Surface acoustic wave based droplet merging on demand

Muhsincan Sesen, Tuncay Alan, Adrian Neild

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

Abstract

In this study, a microfluidic chip is developed where surface acoustic waves (SAWs) are used to merge multiple droplets on demand. Acoustic radiation forces induced in the liquid medium are shown to trap droplets while they are passing from a microchannel to an expansion chamber. Droplets stay immobilized until successive droplets arrive and merge. As the droplet volume increases beyond a critical value, drag forces exceed the existing acoustic radiation forces and cause the merged droplet to exit the expansion chamber. The number of successive droplets that can be merged depend on the initial droplet size and applied power for actuation.

Original languageEnglish
Title of host publication18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014
PublisherChemical and Biological Microsystems Society
Pages1653-1655
Number of pages3
ISBN (Electronic)9780979806476
Publication statusPublished - 2014
Event18th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2014 - San Antonio, United States
Duration: 26 Oct 201430 Oct 2014

Conference

Conference18th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2014
Abbreviated titleMicroTAS 2014
CountryUnited States
CitySan Antonio
Period26/10/1430/10/14

Keywords

  • Droplet
  • Merging
  • Microfluidics
  • Surface Acoustic Waves

ASJC Scopus subject areas

  • Control and Systems Engineering

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