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Separation of Magnetic Beads in a Microfluidic Device: Modeling and Experimentation

[+] Author Affiliations
Scott S. H. Tsai

Harvard University, Cambridge, MA

Jason S. Wexler, Howard A. Stone

Princeton University, Princeton, NJ

Ian M. Griffiths

University of Oxford, Oxford, UK

Paper No. IMECE2011-62402, pp. 615-616; 2 pages
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5492-1
  • Copyright © 2011 by ASME


We describe a microfluidic system that uses a magnetic field to deflect paramagnetic beads in the direction normal to the flow. Through modeling and experimentation, we study this system to separate beads by their magnetic properties and size. We also use a similar system to move the beads from one fluid stream to an adjacent miscible stream.

Copyright © 2011 by ASME



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