Measuring the 3D motion of particles in microchannel acoustophoresis using astigmatism particle tracking velocimetry

P. Augustsson, R. Barnkob, H. Bruus, C.J. Kähler, T. Laurell, Á.G. Marín, P.B. Muller, M. Rossi

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

Abstract

We introduce full three-dimensional tracking of particles in an acoustophoresis microchannel using Astigmatism Particle Tracking Velocimetry (APTV) [1]. For the first time the interaction between acoustic streaming and the primary acoustic radiation force in microchannel acoustophoresis are examined in three dimensions. We have quantified the velocity of particles driven by the primary acoustic radiation force and acoustic streaming, respectively, using 0.5-μm and 5-μm particles. Increased ultrasound frequency and lowered viscosity of the medium reduced the influence of acoustic streaming relative to the influence from the acoustic radiation force. The current study opens the route to optimized acoustophoretic system design and operation to enable manipulation of small biological components such as spores, bacteria and viruses.
Original languageEnglish
Title of host publicationProceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012
Pages1480-1482
Publication statusPublished - 2012
Externally publishedYes
Event16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2012 - Okinawa, Japan
Duration: 28 Oct 20121 Nov 2012
Conference number: 16

Conference

Conference16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2012
Abbreviated titleMicroTAS
CountryJapan
CityOkinawa
Period28/10/121/11/12

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