Particle Trajectories and Transverse Dispersion in Acoustic Microfluidic Devices

Gergely Simon, Gergely Hantos, Matěj Hejda, Anne Bernassau, Marc Phillipe Yves Desmulliez

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

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The difference in residence time spent by particles in acoustic separator devices correlates to the values of the efficiency and purity coefficients. Although the particle trajectories and the required flow speeds have been investigated in theoretical and numerical studies, most of the existing studies overlook the effect of transverse flow profiles. More complex sorter methods, such as tilted-angle or frequency-modulated methods however can be better understood by applying analysis based on flow profiles. A numerical integration scheme is used here to obtain axial particle trajectories for arbitrary flow profiles with residence time differences of up to 20% for simple time-of-flight sorting. For more complex phase modulated techniques, a non-monotonous dependence of residence time on particle size is observed, with differences up to 27%.
Original languageEnglish
Title of host publication2021 IEEE International Ultrasonics Symposium (IUS)
ISBN (Electronic)9781665403559
Publication statusPublished - 15 Nov 2021
Event2021 IEEE International Ultrasonics Symposium - Xi'an, China
Duration: 11 Sept 202116 Sept 2021


Conference2021 IEEE International Ultrasonics Symposium
Abbreviated titleIUS 2021


  • acoustic radiation force
  • microfluidics
  • numerical techniques
  • particle separation
  • stochastic

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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