Particles and nanovoids for plasmonics

This article reviews and compares the optical properties of metallic nanoparticles and nanovoids, which have received great attention due to their ability to generate and control plasmon resonances. These systems are capable of concentrating and manipulating the fields at nanometer scale, being very attractive as building blocks for emerging applications. Metal particles and nanovoids present different plasmonics modes, strongly dependent on the size, shape and nature of the metal and dielectric. Specific geometrical features, as the presence of rims, make the nanovoids very promising structures to design exotic band spectra because of the coupling between different resonant modes. (C) 2021 Published by Elsevier B.V.

Automated summary

This article reviews and compares the optical properties of metallic nanoparticles and nanovoids, which are capable of generating and controlling plasmon resonances. These systems can concentrate and manipulate fields at the nanometer scale, making them attractive building blocks for emerging applications. Metal particles and nanovoids exhibit different plasmonic modes, dependent on factors such as size, shape, and material properties. Specific geometrical features, like the presence of rims in nanovoids, make them promising structures for designing exotic band spectra due to the coupling between different resonant modes.