Communication

Magnetically Driven Janus Micro-Ellipsoids Realized via Asymmetric Gathering of the Magnetic Charge

  1. Oriol Güell,
  2. Francesc Sagués,
  3. Pietro Tierno*

Article first published online: 8 JUL 2011

DOI: 10.1002/adma.201100902

Issue

Advanced Materials

Advanced Materials

Volume 23, Issue 32, pages 3674–3679, August 23, 2011

Additional Information

How to Cite

Güell, O., Sagués, F. and Tierno, P. (2011), Magnetically Driven Janus Micro-Ellipsoids Realized via Asymmetric Gathering of the Magnetic Charge. Adv. Mater., 23: 3674–3679. doi: 10.1002/adma.201100902

Author Information

  1. Department of Physical Chemistry, University of Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain

*Department of Physical Chemistry, University of Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.

Publication History

  1. Issue published online: 12 AUG 2011
  2. Article first published online: 8 JUL 2011
  3. Manuscript Revised: 17 MAY 2011
  4. Manuscript Received: 9 MAR 2011

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A simple and general method to realize Janus paramagnetic micro-ellipsoids is demonstrated. We elongate liquefied spherical paramagnetic particles embedded in a thermoplastic thin film upon application of a mechanical stress and gather the magnetic doping of the particles by using an external high magnetic field gradient. The asymmetric location of the nanoscale superparamagnetic grains inside the anisotropic particles is confirmed by TEM, and by following the particle dynamics under a rotating magnetic field.

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