High-speed micro-PIV measurements of transient flow in microfluidic devices
High-speed micro-PIV measurements of transient flow in microfluidic devices
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DOI：
10.1088/0957-0233/15/10/003
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发表时间：
2004-08
影响因子：
2.4
通讯作者：
K. Shinohara;Y. Sugii;Arata Aota;A. Hibara;M. Tokeshi;T. Kitamori;K. Okamoto
中科院分区：
文献类型：
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作者：
K. Shinohara;Y. Sugii;Arata Aota;A. Hibara;M. Tokeshi;T. Kitamori;K. Okamoto
本文报道了一种新的微分辨粒子图像测速技术。为了研究微流控装置中的瞬态现象，结合高速摄像机和连续波（CW）激光器，发展了一种高速微型PIV技术。该技术被应用到一个微小的逆流流动，由水和乙酸丁酯。在500 µs的时间分辨率和2.2 × 2.2 µm2的空间分辨率下，对微逆流流动中水的速度场进行了可视化。利用显微PIV技术，清晰地捕捉到了荧光粒子在水-醋酸丁酯界面附近的涡旋状运动。
This paper reports a new technique of micro-resolution particle image velocimetry (PIV). To investigate transient phenomena in a microfluidic device, a high-speed micro-PIV technique was developed by combining a high-speed camera and a continuous wave (CW) laser. The technique was applied to a micro counter-current flow, consisting of water and butyl acetate. The velocity fields of water in the micro counter-current flow were visualized for a time resolution of 500 µs and a spatial resolution of 2.2 × 2.2 µm2. Using the micro-PIV technique, the vortex-like motions of fluorescent particles around the water–butyl acetate interface were captured clearly.