Acoustic resonances in microfluidic chips: full-image micro-PIV experiments and numerical simulations
- 18 July 2007
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Lab on a Chip
- Vol. 7 (10) , 1336-1344
- https://doi.org/10.1039/b704864e
Abstract
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 µm and small 1 µm 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.Keywords
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