Nonlocal Effects in the Plasmons of Strongly Interacting Nanoparticles, Dimers, and Waveguides

By de Abajo, F. J. García. 2008

530 citations recorded by the source corpus.

Spatial nonlocality in the optical response of noble metals is shown to produce significant blue shift and near-field quenching of plasmons in nanoparticle dimers, nanoshells, and thin metal waveguides. Compared with a local description relying on the use of frequency-dependent dielectric functions, we predict resonance shifts as large as 10% and field-intensity reduction of an order of magnitude at interparticle distances or metal thicknesses below 2 A, although sizable effects are already observed for dimers separated by 2 nm. The calculation method (a combination of the specular-reflection model and a suitable nonlocal extension of measured local dielectric functions) is simple to implement and can be easily generalized to arbitrarily complex nanostructures.

Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/6625397e0bb4e122b97313dd16b9cfb5a687d7d0

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In Atomic and Molecular Physics, and Optics

In Biomedical Engineering

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Blueshift of the surface plasmon resonance in silver nanoparticles studied with EELS (2012, methodology): “[22] F.”
Optical excitations in electron microscopy (2009, methodology): “There are numerous experimental studies of EELS involving more complicated geometries, like Si tips (Reed et al., 1999), metallic particles supported by dielectric (Wang and Cowley, 1987a,d) or by metal (Wang and Cowley, 1987b,d) substrates, MgO wedges (Aizpurua et al., 1999; Garćıa de Abajo and Ai”