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17 Nov 2008

Volume 93, Issue 20, Articles (20xxxx)

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Appl. Phys. Lett. 93, 201101 (2008); http://dx.doi.org/10.1063/1.3025818 (3 pages)

W. Dai and C. M. Soukoulis
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Controlled transport of magnetic particles using soft magnetic patterns

Richard S. Conroy, Gary Zabow, John Moreland, and Alan P. Koretsky

Appl. Phys. Lett. 93, 203901 (2008); http://dx.doi.org/10.1063/1.3009197 (3 pages) | Cited 12 times

Online Publication Date: 20 November 2008

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Inspired by magnetic bubble memory technology, we demonstrate the temporal and spatial manipulation of superparamagnetic beads guided by soft magnetic patterns in a rotating magnetic field. Soft magnetic structures allow complex and repetitive tasks to be performed. As a demonstration, we show cyclic capture and release of antibodies from different microfluidic streams.
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75.70.Kw Domain structure (including magnetic bubbles and vortices)
75.50.Tt Fine-particle systems; nanocrystalline materials
75.25.-j Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)
75.20.-g Diamagnetism, paramagnetism, and superparamagnetism
75.47.Pq Other materials
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