Quantifying the acoustic field in a microchannel using microswimmers as measurement probes

Minji Kim, Rune Barnkob, J. Mark Meacham

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Rapid and accurate experimental characterization tools can advance development of acoustic microfluidic devices. We previously reported qualitative mapping of acoustic pressure fields using living microswimmers as active probes.1 Here, we apply this method for quantitative measurement of the acoustic energy density as an alternative to conventional particle tracing. Mass density and compressibility of motile Chlamydomonas reinhardtii (CR) algae cells were measured. The acoustic energy density within a straight microchannel driven at the first half-wavelength resonance was then calculated using the balance of swimming and acoustic radiation forces. Measurements are nearly equivalent to those obtained using acoustophoretic migration of passive particles.

Original languageEnglish
Title of host publicationMicroTAS 2020 - 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences
PublisherChemical and Biological Microsystems Society
Pages162-163
Number of pages2
ISBN (Electronic)9781733419017
StatePublished - 2020
Event24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2020 - Virtual, Online
Duration: Oct 4 2020Oct 9 2020

Publication series

NameMicroTAS 2020 - 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences

Conference

Conference24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2020
CityVirtual, Online
Period10/4/2010/9/20

Keywords

  • Acoustofluidics
  • Microswimmers
  • Performance Measurement
  • Pressure Mapping

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