Title :

Investigation of Lattice Plasmon Modes in 2D Arrays of Au Nanoantennas

Author(s) :

Ferraro, Antonio [Auteur]
Djouda, Joseph Marae [Auteur]
Laboratoire de Mécanique Paris-Saclay [LMPS]
Laboratoire de mécanique et technologie [LMT]
Lio, Giuseppe Emanuele [Auteur]
Lévêque, Gaëtan [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Adam, Pierre-Michel [Auteur]
Lumière, nanomatériaux et nanotechnologies [L2n]
Umeton, Cesare Paolo [Auteur]
Maurer, Thomas [Auteur]
Lumière, nanomatériaux et nanotechnologies [L2n]
Caputo, Roberto [Auteur]
University of Electronic Science and Technology of China [Chengdu] [UESTC]

Journal title :

Crystals

Pages :

336

Publisher :

MDPI

Publication date :

2022-03

ISSN :

2073-4352

English keyword(s) :

plasmonic
nanoantenna
nanotechnology
metasurface

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

The coupling of gold nanoantennas (AuNAs) in the arrangement of monomers in bidimensional gratings is investigated both experimentally and numerically. The influence of edge diffraction, corresponding to the grazing ...
Show more >The coupling of gold nanoantennas (AuNAs) in the arrangement of monomers in bidimensional gratings is investigated both experimentally and numerically. The influence of edge diffraction, corresponding to the grazing propagation of specific diffracted orders, and the dependence of grating parameters on lattice plasmon modes are studied. It is shown that the grating pitch influences the spectral position of the Rayleigh wavelength related to the grazing diffraction in air and/or in glass. In order to investigate the effect of diffraction and its interplay with the Rayleigh wavelength, extinction measurements with different incidence angles are carried out. For incidence angles above θ=20∘, along with the excitation of quadrupolar and vertical modes, very narrow dips or sharp excitations are observed in the spectra. These ones strongly depend on the respective spectral position of Rayleigh anomaly and specific dipolar mode, on the propagation direction of the grazing diffraction, and on the considered plasmon mode. These features are explained in the light of numerical calculations obtained with Green’s tensor method. All the above different characteristics and couplings are of great practical interest, especially for a possible implementation in biosensor devices and for other technological applications spanning from precision medicine and life science to telecommunications and energy systems.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL