15 May 2007 Ferromagnetic 3-D impellor-shaped micro-stirrer bar for micromixing
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We report the development of a high efficiency magnetic microfluidic mixer based on a novel 3D impellor-shaped ferromagnetic micro-stirrer bar. The 3D impellor-shaped micro-stirrer bar with 31.6º inclined angle is fabricated using titled (55º) SU-8 exposure technique. The 3-D inclined micro-stirrer bar causes 3-D perturbation of fluids resulting in rapid mixing in microscale. When compared with a vertical straight sidewall micro-stirrer bar, approximately 20% of mixing efficiency enhancement is achieved.
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Arun K. Nallani, Arun K. Nallani, Jeong-Bong Lee, Jeong-Bong Lee, } "Ferromagnetic 3-D impellor-shaped micro-stirrer bar for micromixing", Proc. SPIE 6589, Smart Sensors, Actuators, and MEMS III, 65890C (15 May 2007); doi: 10.1117/12.722098; https://doi.org/10.1117/12.722098

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