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Computational Simulation and Fabrication of smooth Edged Passive Micromixers with Alternately varying diameter for Efficient Mixing

Publication Type : Journal Article

Thematic Areas : Medical Sciences, Biotech

Publisher : Microelectronic Engineering, Elsevier.

Source : Microelectronic Engineering, Elsevier, Volume 165, p.32-40 (2016)

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Keywords : Computational simulation, Comsol multiphysics, Cross sectional diameters, Electrochemical studies, Experimental evaluation, Fabrication, Flow of fluids, Microchannels, Microfluidic channel, Microfluidics, Micromixers, Mixers (machinery), Mixing, Numerical studies, photolithography

Campus : Amritapuri, Coimbatore

School : School of Biotechnology, School of Engineering

Center : Amrita Mind Brain Center, Biotechnology

Department : Sciences, biotechnology

Year : 2016

Abstract : To improve the efficiency of passive micromixers, microchannels of varying geometry have been widely studied. A highly efficient passive micromixer was developed by alternatively varying the cross-sectional diameter along the flow. Microfluidic channels of various geometries were designed and the fluid flow patterns were studied using COMSOL Multiphysics. The extent of mixing in the microchannels for the various designs were analyzed and the most efficient micromixer was further optimized for best mixing performance. The optimized design was fabricated using direct laser write lithography. The spin speed, exposure energy, baking temperature, baking and development time were observed to play an important role in fabrication. Experimental evaluation of the simulation results was carried out by injecting coloured solutions through the PDMS microchannels and by electrochemical studies.

Cite this Research Publication : A. Pradeep, J. Raveendran, Dr. Ramachandran T., Dr. Bipin G. Nair, and Dr. Satheesh Babu T. G., “Computational simulation and fabrication of smooth edged passive micromixers with alternately varying diameter for efficient mixing”, Microelectronic Engineering, vol. 165, pp. 32-40, 2016

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