8th European Postgraduate Fluid Dynamics Conference

6th – 9th July 2016
Warsaw, Poland

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Dynamic contact angle of water droplet on superhydrophobic surfaces

Michal Remer1, Kacper Stasiuk1, Grzegorz Sobieraj1, Jacek Rokicki1, Konrad Gumowski1, Beata Stańczyk2, Lech Dobrzański2
1Institute of Aeronautics and Applied Mechanics, Departament of Aerodynamics, Warsaw University of Technology
2Institute of Electronic Materials Technology
Presented workinvestigates and analyses dynamic contact of droplet at super-hydrophobic surfaces with a regular first order structure.Two silicon surfaces are investigated, differ only inthe nanostructure. Test stand equipped with fast camera and in-house software eligible to obtain repetability and knowledge about the physical parameters of droplets. Droplet impact were carried for different experimental cases.The crucial quantities - contact angle and maximal diameter of droplet, are obtained.Dynamic contact angle change have been confirmed. Modifications of the nanostructure in that surfaces, influence dropletimpact
Keywords: Multiphase flows, Experimental techniques, Droplets