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Micro-Particle Image Velocimetry for imaging flows in passive microfluidic mixers

Witkowski D., Kubicki W., Dziuban J. A., Jašíková D., Karczemska A.

Metrology and Measurement Systems

2018

Vol. 25, nr 3

441--450

The micro-Particle Image Velocimetry (micro-PIV) was used to measure flow velocities in micro-channels in two passive micromixers: a microfluidic Venturi mixer and a microfluidic spiral mixer, both preceded by standard “Y” micromixers. The micro-devices were made of borosilicate glass, with micro-engineering techniques dedicated to micro-PIV measurements. The obtained velocity profiles show differences in the flow structure in both cases. The micro-PIV enables understanding the micro-flow phenomena and can help to increase reproducibility of micromixers in mass production.