Premium
Modelling of the near‐field of metallic nanoparticle gratings: localized surface plasmon resonance and SERS applications
Author(s) -
GRIMAULT A.S.,
VIAL A.,
GRAND J.,
LAMY DE LA CHAPELLE M.
Publication year - 2008
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.2008.01923.x
Subject(s) - surface plasmon resonance , finite difference time domain method , raman scattering , materials science , surface plasmon , localized surface plasmon , plasmon , resonance (particle physics) , drude model , raman spectroscopy , optics , hyperboloid model , scattering , nanoparticle , molecular physics , optoelectronics , nanotechnology , physics , atomic physics , quantum mechanics , minkowski space
Summary We numerically study the influence of the shape of gold nanostructures on the spectral position of their localized surface plasmon resonance and on Surface Enhanced Raman Scattering efficiency. Calculations are performed using a Finite‐Difference Time‐Domain (FDTD) method, whose accuracy for dispersive media is enhanced through the use of a Drude‐Lorentz model. The relevance of this method is then pointed out by comparing the calculations with experimental data for both the plasmon resonance and the Raman signal enhancement. The influence of a thin layer of water is also investigated.