Dynamics of superparamagnetic microbead transport along magnetic nanotracks by magnetic domain walls

Author(s)
Rapoport, Elizabeth Ashera; Beach, Geoffrey Stephen
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Abstract
The dynamics of fluid-borne superparamagnetic bead transport by field-driven domain walls in submicrometer ferromagnetic tracks is studied experimentally together with numerical and analytical modeling. Experiments show that nanotrack-guided domain walls can propel individual trapped beads through an aqueous medium at speeds approaching 1000 μm/s, 10 to 100 times faster than through any previously demonstrated mechanism.
Date issued
2012-02
URI
http://hdl.handle.net/1721.1/79578
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Rapoport, Elizabeth, and Geoffrey S. D. Beach. Dynamics of Superparamagnetic Microbead Transport Along Magnetic Nanotracks by Magnetic Domain Walls. Applied Physics Letters 100, no. 8 (2012): 082401.
Version: Final published version
ISSN
00036951
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