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Article
Design of high-magnetic field gradient sources for controlling magnetically induced flow of ferrofluids in microfluidic systems
Journal of Applied Physics
  • W. He, Iowa State University
  • S. J. Lee, Iowa State University
  • David C. Jiles, Iowa State University
  • D. H. Schmidt, Iowa State University
  • Marc D. Porter, Iowa State University
  • Ruth Shinar, Iowa State University
Document Type
Article
Publication Date
5-15-2003
DOI
10.1063/1.1557361
Abstract

The use of miniature electromagnets for ferrofluid-actuated liquid dispensing into microfluidic channels has been investigated by numerical simulations using the finite element method and measurements of fluid displacement and flow rate. The simulations illustrate the effect of structural and geometrical parameters of single and paired solenoid coils on the magnetic force experienced by the ferrofluid. Dual solenoids were used for extended fluid displacement. Ferrofluid positioning and flow rates were controlled also by using a solenoid with an iron core. The experimental measurements of fluidflow in capillaries were used to validate the modeling calculations. The results can be used as a basis for the development of on-chip ferrofluid-based devices integrated with microfluidic architectures.

Comments

The following article is from Journal of Applied Physics 93 (2003): 7459 and may be found at http://dx.doi.org/10.1063/1.1557361.

Rights
Copyright 2003 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Copyright Owner
American Institute of Physics
Language
en
Date Available
2014-08-19
File Format
application/pdf
Citation Information
W. He, S. J. Lee, David C. Jiles, D. H. Schmidt, et al.. "Design of high-magnetic field gradient sources for controlling magnetically induced flow of ferrofluids in microfluidic systems" Journal of Applied Physics Vol. 93 Iss. 10 (2003) p. 7459 - 7461
Available at: http://works.bepress.com/david_jiles/86/