Regensburg 2007 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 19: POSTER: Micro and Nano Fluidics
CPP 19.9: Poster
Mittwoch, 28. März 2007, 16:00–18:30, Poster B
Shear flow pumping in open microfluidic systems — •Markus Rauscher1,2, Siegfried Dietrich1,2, and Joel Koplik3 — 1Max-Planck-Institut für Metallforschung, Heisenbergstr. 3, 70569 Stuttgart — 2Institut für Theoretische und Angewandte Physik, Universität Stuttgart, 70569 Stuttgart — 3Benjamin Levich Institute and Department of Physics, City College of the City University of New York, New York, NY 10031, USA
We propose to drive open microfluidic systems by shear in a covering fluid layer, e.g., oil covering water-filled chemical channels. The advantages as compared to other means of pumping are simpler forcing and prevention of evaporation of volatile components. We calculate the expected throughput for straight channels and show that devices can be built with off-the-shelf technology. Molecular dynamics simulations suggest that this concept is scalable down to the nanoscale.