Effect of surface tension variations on the pinch-off behavior of small fluid drops in the presence of surfactants
| Authors |
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| Publication date |
2009
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| Journal |
Physical Review Letters
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| Volume | Issue number |
103 | 26
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| Pages (from-to) |
264501
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| Number of pages |
4
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| Organisations |
-
Faculty of Science (FNWI) - Institute of Physics (IoP) - Van der Waals-Zeeman Institute (WZI)
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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.
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| Document type |
Article
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| Published at |
https://doi.org/10.1103/PhysRevLett.103.264501
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