departamento de Engenharia de Materiais, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001, Lisboa, Portugal

fatima.vaz@ist.utl.pt

(Received 20 September 2002 and Received in final form 22 December 2002 / Published online: 27 May 2003)

Abstract
We reinterpret an instability in a two-dimensional free foam cluster previously discussed by Weaire et al. (Eur. Phys. J. E 7, 123 (2002)) in terms of the excess pressure in the bubbles. We conclude that in a free foam cluster no bubble can have a pressure below that of the surrounding gas.

PACS
82.70.Rr - Aerosols and foams.

© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2003