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- W187721146 abstract "The oscillation of the surface charge density in metallic nanoparticles, commonly named localized surface plasmons (LSPs), is a result of the collective oscillation of the conduction electrons under the constraints imposed by the physical boundaries of the nanoparticle geometry. In this chapter, a review on the basic properties of LSPs, acting as effective optical nanoantennas, is presented. The optical response in the simplest nanoparticle, a metallic sphere, serves as a guide to understand concepts such as dipolar approximation, multipolar modes, effects of retardation, and shape-effects in the optical response of metallic nanoparticles. Special emphasis is paid to the coupling of metallic nanostructures as a standard approach to design optical nanoantennas, where aspects such as the tuning of the spectral response and the magnitude of the field enhancement are described in simple terms. The role of metallic nanostructures as optical antennas assisting in field-enhanced spectroscopy is also detailed in the context of surface-enhanced Raman scattering and surface-enhanced infrared absorption (SEIRA). Other spectral and sensing techniques are briefly discussed for completeness." @default.
- W187721146 created "2016-06-24" @default.
- W187721146 creator A5019663727 @default.
- W187721146 creator A5085159901 @default.
- W187721146 date "2012-01-01" @default.
- W187721146 modified "2023-10-18" @default.
- W187721146 title "Localized Surface Plasmons: Basics and Applications in Field-Enhanced Spectroscopy" @default.
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