Faraday rotation in magnetic colloidal photonic crystals

Wim Libaers, Branko Kolaric, Renaud A L Vallée, John E. Wong, Jelle Wouters, Ventsislav K. Valev, Thierry Verbiest, Koen Clays

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Faraday rotation for magnetic field sensing can find applications in satellite altitude monitoring. Enhancing and tuning Faraday rotation is demonstrated in hybrid magnetic photonic crystals, based on an independent nanoscale engineering of two different materials (silica and iron oxide) at different length scales (< 20 and > 200 nm). An engineering approach towards combined photonic band gap properties and magnetic functionalities, based on independent nanoscale engineering of two different materials at different length scales, is conceptually presented, backed by simulations, and experimentally confirmed. Large (> 200 nm) monodisperse nanospheres of transparent silica self-assemble into a photonic crystal with a visible band gap, which is retained upon infiltration of small (< 20 nm) nanoparticles of magnetic iron oxide. Enhancing and tuning Faraday rotation in photonic crystals is demonstrated.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7467
DOIs
Publication statusPublished - 19 Nov 2009
EventNanophotonics and Macrophotonics for Space Environments III - San Diego, CA, UK United Kingdom
Duration: 3 Aug 20094 Aug 2009

Conference

ConferenceNanophotonics and Macrophotonics for Space Environments III
CountryUK United Kingdom
CitySan Diego, CA
Period3/08/094/08/09

Keywords

  • Faraday rotation
  • Maghemite
  • Magnetic colloids
  • Photonic crystals
  • Superparamagnetic

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    Libaers, W., Kolaric, B., Vallée, R. A. L., Wong, J. E., Wouters, J., Valev, V. K., Verbiest, T., & Clays, K. (2009). Faraday rotation in magnetic colloidal photonic crystals. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7467). [74670C] https://doi.org/10.1117/12.824515