Coalescence and mixing of droplets with identical and distinct surface tensions on a wettability gradient surface

Wei Feng Fang, Szu I. Yeh, Chen Ling Lai, Yu Tzu Chen, Jing Tang Yang

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

1 Citation (Scopus)

Abstract

This study investigates the influence of identical and distinct surface tensions on droplet coalescence and mixing processes after a head-on collision between a moving droplet and a stationary droplet on a wettability gradient surface (made from the self-assembly monolayer, SAM technique) by micro-PIV (particle image velocimetry) measurement and micro-LIF (laser induced fluorescence) technique. The results demonstrate that coalescence of the droplets with distinct surface tensions achieves superior mixing quality to that of the droplet with identical surface tension. This study would significantly contribute to the issue of droplet mixing and reaction in a microfluidic open system.

Original languageEnglish
Title of host publication15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Pages254-256
Number of pages3
Publication statusPublished - 2011 Dec 1
Event15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011 - Seattle, WA, United States
Duration: 2011 Oct 22011 Oct 6

Publication series

Name15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Volume1

Other

Other15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
CountryUnited States
CitySeattle, WA
Period11-10-0211-10-06

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering

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