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Volume 191, 2016
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Template-assisted colloidal self-assembly of macroscopic magnetic metasurfaces

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Abstract

We demonstrate a template-assisted colloidal self-assembly approach for magnetic metasurfaces on macroscopic areas. The choice of anisotropic colloidal particle geometry, assembly pattern and metallic film is based on rational design criteria, taking advantage of mirror-charge effects for gold nanorods placed on gold film. Monodisperse gold nanorods prepared utilizing wet-chemistry are arranged with high precision on wrinkled templates to form linear array-type assemblies and subsequently transferred to a thin gold film. Due to the obtained particle-to-film distance of 1.1 nm, the plasmonic mode of the nanorod is able to couple efficiently with the supporting metallic film, giving rise to a magnetic mode in the visible spectrum (721 nm). Conventional UV-vis-NIR measurements in close correlation with electromagnetic simulations provide evidence for the presence of a magnetic resonance on the macroscopic area. The herein presented scalable lithography-free fabrication process paves the road towards colloidal functional metasurfaces with an optical response in the effective magnetic permeability.

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Publication details

The article was received on 12 Feb 2016, accepted on 22 Feb 2016 and first published on 22 Feb 2016


Article type: Paper
DOI: 10.1039/C6FD00013D
Citation: Faraday Discuss., 2016,191, 159-176
  • Open access: Creative Commons BY-NC license
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    Template-assisted colloidal self-assembly of macroscopic magnetic metasurfaces

    M. Mayer, M. Tebbe, C. Kuttner, M. J. Schnepf, T. A. F. König and A. Fery, Faraday Discuss., 2016, 191, 159
    DOI: 10.1039/C6FD00013D

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