| Info. | Vol.7 - No.4 (2013.12.20) |
|---|---|
| Title | Passive micromixer using by convection and surface tension effects with air-liquid interface |
| Authors | Jongil Ju1 & Jay Warrick2,3 |
| Institutions | 1Department of Biomedical Engineering, College of Health Science, Korea University, Seoul 136-703, Korea 2Wisconsin Institute for Medical Research, University of Wisconsin-Madison, Madison, WI, 53705 USA 3Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, 53715 USA |
| Abstract | This article describes a passive micromixer that utilizes an air-liquid interface and surface tension effects to enhance fluid mixing via convection and Marangoni effects. Performance of the microfluidic component is tested within a passive-pumpingbased device that consists of three microchannels connected in succession using passive micro-mixers. Mixing was quantified at 5 key points along the length of the device using microscope images of patterned streams of Alexa 488 fluorescent-dyed water and pure DI water flowing through the device. The passive micro-mixer mixed fluid 15 20 times more effectively than diffusion between laminar flow streams alone and is a novel micro-mixer embodiment that provides an additional strategy for removing external components from microscale devices for simpler, autonomous operation. |
| Keyword | Passive micromixer, Surface tension, Convection, Marangoni effect, Autonomous operation |
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