Oil-in-water droplet formation in hydrophobic PDMS device using three-dimensional protruded taper channel

Chenwei Tang, Dong Hyun Yoon, Tetsushi Sekiguchi, Shuichi Shoji

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

Abstract

We developed an oil-in-water droplet formation method in a 3D stacked PDMS device without hydrophilic treatment using structural feature only. Three-dimensional junction shape of oil-water phase injection channels suppressed contact and spreading of oil on the wall surface which was critical problem of droplet formation for unfavourable wetting condition. Dimension of droplets formed under various flow conditions was provided and effects of each channel's shape on the droplet formation results were evaluated. The proposed structure can be used as a droplet generator and element for droplet based researches employing various materials.

Original languageEnglish
Title of host publication22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018
PublisherChemical and Biological Microsystems Society
Pages395-397
Number of pages3
ISBN (Electronic)9781510897571
Publication statusPublished - 2018
Event22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018 - Kaohsiung, Taiwan, Province of China
Duration: 2018 Nov 112018 Nov 15

Publication series

Name22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018
Volume1

Conference

Conference22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018
CountryTaiwan, Province of China
CityKaohsiung
Period18/11/1118/11/15

Keywords

  • 3D microfluidics
  • Isolated protrusion-end
  • Oil-in-water droplet

ASJC Scopus subject areas

  • Chemistry(all)
  • Bioengineering
  • Chemical Engineering (miscellaneous)
  • Control and Systems Engineering

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  • Cite this

    Tang, C., Yoon, D. H., Sekiguchi, T., & Shoji, S. (2018). Oil-in-water droplet formation in hydrophobic PDMS device using three-dimensional protruded taper channel. In 22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018 (pp. 395-397). (22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018; Vol. 1). Chemical and Biological Microsystems Society.