Short note on the dipole approximation for electric field enhancement by small metallic nanoparticles

Dominique Barchiesi 1, 2 Thomas Grosges 1, 2
1 Gamma3 - Automatic mesh generation and advanced methods
Inria Paris-Rocquencourt, UTT - Université de Technologie de Troyes
Abstract : Widespread numerous applications of electric field enhancement on the surface of nanoparticles are of interest, either in physics, chemistry, or biology. The Lorentz–Mie–Debye rigorous model of the scattering of light by spherical nanoparticles has been known for over a century but is often simplified to its dipole approximation for small particles. Indeed, approximated models are of interest to identify the phenomena involved in the electric field enhancement that is used to improve the signal of surface enhanced raman spectroscopy (SERS) in particular. Using the series expansion of the electric field given by the Lorentz–Mie–Debye theory, we show that an order higher than the dipole approximation is necessary to evaluate the field enhancement, even for small radii.
Type de document :
Article dans une revue
Journal of Optics, Institute of Physics (IOP), 2015, Special issue on surface-enhanced Raman spectroscopy, 17 (11), pp.114003. 〈10.1088/2040-8978/17/11/114003〉
Liste complète des métadonnées

https://hal.inria.fr/hal-01220045
Contributeur : Thomas Grosges <>
Soumis le : vendredi 23 octobre 2015 - 18:37:59
Dernière modification le : mardi 17 avril 2018 - 11:32:52

Identifiants

Collections

Citation

Dominique Barchiesi, Thomas Grosges. Short note on the dipole approximation for electric field enhancement by small metallic nanoparticles. Journal of Optics, Institute of Physics (IOP), 2015, Special issue on surface-enhanced Raman spectroscopy, 17 (11), pp.114003. 〈10.1088/2040-8978/17/11/114003〉. 〈hal-01220045〉

Partager

Métriques

Consultations de la notice

109