Journal
PHYSICAL REVIEW B
Volume 83, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.075426
Keywords
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Funding
- NTH-fondet
- U.S. National Science Foundation [CHE-0533162]
- Research Council of Norway
- NTNU
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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 quasistatic 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.
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