Mechanically and directionally tunable soft step emulsification

Seungman Choi, Naotomo Tottori, Takasi Nisisako

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

Abstract

We propose a novel concept, Soft Step Emulsification (SSE): actively-tunable geometry-dependent droplet generation in an elastic device. By mechanically stretching a whole device made of polydimethylsiloxane (PDMS), we induce deformation of internally confined micro nozzles, tuning the droplet break-off in step emulsification. The shrinkage/expansion of the nozzles could be switched when changing directions of stretching by 90°, allowing us to flexibly tune the sizes of water-in-oil (W/O) droplets in the combined range of 9-18 µm with CVs of 5-8%.

Original languageEnglish
Title of host publication22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018
PublisherChemical and Biological Microsystems Society
Pages216-217
Number of pages2
ISBN (Electronic)9781510897571
Publication statusPublished - Jan 1 2018
Externally publishedYes
Event22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018 - Kaohsiung, Taiwan, Province of China
Duration: Nov 11 2018Nov 15 2018

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
Period11/11/1811/15/18

All Science Journal Classification (ASJC) codes

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

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