| Soap films burst like flapping flags. | |
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MedLine Citation:
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PMID: 19792505 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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When punctured, a flat soap film bursts by opening a hole driven by liquid surface tension. The hole rim does not, however, remain smooth but soon develops indentations at the tip of which ligaments form, ultimately breaking and leaving the initially connex film into a mist of disjointed drops. We report on original observations showing that these indentations result from a flaglike instability between the film and the surrounding atmosphere inducing an oscillatory motion out of its plane. Just like a flag edge flaps in the wind, the film is successively accelerated on both sides perpendicularly to its plane, inducing film thickness modulations and centrifuging liquid ligaments that finally pinch off to form the observed spray. This effect exemplifies how the dynamics of fragile objects such as thin liquid films is sensitive to their embedding medium. |
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Authors:
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Henri Lhuissier; Emmanuel Villermaux |
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Publication Detail:
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Type: Journal Article Date: 2009-07-28 |
Journal Detail:
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Title: Physical review letters Volume: 103 ISSN: 0031-9007 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2009 Jul |
Date Detail:
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Created Date: 2009-10-01 Completed Date: 2009-10-13 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 054501 Citation Subset: - |
Affiliation:
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Aix-Marseille Université, IRPHE, 13384 Marseille Cedex 13, France. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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