Acoustic impedance based separation of microspheres using travelling surface acoustic waves

Ghulam Destgeer, Byung Hang Ha, Jin Soo Park, Jin Ho Jung, Anas Alazzam, Hyung Jin Sung

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

1 Scopus citations

Abstract

We report on a novel microfluidic separation mechanism for continuous, label free and contactless segregation of polystyrene (PS) and polymethylmethacrylate (PMMA) microspheres based on their acoustic impedances using travelling surface acoustic waves (TSAWs). The separation mechanism is based on the differences in acoustic impedances of the two particle materials. We have provided a theoretical estimation of the acoustic radiation force (ARF) acting on the elastic microspheres to further corroborate the experimental results. The estimated ARF is used to unravel the reason behind unintuitive response of microspheres to the TSAWs where smaller particles are deflected more than the larger particles.

Original languageBritish English
Title of host publicationMicroTAS 2015 - 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences
Pages1014-1016
Number of pages3
ISBN (Electronic)9780979806483
StatePublished - 2015
Event19th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2015 - Gyeongju, Korea, Republic of
Duration: 25 Oct 201529 Oct 2015

Publication series

NameMicroTAS 2015 - 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences

Conference

Conference19th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2015
Country/TerritoryKorea, Republic of
CityGyeongju
Period25/10/1529/10/15

Keywords

  • Acoustic impedance
  • Acoustofluidics
  • Microfluidics
  • Particle separation
  • Surface acoustic waves

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