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Proceedings Paper

Study of the design of micromixer and inspection of mixing efficiency
Author(s): Ya-Hui Hu; Ming Chang
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Paper Abstract

Rapid mixing is essential in many of the micro-fluidic systems targeted for use in the testing of biochip analysis, drug delivery, and analysis or synthesis of blood, among others. A design of a passive micro-mixer is presented in this paper. The mixing is based on the vortex phenomenon of fluid stirring and diffusion. The size of the mixer chip is 10mm×10mm, with a width of the channel of 200μm and a depth of 50μm. This mixer allows fast mixing of small amounts of liquids. A mathematical model that uses gray level contrast to evaluate the mixing efficiency is also proposed. The measurement principle is based on the statistical concept via a quadratic weighting distribution. Experimental results show that the mixing efficiency is over 80% for mixing two liquids with the same polarization and roughly 90% for the mixing of two inks. Thus a new type of biochip can be easily implemented with this system for the application in biomedical diagnostic technology.

Paper Details

Date Published: 15 March 2004
PDF: 8 pages
Proc. SPIE 5261, Smart Medical and Biomedical Sensor Technology, (15 March 2004); doi: 10.1117/12.515191
Show Author Affiliations
Ya-Hui Hu, Chung Yung Christian Univ. (Taiwan)
Ming Chang, Chung Yung Christian Univ. (Taiwan)

Published in SPIE Proceedings Vol. 5261:
Smart Medical and Biomedical Sensor Technology
Brian M. Cullum, Editor(s)

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