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Modelling of the near-field of metallic nanoparticle gratings: localized surface plasmon resonance and SERS applications

Abstract : 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.
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https://hal.archives-ouvertes.fr/hal-00416081
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Submitted on : Friday, September 11, 2009 - 6:21:23 PM
Last modification on : Wednesday, December 15, 2021 - 9:56:49 AM

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Anne-Sophie Grimault, Alexandre Vial, J. Grand, Marc Lamy de la Chapelle. Modelling of the near-field of metallic nanoparticle gratings: localized surface plasmon resonance and SERS applications. JOURNAL OF MICROSCOPY-OXFORD, 2008, 229 (3), pp.428-432. ⟨10.1111/j.1365-2818.2008.01923.x⟩. ⟨hal-00416081⟩

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