Open access
Datum
2017-05Typ
- Journal Article
Abstract
Localized surface plasmons are charge density oscillations confined to metallic nanoparticles. Excitation of localized surface plasmons by an electromagnetic field at an incident wavelength where resonance occurs results in a strong light scattering and an enhancement of the local electromagnetic fields. This paper is devoted to the mathematical modeling of plasmonic nanoparticles. Its aim is fourfold: (1) to mathematically define the notion of plasmonic resonance and to analyze the shift and broadening of the plasmon resonance with changes in size and shape of the nanoparticles; (2) to study the scattering and absorption enhancements by plasmon resonant nanoparticles and express them in terms of the polarization tensor of the nanoparticle; (3) to derive optimal bounds on the enhancement factors; (4) to show, by analyzing the imaginary part of the Green function, that one can achieve super-resolution and super-focusing using plasmonic nanoparticles. For simplicity, the Helmholtz equation is used to model electromagnetic wave propagation. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000128545Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
Archive for Rational Mechanics and AnalysisBand
Seiten / Artikelnummer
Verlag
SpringerOrganisationseinheit
09504 - Ammari, Habib / Ammari, Habib
Zugehörige Publikationen und Daten
Is new version of: http://hdl.handle.net/20.500.11850/111140
Anmerkungen
It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.