Regensburg 2007 – scientific programme
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BP: Fachverband Biologische Physik
BP 26: Poster Session II
BP 26.16: Poster
Thursday, March 29, 2007, 17:00–19:30, Poster B
Flow Profile Measurements in a Traveling Wave Micropump with Two-Foci-FCCS — •Wolfgang Staroske1, Maika Felten2, and Petra Schwille1 — 1Institut für Biophysik, BIOTEC / TU Dresden, Dresden, Germany — 2Frauenhofer Institute für Biomedizin Technik, Potsdam, Germany
The traveling wave micro-pump is a new technique to transport liquids and particles, for example cells in a micro fluidic chip. The flow in regions of the pump electrodes is highly turbulent and therefor difficult to measure with imaging techniques. We used spatial two-foci Fluorescence Cross-Correlation Spectroscopy to measure flow profiles in different directions inside the micro-pump. First evaluation show reasonable flow profiles. The evaluation also highlighted that the commonly used model for spatial FCCS with flow is not accurate enough for the correct determination of the velocity direction.