Long-range transport of magnetic microbeads using simple planar coils placed in a uniform magnetostatic field

Rida, A.; Fernandez, V.; Gijs, M. A. M.
September 2003
Applied Physics Letters;9/22/2003, Vol. 83 Issue 12, p2396
Academic Journal
We propose an approach for magnetic microbead transport in microfluidic channels over long-range distances using an array of simple planar coils. The latter are placed in a uniform static magnetic field, the role of which is to impose a permanent magnetic moment to the microbeads. The very small magnetic field gradient of a simple planar coil is then sufficient to displace the microbeads. The long-range displacement is assured by arranging adjacent coils in the array with spatial overlap in a three-phase actuation scheme. © 2003 American Institute of Physics.


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