Regensburg 2007 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 25: Micro and Nano Fluidics III: Lab-on-Chip Geometries
CPP 25.6: Vortrag
Donnerstag, 29. März 2007, 18:45–19:00, H37
Atomistic simulation of nanoscale wicking — •Björn Henrich1, Mark Santer1,2, and Michael Moseler1,3 — 1Fraunhofer Institut für Werkstoffmechanik IWM, Wöhlerstraße 11, D-79108 Freiburg — 2IMTEK-Institut für Mikrosystemtechnik, Lehrstuhl für Anwendungsentwicklung, Georges-Köhler-Allee 106, D-79110 Freiburg — 3Freiburger Materialforschungszentrum (FMF), Stefan-Meier-Straße 21, D-79104 Freiburg
We present extensive molecular dynamics simulations of fluid propane in gold nanopores. In particular, the impregnation dynamics into a slit is investigated and compared to a continuum model, namely an extended Washburn equation which takes into account inertia, slip induced by an atomistic precursor film and the evolution of the dynamic contact angle. The latter is also extracted from stationary plug flow simulations and is found to agree with those found in the wicking simulation after a short period dominated by inertial effects.