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Surface Lattice Resonances in Self‐Templated Plasmonic Honeycomb and Moiré Lattices
Author(s) -
Volk Kirsten,
Honold Tobias,
Feller Déborah,
Karg Matthias
Publication year - 2021
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.202100317
Subject(s) - materials science , plasmon , monolayer , laser linewidth , condensed matter physics , lattice (music) , self assembly , surface plasmon , nanoparticle , localized surface plasmon , molecular physics , metamaterial , nanotechnology , optics , optoelectronics , physics , laser , acoustics
Surface lattice resonances appear in periodic plasmonic nanoparticle arrays due to the hybridization of plasmonic and photonic modes. Compared to localized surface plasmon resonances of single particles, these coupled modes feature reduced linewidth, angle‐dependent dispersion, and long‐range collectivity. Here, the optical response of self‐assembled plasmonic monolayers of periodically arranged gold and silver nanoparticles is studied. In comparison to already established hexagonal lattices, self‐templated honeycomb and Moiré type lattices as well as their binary counterparts that include silver and gold nanoparticles in the same monolayer are looked at. All periodic arrays feature macroscopic dimensions (cm‐scale) and support surface lattice resonances as evidenced from classical extinction measurements. The experimental findings are supported by results from finite difference time domain simulations. Variation of the plasmonic material, the lattice spacing, and geometry enables spectral tunability of the optical response of the lattices.