Mathematical and experimental study on backward flow in a surface tension driven micropump

Jongil Ju, Joong Yull Park, Erwin Berthier, David J. Beebe, Sang Hoon Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A surface tension driven micropump proves to be a simple and attractive passive method to drive fluid flow in microdevices. We observed the appearance of a backward flow. Consideration of inertia of the fluid in the channel revealed that it alone is insufficient to explain the observed backward flow. We discovered that rotational flow inside the outlet droplet could be a source of inertia explaining the generation of the backward flow. We have determined that the volumes ratio of the initial outlet- inlet drop correlate with the occurrence of the backward flow.

Original languageEnglish
Title of host publication12th International Conference on Miniaturized Systems for Chemistry and Life Sciences - The Proceedings of MicroTAS 2008 Conference
PublisherChemical and Biological Microsystems Society
Pages44-46
Number of pages3
Publication statusPublished - 2008 Jan 1
Event12th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2008 - San Diego, CA, United States
Duration: 2008 Oct 122008 Oct 16

Other

Other12th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2008
CountryUnited States
CitySan Diego, CA
Period08/10/1208/10/16

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ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Bioengineering

Cite this

Ju, J., Park, J. Y., Berthier, E., Beebe, D. J., & Lee, S. H. (2008). Mathematical and experimental study on backward flow in a surface tension driven micropump. In 12th International Conference on Miniaturized Systems for Chemistry and Life Sciences - The Proceedings of MicroTAS 2008 Conference (pp. 44-46). Chemical and Biological Microsystems Society.