Passive micromixers with dual helical channels

Keyin Liu; Qing Yang; Feng Chen; Yulong Zhao; Xiangwei Meng; Chao Shan; Yanyang Li

doi:10.1117/12.2083272

19 February 2015 Passive micromixers with dual helical channels

Keyin Liu, Qing Yang, Feng Chen, Yulong Zhao, Xiangwei Meng, Chao Shan, Yanyang Li

Proceedings Volume 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014); 94493S (2015) https://doi.org/10.1117/12.2083272
Event: The International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference (icPOE 2014), 2014, Xi'an, China

Abstract

In this study, a three-dimensional (3D) micromixer with cross-linked double helical microchannels is studied to achieve rapid mixing of fluids at low Reynolds numbers (Re). The 3D micromixer takes full advantages of the chaotic advection model with helical microchannels; meanwhile, the proposed crossing structure of double helical microchannels enables two flow patterns of repelling flow and straight flow in the fluids to promote the agitation effect. The complex 3D micromixer is realized by an improved femtosecond laser wet etching (FLWE) technology embedded in fused silica. The mixing results show that cross-linked double helical microchannels can achieve excellent mixing within 3 cycles (300 μm) over a wide range of low Re (1.5×10^-3~600), which compare well with the conventional passive micromixers. This highly-effective micromixer is hoped to contribute to the integration of microfluidic systems.

Citation Download Citation

Keyin Liu, Qing Yang, Feng Chen, Yulong Zhao, Xiangwei Meng, Chao Shan, and Yanyang Li "Passive micromixers with dual helical channels", Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94493S (19 February 2015); https://doi.org/10.1117/12.2083272

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