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Effect of surface tension variations on the pinch-off behavior of small fluid drops in the presence of surfactants

Roché, M ; Aytouna, M ; Bonn, D ; Kellay, H

Physical review letters, 2009-12, Vol.103 (26), p.264501-264501, Article 264501 [Periódico revisado por pares]

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Título:
Effect of surface tension variations on the pinch-off behavior of small fluid drops in the presence of surfactants
Autor: Roché, M ; Aytouna, M ; Bonn, D ; Kellay, H
Assuntos: Condensed Matter ; Fluid Dynamics ; Physics ; Soft Condensed Matter
É parte de: Physical review letters, 2009-12, Vol.103 (26), p.264501-264501, Article 264501
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
Descrição: It is shown experimentally that surfactants can change the thinning rate of fluid necks undergoing rupture. In the case of two-fluid pinch-off, two or three linear regimes are observed for the variation of the neck radius versus time. The surface tension in the neck region changes with time, as a result of surfactant depletion. Similar results are obtained for the case of a single fluid pinching in air. The depletion of surfactant can be either partial or complete depending on the rate of transport of the surfactant from the bulk to the surface.
Editor: United States: American Physical Society
Idioma: Inglês

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