Single Droplet on Micro Square-Post Patterned Surfaces - Theoretical Model and Numerical Simulation

Scientific Reports
Y Q Zu, Y Y Yan

Abstract

In this study, the wetting behaviors of single droplet on a micro square-post patterned surface with different geometrical parameters are investigated theoretically and numerically. A theoretical model is proposed for the prediction of wetting transition from the Cassie to Wenzel regimes. In addition, due to the limitation of theoretical method, a numerical simulation is performed, which helps get a view of dynamic contact lines, detailed velocity fields, etc., even if the droplet size is comparable with the scale of the surface micro-structures. It is found that the numerical results of the liquid drop behaviours on the square-post patterned surface are in good agreement with the predicted values by the theoretical model.

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Citations

May 12, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Nikolaj Kofoed Mandsberg, Rafael Taboryski
Jun 29, 2018·Advanced Materials·Won-Kyu LeeTeri W Odom

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Methods Mentioned

BETA
scanning microscopy

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