Regensburg 2007 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 17: Micro and Nano Fluidics I: Structured Substrates

CPP 17.4: Talk

Wednesday, March 28, 2007, 15:00–15:15, H37

Motion of nanodroplets near edges and wedges — A. Moosavi^1,2, •M. Rauscher^1,2, and S. Dietrich^1,2 — ¹Max-Planck-Institut für Metallforschung, Heisenbergstr. 3, 70569 Stuttgart — ²Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart

Nanodroplets residing near wedges or edges of solid substrates exhibit a disjoining pressure induced dynamics. Our nanoscale hydrodynamic calculations reveal that non-volatile droplets are attracted or repelled from edges or wedges depending on details of the corresponding laterally varying disjoining pressure generated, e.g., by a possible surface coating. [A. Moosavi et al.,Phys. Rev. Lett. 97, 236101 (2006)]