Acoustic resonances in microfluidic chips: full-image micro-PIV experiments and numerical simulations.
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 microm and small 1 microm 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.
Hagsäter
S M
SM
MIC-Department of Micro and Nanotechnology, Technical University of Denmark, DTU Bldg. 345 east, DK-2800, Kongens Lyngby, Denmark.
Jensen
T Glasdam
TG
Bruus
H
H
Kutter
J P
JP