Abstract

This paper presents a unique microscale phenomenon as a possible approach for harnessing surface tension-confined microfluidics, facilitated by the Marangoni effect. Spontaneous flow pulses were generated between droplets with different surface tensions, where the pulsing frequency was a function of the surface tension gradient. We show that the Marangoni effect-driven flow can be used to deliver liquid in small open channels where the boundaries of channels are defined not by solid structures, but by hydrophilic/hydrophobic patterns.

Original languageEnglish (US)
Title of host publicationProceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences
PublisherChemical and Biological Microsystems Society
Pages61-63
Number of pages3
ISBN (Print)9780979806421
StatePublished - Jan 1 2009
Event13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009 - Jeju, Korea, Republic of
Duration: Nov 1 2009Nov 5 2009

Publication series

NameProceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences

Other

Other13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009
CountryKorea, Republic of
CityJeju
Period11/1/0911/5/09

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Keywords

  • Marangoni effect
  • Microfluidic pumping
  • Surface tension

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Bioengineering

Cite this

Chao, S-H., & Meldrum, D. (2009). Liquid pumping with surface tension-confined microfluidics. In Proceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences (pp. 61-63). (Proceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences). Chemical and Biological Microsystems Society.