The Marangoni flow of soluble amphiphiles

  title={The Marangoni flow of soluble amphiphiles},
  author={Matthieu Roch'e and Zhenzhen Li and Ian M. Griffiths and S{\'e}bastien Le Roux and Isabelle Cantat and Arnaud Saint-Jalmes and Howard A. Stone},
  journal={Physical Review Letters},
Surfactant distribution heterogeneities at a fluid/fluid interface trigger the Marangoni effect, i.e. a bulk flow due to a surface tension gradient. The influence of surfactant solubility in the bulk on these flows remains incompletely characterized. Here we study Marangoni flows sustained by injection of hydrosoluble surfactants at the air/water interface. We show that the flow extent increases with a decrease of the critical micelle concentration, i.e. the concentration at which these… 

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