Observations of different oscillation modes and control of droplet sequence in alternating droplet generation

Eujin Um, Hyoungsoo Kim, Joonwoo Jeong, Howard A. Stone

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

Abstract

Controlling the sequence of microdroplet generation is useful for quantitative manipulation of multiple fluids, but little understanding is available for how the sequence can be determined based upon the geometry of a microchannel and the fluid properties. In this work, we study the design of a double Tjunction microchannel, and observe that there are three modes of oscillations of the droplet generation: i) one by one alternate generation, ii) synchronization, and iii) fluctuations. We also report that if the fluids from the two branches have asymmetric properties (e.g. viscosity), we can change the ratios of the droplets in sequence.

Original languageEnglish (US)
Title of host publicationMicroTAS 2015 - 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences
PublisherChemical and Biological Microsystems Society
Pages1041-1043
Number of pages3
ISBN (Electronic)9780979806483
StatePublished - Jan 1 2015
Event19th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2015 - Gyeongju, Korea, Republic of
Duration: Oct 25 2015Oct 29 2015

Publication series

NameMicroTAS 2015 - 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences

Other

Other19th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2015
CountryKorea, Republic of
CityGyeongju
Period10/25/1510/29/15

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering

Fingerprint Dive into the research topics of 'Observations of different oscillation modes and control of droplet sequence in alternating droplet generation'. Together they form a unique fingerprint.

  • Cite this

    Um, E., Kim, H., Jeong, J., & Stone, H. A. (2015). Observations of different oscillation modes and control of droplet sequence in alternating droplet generation. In MicroTAS 2015 - 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences (pp. 1041-1043). (MicroTAS 2015 - 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences). Chemical and Biological Microsystems Society.