Magnetic and Electric Resonances in Particle-to-Film-Coupled Functional Nanostructures

Brasse Y, Mueller MB, Karg M, Kuttner C, Koenig TAF, Fery A (2018)

Publication Type: Journal article

Publication year: 2018

Journal

ACS Applied Materials and Interfaces American Chemical Society

Book Volume: 10

Pages Range: 3133-3141

Journal Issue: 3

DOI: 10.1021/acsami.7b16941

Abstract

We investigate the plasmonic coupling of metallic nanoparticles with continuous metal films by studying the effect of the particle-to-film distance, cavity geometry, and particle size. To efficiently screen these parameters, we fabricated a particle-to-film-coupled functional nanostructure for which the particle size and distance vary. We use gold-core/poly(N-isopropylacrylamide)-shell nanoparticles to self-assemble a monolayer of well-separated plasmonic particles, introduce a gradient in the nanoparticle size by an overgrowth process, and finally add a coupling metal film by evaporation. These assemblies are characterized using surface probing and optical methods to show localized magnetic and electric field enhancement. The results are in agreement with finite-difference time-domain modeling methods and calculations of the effective permeability and permittivity. Finally, we provide a proof of concept for dynamic tuning of the cavity size by swelling of the hydrogel layer. Thus, the tunability of the coupled resonance and the macroscopic self-assembly technique provides access to a cost-efficient library for magnetic and electric resonances.

Involved external institutions

Leibniz-Institut für Polymerforschung Dresden e. V. DE Germany (DE) Universität Bayreuth DE Germany (DE) Heinrich-Heine-Universität Düsseldorf DE Germany (DE)

How to cite

APA:

Brasse, Y., Mueller, M.B., Karg, M., Kuttner, C., Koenig, T.A.F., & Fery, A. (2018). Magnetic and Electric Resonances in Particle-to-Film-Coupled Functional Nanostructures. ACS Applied Materials and Interfaces, 10(3), 3133-3141. https://doi.org/10.1021/acsami.7b16941

MLA:

Brasse, Yannic, et al. "Magnetic and Electric Resonances in Particle-to-Film-Coupled Functional Nanostructures." ACS Applied Materials and Interfaces 10.3 (2018): 3133-3141.

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