Active magnetoplasmonic split-ring/ring nanoantennas

Hua Yu Feng, Feng Luo, Raul Arenal, Luc Henrard, Fernando García, Gaspar Armelles, Alfonso Cebollada

Research output: Contribution to journalArticle

Abstract

Here we present a novel active system, which combines the plasmon resonance enhancement of the magneto-optical activity in magnetoplasmonic nanostructures and the strong electromagnetic field localization of split ring resonators. The structures consist of a gold split ring resonator placed on top of a gold nanoring in the section of which a Co nanodot is inserted. By placing the split ring gap on top of the nanodot, and continuously varying the split ring gap opening, we are able to tune and enhance the electromagnetic field intensity in the Co nanodot, as confirmed experimentally by EELS and numerically using DDA simulation methods. In this way we obtain structures with a magneto-optical activity, which is 3 times larger than that of equivalent magnetoplasmonic rings without a split ring on top. These enhanced performances are due to the better control of the positioning, dimensions, and shape of the different components of the system. Such improvements are achieved using hole-mask colloidal lithography technique combined with multiaxial evaporation of the different materials.

LanguageEnglish
Pages37-44
Number of pages8
JournalNanoscale
Volume9
Issue number1
DOIs
StatePublished - 7 Jan 2017

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Gold
Electromagnetic fields
Resonators
Digital differential analyzers
Nanorings
Electron energy loss spectroscopy
Lithography
Masks
Nanostructures
Evaporation
Nanoantennas
bis(p-chlorophenyl)acetic acid

Cite this

Feng, H. Y., Luo, F., Arenal, R., Henrard, L., García, F., Armelles, G., & Cebollada, A. (2017). Active magnetoplasmonic split-ring/ring nanoantennas. DOI: 10.1039/c6nr07864h
Feng, Hua Yu ; Luo, Feng ; Arenal, Raul ; Henrard, Luc ; García, Fernando ; Armelles, Gaspar ; Cebollada, Alfonso. / Active magnetoplasmonic split-ring/ring nanoantennas. In: Nanoscale. 2017 ; Vol. 9, No. 1. pp. 37-44
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Feng, HY, Luo, F, Arenal, R, Henrard, L, García, F, Armelles, G & Cebollada, A 2017, 'Active magnetoplasmonic split-ring/ring nanoantennas' Nanoscale, vol. 9, no. 1, pp. 37-44. DOI: 10.1039/c6nr07864h

Active magnetoplasmonic split-ring/ring nanoantennas. / Feng, Hua Yu; Luo, Feng; Arenal, Raul; Henrard, Luc; García, Fernando; Armelles, Gaspar; Cebollada, Alfonso.

In: Nanoscale, Vol. 9, No. 1, 07.01.2017, p. 37-44.

Research output: Contribution to journalArticle

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Feng HY, Luo F, Arenal R, Henrard L, García F, Armelles G et al. Active magnetoplasmonic split-ring/ring nanoantennas. Nanoscale. 2017 Jan 7;9(1):37-44. Available from, DOI: 10.1039/c6nr07864h