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

@article{Roch2009EffectOS,
  title={Effect of surface tension variations on the pinch-off behavior of small fluid drops in the presence of surfactants.},
  author={Matthieu Roch{\'e} and Mounir Aytouna and Daniel Bonn and Hamid Kellay},
  journal={Physical review letters},
  year={2009},
  volume={103 26},
  pages={
          264501
        }
}
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… CONTINUE READING

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