Substrate influence on the plasmonic response of clusters of spherical nanoparticles
arXiv:1011.3399 · doi:10.1103/PhysRevB.83.075426
Abstract
The plasmonic response of nanoparticles is exploited in many subfields of science and engineering to enhance optical signals associated with probes of nanoscale and subnanoscale entities. We develop a numerical algorithm based on previous theoretical work that addresses the influence of a substrate on the plasmonic response of collections of nanoparticles of spherical shape. Our method is a real space approach within the quasi-static limit that can be applied to a wide range of structures. We illustrate the role of the substrate through numerical calculations that explore single nanospheres and nanosphere dimers fabricated from either a Drude model metal or from silver on dielectric substrates, and from dielectric spheres on silver substrates.
12 pages, 13 figures
Cited by in corpus (5)
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- Light scattering from coupled plasmonic nanospheres on a substrate