Volume 191, 2016
From the journal:

Faraday Discussions

Template-assisted colloidal self-assembly of macroscopic magnetic metasurfaces†

Martin Mayer,ac   Moritz Tebbe,b   Christian Kuttner,ac   Max J. Schnepf,a   Tobias A. F. König*acd  and  Andreas Fery*ace  

* Corresponding authors

a Leibniz-Institut für Polymerforschung Dresden e.V., Institute of Physical Chemistry and Polymer Physics, Hohe Str. 6, 01069 Dresden, Germany
E-mail: koenig@ipfdd.de, fery@ipfdd.de

b Department of Physical Chemistry II, University of Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany

c Cluster of Excellence Centre for Advancing Electronics Dresden (CFAED), Technische Universität Dresden, 01062 Dresden, Germany

d Technische Universität Dresden, Fakultät Mathematik und Naturwissenschaften, 01062 Dresden, Germany

e Department of Physical Chemistry of Polymeric Materials, Technische Universität Dresden, Hohe Str. 6, 01069 Dresden, Germany

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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DOI
https://doi.org/10.1039/C6FD00013D
Article type
Paper
Submitted
12 Feb 2016
Accepted
22 Feb 2016
First published
22 Feb 2016
This article is Open Access
Creative Commons BY-NC license

Faraday Discuss., 2016,191, 159-176

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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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