Arraying nonmagnetic colloids by magnetic nanoparticle assemblers

Journal Article

We review our recent work on the manipulation and assembly of nonmagnetic colloidal materials above magnetically programmable surface templates. The nonmagnetic materials are manipulated by a fluid dispersion of magnetic nanoparticles, known as ferrofluid. Particle motion is guided by a program of magnetic information stored in a substrate in the form of a lithographically patterned template of micromagnets. We show how dynamic control over the motion of nonmagnetic particles can be accomplished by applying rotating external magnetic field. This unexpectedly large degree of control over particle motion can be used to manipulate large ensembles of particles in parallel, potentially with local control over particle trajectory. © 2006 IEEE.

Full Text

Duke Authors

Cited Authors

  • Yellen, BB; Erb, RM; Halverson, DS; Hovorka, O; Friedman, G

Published Date

  • 2006

Published In

Volume / Issue

  • 42 / 10

Start / End Page

  • 3548 - 3553

International Standard Serial Number (ISSN)

  • 0018-9464

Digital Object Identifier (DOI)

  • 10.1109/TMAG.2006.879623