Shear horizontal surface acoustic wave induced microfluidic flow

D. S. Brodie, Yong Qing Fu, Yifan Li, M. Alghane, Robert Reuben, Anthony Walton

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

In this letter, we demonstrate that surface acoustic waves(SAWs) excited on 36°Y-X LiTaO3 have both Rayleigh and shear horizontal components, which can result in different acoustic streaming patterns in micro-droplets. The shear horizontal surface acoustic wave streaming pattern exhibits a quasi-stable counterflow in the SAW propagation direction with velocities of up to 16 mm/s, with minimal damping observed within the droplets. A pumping function was realized at a threshold power of 30 dBm with a large rotation vector on hydrophobically treated devices.
Original languageEnglish
Pages (from-to)153704
JournalApplied Physics Letters
Volume99
Issue number15
DOIs
Publication statusPublished - Oct 2011

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