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Proceedings Paper

Magnetically driven assembly of superparamagnetic colloidal particles
Author(s): Benjamin B. Yellen; Gary Friedman; Alan D. Feinerman
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Paper Abstract

Thin ferromagnetic film patterned into isolated islands is used to direct assembly of superparamagnetic colloidal particles into two-dimensional arrays. Ferromagnetic islands positioned under a template of micro-wells are shown to promote highly regular 2D arrays, while external uniform magnetic field is used to bias the particles to attract or repel from the exposed end of the ferromagnetic islands. A theoretical analysis on the interactions between superparamagnetic colloidal particles with the template and external uniform magnetic fields is also presented.

Paper Details

Date Published: 17 January 2003
PDF: 8 pages
Proc. SPIE 4982, Microfluidics, BioMEMS, and Medical Microsystems, (17 January 2003); doi: 10.1117/12.478161
Show Author Affiliations
Benjamin B. Yellen, Drexel Univ. (United States)
Gary Friedman, Drexel Univ. (United States)
Alan D. Feinerman, Univ. of Illinois/Chicago (United States)

Published in SPIE Proceedings Vol. 4982:
Microfluidics, BioMEMS, and Medical Microsystems
Holger Becker; Peter Woias, Editor(s)

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