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Plasmonics of multifaceted metallic nanoparticles, field enhancement, and TERS
Author(s) -
Noguez Cecilia,
Villagómez Carlos J.,
González Ana L.
Publication year - 2015
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201350416
Subject(s) - plasmon , raman spectroscopy , nanoparticle , materials science , surface plasmon , surface enhanced raman spectroscopy , nanoscopic scale , nanotechnology , localized surface plasmon , spectroscopy , electromagnetic field , field (mathematics) , surface plasmon resonance , plasmonic nanoparticles , optoelectronics , raman scattering , optics , physics , mathematics , quantum mechanics , pure mathematics
Metal nanoparticles (NPs) exhibit remarkable physical and chemical properties that are morphology dependent. Particular interest has been paid to the optical response of NPs because their surface plasmon excitations strongly couple with external light. At the nanoscale, this physical property translates to new phenomena because these surface plasmon resonances are localized and consequently they enhance the near electromagnetic field. The latter can be controlled for increasing significantly the sensitivity of optical spectroscopies. In this feature article, we discuss surface plasmons in metal NPs, their localization, the electromagnetic field enhancement of such plasmons, and their application in the so‐called tip‐enhanced Raman spectroscopy (TERS). Tip‐enhanced Raman spectroscopy model using plasmonics.