Magnetically driven assembly of superparamagnetic colloidal particles

Benjamin B. Yellen; Gary Friedman; Alan D. Feinerman

doi:10.1117/12.478161

17 January 2003 Magnetically driven assembly of superparamagnetic colloidal particles

Benjamin B. Yellen, Gary Friedman, Alan D. Feinerman

Proceedings Volume 4982, Microfluidics, BioMEMS, and Medical Microsystems; (2003) https://doi.org/10.1117/12.478161
Event: Micromachining and Microfabrication, 2003, San Jose, CA, United States

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.

Citation Download Citation

Benjamin B. Yellen, Gary Friedman, and Alan D. Feinerman "Magnetically driven assembly of superparamagnetic colloidal particles", Proc. SPIE 4982, Microfluidics, BioMEMS, and Medical Microsystems, (17 January 2003); https://doi.org/10.1117/12.478161

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