Effect of surface tension variations on the pinch-off behavior of small fluid drops in the presence of surfactants
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| Publication date | 2009 |
| Journal | Physical Review Letters |
| Volume | Issue number | 103 | 26 |
| Pages (from-to) | 264501 |
| Number of pages | 4 |
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| Abstract | 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. |
| Document type | Article |
| Published at |
https://doi.org/10.1103/PhysRevLett.103.264501
(Final published version)
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