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http://dx.doi.org/10.3795/KSME-B.2009.33.8.559

A Molecular Dynamics Simulation for the Moving Water Droplet on Atomistically Smooth Solid Surface  

Hong, Seung-Do (부산대학교 기계공학부 대학원)
Ha, Man-Yeong (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.33, no.8, 2009 , pp. 559-564 More about this Journal
Abstract
The variation in the shape of water droplet moving on atomistically smooth solid surface in the presence of a constant body force is simulated using molecular dynamics simulation. We investigated how the advancing and receding contact angle of the moving water droplet changes on a solid surface having various characteristic energies. From the MD simulation results, we obtained the density profile defined as the number of water molecules at a given position. Then, assuming the water droplet periphery to be a circle, we calculated the contact angles by using a nonlinear fitting of the half-density contour line. The present simulation clearly shows the different profile of the advancing and receding contact angle for these three different interaction potential between the water droplet and the solid surface.
Keywords
Water Droplet; Contact Angle; Hydrophobic; Hydrophilic; Molecular Dynamics Simulation;
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