Droplet behavior on flat and textured surfaces: co-occurrence of Deegan outward flow with Marangoni solute instability |
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| Authors: | Bormashenko Edward Bormashenko Yelena Pogreb Roman Stanevsky Oleg Whyman Gene |
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| Institution: | The College of Judea and Samaria, the Research Institute, 44837 Ariel, Israel. edward@yosh.ac.il |
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| Abstract: | It is demonstrated experimentally that the solution droplet behavior is governed by the co-occurrence of outward hydrodynamic and surface tension (solute Marangoni) induced flows. Potassium ferrocyanide allows the effective visualization of the processes taking place in the droplet. Wetting properties of the substrate govern the shape evolution of the evaporated droplet. Quantitative estimation of the wetting properties of textured polymer surface is presented. |
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