Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling

We revisit plasmon modes in nanoparticle dimers with conductive or insulating junction resulting in conductive or capacitive coupling. In our study, which combines electron energy loss spectroscopy, optical spectroscopy, and numerical simulations, we show the coexistence of strongly and weakly hybri...

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Main Authors:	Křápek Vlastimil, Konečná Andrea, Horák Michal, Ligmajer Filip, Stöger-Pollach Michael, Hrtoň Martin, Babocký Jiří, Šikola Tomáš
Format:	Article
Language:	English
Published:	De Gruyter 2019-12-01
Series:	Nanophotonics
Subjects:	plasmonics localised surface plasmons electron energy loss spectroscopy babinet’s principle hot spot
Online Access:	https://doi.org/10.1515/nanoph-2019-0326

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spelling	doaj-315d2d6dcedd463682a79558199004a42021-09-06T19:20:33ZengDe GruyterNanophotonics2192-86142019-12-019362363210.1515/nanoph-2019-0326nanoph-2019-0326Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive couplingKřápek Vlastimil0Konečná Andrea1Horák Michal2Ligmajer Filip3Stöger-Pollach Michael4Hrtoň Martin5Babocký Jiří6Šikola Tomáš7Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech RepublicTheory of Nanophotonics, Materials Physics Center CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, SpainCentral European Institute of Technology, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech RepublicCentral European Institute of Technology, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech RepublicUniversity Service Centre for Transmission Electron Microscopy, Vienna University of Technology, Wiedner Hauptstraße 8-10, A-1040 Wien, AustriaCentral European Institute of Technology, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech RepublicCentral European Institute of Technology, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech RepublicCentral European Institute of Technology, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech RepublicWe revisit plasmon modes in nanoparticle dimers with conductive or insulating junction resulting in conductive or capacitive coupling. In our study, which combines electron energy loss spectroscopy, optical spectroscopy, and numerical simulations, we show the coexistence of strongly and weakly hybridised modes. While the properties of the former ones strongly depend on the nature of the junction, the properties of the latter ones are nearly unaffected. This opens up a prospect for independent engineering of individual plasmon modes in a single plasmonic antenna. In addition, we show that Babinet’s principle allows to engineer the near field of plasmon modes independent of their energy. Finally, we demonstrate that combined electron energy loss imaging of a plasmonic antenna and its Babinet-complementary counterpart allows to reconstruct the distribution of both electric and magnetic near fields of localised plasmon resonances supported by the antenna, as well as charge and current antinodes of related charge oscillations.https://doi.org/10.1515/nanoph-2019-0326plasmonicslocalised surface plasmonselectron energy loss spectroscopybabinet’s principlehot spot
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Křápek Vlastimil Konečná Andrea Horák Michal Ligmajer Filip Stöger-Pollach Michael Hrtoň Martin Babocký Jiří Šikola Tomáš
spellingShingle	Křápek Vlastimil Konečná Andrea Horák Michal Ligmajer Filip Stöger-Pollach Michael Hrtoň Martin Babocký Jiří Šikola Tomáš Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling Nanophotonics plasmonics localised surface plasmons electron energy loss spectroscopy babinet’s principle hot spot
author_facet	Křápek Vlastimil Konečná Andrea Horák Michal Ligmajer Filip Stöger-Pollach Michael Hrtoň Martin Babocký Jiří Šikola Tomáš
author_sort	Křápek Vlastimil
title	Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling
title_short	Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling
title_full	Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling
title_fullStr	Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling
title_full_unstemmed	Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling
title_sort	independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling
publisher	De Gruyter
series	Nanophotonics
issn	2192-8614
publishDate	2019-12-01
description	We revisit plasmon modes in nanoparticle dimers with conductive or insulating junction resulting in conductive or capacitive coupling. In our study, which combines electron energy loss spectroscopy, optical spectroscopy, and numerical simulations, we show the coexistence of strongly and weakly hybridised modes. While the properties of the former ones strongly depend on the nature of the junction, the properties of the latter ones are nearly unaffected. This opens up a prospect for independent engineering of individual plasmon modes in a single plasmonic antenna. In addition, we show that Babinet’s principle allows to engineer the near field of plasmon modes independent of their energy. Finally, we demonstrate that combined electron energy loss imaging of a plasmonic antenna and its Babinet-complementary counterpart allows to reconstruct the distribution of both electric and magnetic near fields of localised plasmon resonances supported by the antenna, as well as charge and current antinodes of related charge oscillations.
topic	plasmonics localised surface plasmons electron energy loss spectroscopy babinet’s principle hot spot
url	https://doi.org/10.1515/nanoph-2019-0326
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Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling

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