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Manipulation of magnetic particles by patterned arrays of magnetic spin-valve traps

Published

Author(s)

Elizabeth Mirowksi, John M. Moreland, Stephen E. Russek, Michael J. Donahue

Abstract

A novel magnetic for microfluidic manipulation of magnetic particles is discussed. The particles are confined by an array of magnetic spin valves with bistable ferromagnetic "ON" and antiferromagnetic "OFF" net magnetization states. The switchable fringing fields near the spin-valve traps can be used to selectively confine or release particles for transport or sorting. Spin-valve traps may be potentially used as magnetic molecular tweezers or adapted to a low-power magnetic random access memory (MRAM) switching architecture for massively parallel particle sorting applications.
Citation
Journal of Magnetism and Magnetic Materials
Volume
311

Keywords

magnetic traps, magnetic tweezers, microfluidics, single molecule, spin-valve arrays
Created December 20, 2006, Updated February 19, 2017