Acoustic resonances in microfluidic chips: full-image micro-PIV experiments and numerical simulations

Details Acoustic resonances in microfluidic chips: full-image micro-PIV experiments and numerical simulations Acoustic resonances in microfluidic chips: full-image micro-PIV experiments and numerical simulations

2007-04-10

arxiv.org/abs/0704.1314v1

Lab Chip 7, 1336--1344 (2007)

Physics

Fluid Dynamics

RevTex, 10 pages, 9 eps figures; NOTE first authors changed his name to S. Melker Hagsater in the published version

Scientific paper

10.1039/b704864e

We show that full-image micro-PIV analysis in combination with images of transient particle motion is a powerful tool for experimental studies of acoustic radiation forces and acoustic streaming in microfluidic chambers under piezo-actuation in the MHz range. The measured steady-state motion of both large 5 um and small 1 um particles can be understood in terms of the acoustic eigenmodes or standing ultra-sound waves in the given experimental microsystems. This interpretation is supported by numerical solutions of the corresponding acoustic wave equation.

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