Hagsäter S M, Jensen T Glasdam, Bruus H, Kutter J P
MIC-Department of Micro and Nanotechnology, Technical University of Denmark, DTU Bldg. 345 east, DK-2800, Kongens Lyngby, Denmark.
Lab Chip. 2007 Oct;7(10):1336-44. doi: 10.1039/b704864e. Epub 2007 Jul 18.
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.
我们表明，全图像微粒子图像测速分析与瞬态粒子运动图像相结合，是用于在兆赫兹范围内压电驱动下对微流体腔室中的声辐射力和声流进行实验研究的有力工具。在给定的实验微系统中，5微米大颗粒和1微米小颗粒的测量稳态运动可以根据声学本征模式或驻波超声来理解。相应的声波方程的数值解支持了这一解释。
