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Berlin 2015 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 23: Interfaces and Thin Films I (joint session CPP, DS)

CPP 23.2: Vortrag

Dienstag, 17. März 2015, 10:15–10:30, C 243

Morphometric thermodynamics and interface conventions — •Andreas Reindl, Markus Bier, and S. Dietrich — Max Planck Institute IS, University of Stuttgart, Germany

Several model fluids with small number densities in contact with planar, spherical and cylindrical walls are investigated within density functional theory. The dependence of the interfacial tension on the curvature of spherical and cylindrical walls is examined and compared to the expression derived within the framework of morphometric thermodynamics. Particular attention is paid to the influence of the choice of the interface location, which underlies the definition of the interfacial tension. We found that morphometric thermodynamics is never exact for the considered systems and that its quality as an approximation depends on the choice of the interface.

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