Investigation into the Effect of Acoustic Radiation Force and Acoustic Streaming on Particle Patterning in Acoustic Standing Wave Fields

Shilei Liu, Yanye Yang, Zhengyang Ni, Xiasheng Guo, Linjiao Luo, Juan Tu, Dong Zhang, Jie Zhang

Research output: Contribution to journalArticle (Academic Journal)peer-review

18 Citations (Scopus)
309 Downloads (Pure)

Abstract

Acoustic standing waves have been widely used in trapping, patterning, and manipulating particles, whereas one barrier remains: the lack of understanding of force conditions on particles which mainly include acoustic radiation force (ARF) and acoustic streaming (AS). In this paper, force conditions on micrometer size polystyrene microspheres in acoustic standing wave fields were investigated. The COMSOL® Mutiphysics particle tracing module was used to numerically simulate force conditions on various particles as a function of time. The velocity of particle movement was experimentally measured using particle imaging velocimetry (PIV). Through experimental and numerical simulation, the functions of ARF and AS in trapping and patterning were analyzed. It is shown that ARF is dominant in trapping and patterning large particles while the impact of AS increases rapidly with decreasing particle size. The combination of using both ARF and AS for medium size particles can obtain different patterns with only using ARF. Findings of the present study will aid the design of acoustic-driven microfluidic devices to increase the diversity of particle patterning.
Original languageEnglish
Article number1664
Number of pages11
JournalSensors
Volume17
Issue number7
Early online date19 Jul 2017
DOIs
Publication statusPublished - Jul 2017

Bibliographical note

Special Issue: Microfluidic Sensors and Control Devices

Keywords

  • acoustic radiation force
  • acoustic streaming
  • particle image velocimetry
  • particles patterning
  • acoustic particles manipulation

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