https://doi.org/10.1051/epjconf/201611402052
A liquid interaction with ultrahydrophobic surfaces
1 Department of Physical Measurement, Technical University of Liberec, The Institute for Nanomaterials, Advanced Technology and Innovation, Studentska 1402/2 Liberec 1 461 17, Czech Republic
2 Faculty of mechanical engineering, Brno University of Technology, Technicka 2896/0, Kralovo Pole, 61669, Brno, Czech Republic
a Corresponding author: darina.jasikova@tul.cz
Published online: 28 March 2016
The interaction of the liquid with ultra-hydrophobic surfaces was so far studied through estimation of static contact angles. It appears now that this interaction is more complex, and cannot be described only with static methods. Effect of ultra-hydrophobic surfaces and their advantages are also particularly in dynamic interaction with liquids. One of the parameters that determine the character of the dynamic interaction is presence of air film close to the surface. The thickness of air film can be measured with long distance microscopy and the interaction with the flow using micro PIV method. Here we present the results of measurements of the air film that is created close to ultra-hydrophobic surfaces and the dependence of its thickness on the Re number.
© Owned by the authors, published by EDP Sciences, 2016
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