Instability of stretched and twisted soap films in a cylinder

Details Instability of stretched and twisted soap films in a cylinder Instability of stretched and twisted soap films in a cylinder

2012-04-19

arxiv.org/abs/1204.4356v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

A soap film, or a flexible membrane without bending and torsional stiffness, that is confined in a cylinder is shown to be susceptible to a surface-tension-driven instability when it is stretched or twisted. This leads to its breakdown and places an upper limit on the aspect ratio of such structures. A simple analysis confirms the values for the critical aspect ratio of the stretched film found in both simulations and experiments on soap films, and this threshold decreases with increasing twist of the film.

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