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Sph Based Optimization Of Electrowetting-Driven Digital Microfluidics With Advanced Actuation Patterns

Author

Listed:
  • DENNIS WEIß

    (Institute for Microsystems Engineering (IMTEK), University of Freiburg, 79110 Freiburg, Germany)

  • ANDREAS GREINER

    (Institute for Microsystems Engineering (IMTEK), University of Freiburg, 79110 Freiburg, Germany)

  • JAN LIENEMANN

    (Institute for Microsystems Engineering (IMTEK), University of Freiburg, 79110 Freiburg, Germany;
    Schmidt & Partner Engineering AG (SPEAG), 8004 Zuerich, Switzerland)

  • JAN G. KORVINK

    (Institute for Microsystems Engineering (IMTEK), University of Freiburg, 79110 Freiburg, Germany;
    Institute for Advanced Studies (FRIAS), University of Freiburg, 79104 Freiburg, Germany)

Abstract

Fast and thorough mixing is a crucial operation of digital microfluidic devices, where discrete and small fluid portions are moved and processed. In this paper, we want to analyze and to optimize the mixing process by substituting conventional motion and superposing oscillatory and translational modes. An accurate multiphase smoothed particle hydrodynamics (SPH) discretization for incompressible flow is instantiated. Different harmonic excitation patterns for the solid–liquid surface energy are applied and their influence on droplet mode shapes, formation of eddies and the Shannon entropy of droplet fluid components are measured. We tailor enhanced actuation patterns which improve mixing grade and reduce mixing time.

Suggested Citation

  • Dennis Weiß & Andreas Greiner & Jan Lienemann & Jan G. Korvink, 2013. "Sph Based Optimization Of Electrowetting-Driven Digital Microfluidics With Advanced Actuation Patterns," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 24(12), pages 1-7.
    • Handle: RePEc:wsi:ijmpcx:v:24:y:2013:i:12:n:s0129183113400123
    DOI: 10.1142/S0129183113400123
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