Bouncing or sticky droplets : impalement transitions on micropatterned surfaces

  title={Bouncing or sticky droplets : impalement transitions on micropatterned surfaces},
  author={Denis Bartolo and Farid Bouamrirene and {\'E}milie Verneuil and Axel Buguin and Pascal Silberzan and S{\'e}bastien Moulinet},
– When a liquid drops impinges a hydrophobic rough surface it can either bounce off the surface (fakir droplets) or be impaled and strongly stuck on it (Wenzel droplets). The analysis of drop impact and quasi static ”loading” experiments on model microfabricated surfaces allows to clearly identify the forces hindering the impalement transitions. A simple semi-quantitative model is proposed to account for the observed relation between the surface topography and the robustness of fakir non… CONTINUE READING


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