Streaming direction and microparticle size effects in standing surface acoustic wave (SAW) devices

R. Barnkob, N. Nama, L. Ren, T. J. Huang, Francesco Costanzo, C. J. Kähler

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

Abstract

We report surprising and exciting physical understanding within microparticle acoustophoresis inside standing SAW-driven PDMS microchannels. The new insights are based on experimental measurements by high-resolution 3D particle tracking and numerical calculations employing a Lagrangian velocity-based formulation. In contradiction to existing literature, the acoustic streaming flows towards the actuation displacement node near the actuated substrate and its amplitude is smaller by an order of magnitude. The latter affects the transition size for which the particle motion is dominated by either the streaming-induced drag or the acoustic radiation force. These new findings will be crucial for further progress in SAW-driven microparticle acoustophoresis.

Original languageEnglish (US)
Title of host publication20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016
PublisherChemical and Biological Microsystems Society
Pages1643-1644
Number of pages2
ISBN (Electronic)9780979806490
StatePublished - Jan 1 2016
Event20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016 - Dublin, Ireland
Duration: Oct 9 2016Oct 13 2016

Publication series

Name20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016

Other

Other20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016
CountryIreland
CityDublin
Period10/9/1610/13/16

Fingerprint

Acoustic streaming
Acoustic surface wave devices
Surface waves
Acoustic waves
Microchannels
Drag
Acoustics
Radiation
Substrates

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering

Cite this

Barnkob, R., Nama, N., Ren, L., Huang, T. J., Costanzo, F., & Kähler, C. J. (2016). Streaming direction and microparticle size effects in standing surface acoustic wave (SAW) devices. In 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016 (pp. 1643-1644). (20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016). Chemical and Biological Microsystems Society.
Barnkob, R. ; Nama, N. ; Ren, L. ; Huang, T. J. ; Costanzo, Francesco ; Kähler, C. J. / Streaming direction and microparticle size effects in standing surface acoustic wave (SAW) devices. 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016. Chemical and Biological Microsystems Society, 2016. pp. 1643-1644 (20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016).
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Barnkob, R, Nama, N, Ren, L, Huang, TJ, Costanzo, F & Kähler, CJ 2016, Streaming direction and microparticle size effects in standing surface acoustic wave (SAW) devices. in 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016. 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016, Chemical and Biological Microsystems Society, pp. 1643-1644, 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016, Dublin, Ireland, 10/9/16.

Streaming direction and microparticle size effects in standing surface acoustic wave (SAW) devices. / Barnkob, R.; Nama, N.; Ren, L.; Huang, T. J.; Costanzo, Francesco; Kähler, C. J.

20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016. Chemical and Biological Microsystems Society, 2016. p. 1643-1644 (20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016).

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

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Barnkob R, Nama N, Ren L, Huang TJ, Costanzo F, Kähler CJ. Streaming direction and microparticle size effects in standing surface acoustic wave (SAW) devices. In 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016. Chemical and Biological Microsystems Society. 2016. p. 1643-1644. (20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016).