Topological changes in a two-dimensional foam cluster

Denis Weaire, Simon Cox, M. Fatima Vaz

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Experiments on a small cluster of bubbles in a nominally two-dimensional foam show an instability in which a topological change forces one of the bubbles to be ejected to the outside of the cluster at ap oint where this is not predicted by at wo-dimensional model of afoa m. This is interpreted in terms of the energy of the initial and ejected states and of the finite liquid content of the experimental system. A description of the distribution of liquid in various experimental set-ups suggests that the exact response may depend critically upon the type of system used. This is demonstrated experimentally with reference to small clusters of bubbles undergoing a single topological change.
Original languageEnglish
Pages (from-to)29-35
Number of pages7
JournalEuropean Physical Journal E
Issue number1
Publication statusPublished - 2003


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