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Development and Analytical Treatment of 3-D Passive Mixromixer for Enhanced Microfluidics Reactions

[+] Author Affiliations
Suresh Gosavi, Sukratu Barve

University of Pune, Pune, India

Aniket Tekawade

Birla Institute of Technology and Science, Pilani, India

Dhananjay Bodas

Agharkar Research Institute, Pune, India

Laurent Robert, Chantal Khan-Malek

FEMTO-ST/LPMO, CNRS UMR 6174, Besançon, France

Paper No. ICNMM2011-58263, pp. 195-201; 7 pages
doi:10.1115/ICNMM2011-58263
From:
  • ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels
  • ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 2
  • Edmonton, Alberta, Canada, June 19–22, 2011
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4464-9
  • Copyright © 2011 by ASME

abstract

With fast development of microfluidic systems, micro-mixing becomes a very important issue. Various attempts have been made to develop passive and active micromixers, wherein the mixing efficiency is mainly dependent on the diffusion coefficient and diffusion mechanism. This paper reports modeling and fabrication of a 3D micromixer based on the principle of sequential lamination for efficient mixing. Simulation of the square tube geometry with varying inlet velocity was performed. The improvement in the mixing efficiency is attributed to the increase in the contact surface between the different fluids decreasing the diffusion path in order to improve the molecular diffusion. The design approach in the present case is also supported by analytical treatment which indicates superiority of 2D transverse flows while designing a micromixer. The optimized parameters from CFD simulation were used for fabrication of the micromixer by standard photolithographic and soft lithographic techniques.

Copyright © 2011 by ASME
Topics: Microfluidics

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