Numerical study of surface enhanced Raman scattering (SERS) by a radial distribution of molecules covering a metal single spherical particle

Resultado de la investigación: Contribución a una revistaArtículo de la conferenciarevisión exhaustiva

Resumen

We present a computational model to analyze the electromagnetic contribution to Surface Enhanced Raman Scattering (SERS) based on Lorenz-Mie scattering for a single metal spherical particle covered by a shell of molecules, immerse, all the system, in a dielectric medium. In the model, all molecules are assumed to be an electrical dipole at fixed direction: the same of the linear polarization of the exciting plane electromagnetic field. The volume occupied for the molecules is twice the volume of the particle. A constant radial of molecular density is considered. The enhancement factor, EF is defined as the ratio of the total scattered power by the system particle-molecules to the total scattered power by the same distribution of molecules in the same dielectric medium. We study the EF for particles with radii between zero and 350 nm. Three wavelengths are used: 532, 633 and 382 nm. A comparative analysis between particles of copper, aurum and silver is presented. The 459 cm -1 Stokes line of carbon tetrachloride is studied.

Idioma originalInglés
Número de artículo221
Páginas (desde-hasta)1159-1163
Número de páginas5
PublicaciónProceedings of SPIE - The International Society for Optical Engineering
Volumen5622
N.ºPART 3
DOI
EstadoPublicada - 2004
EventoRIAO/OPTILAS 2004: 5th Iberoamerican Meeting on Optics, and 8th Latin American Meeting on Optics, Lasers, and their Applications; ICO Regional Meeting - Porlamar, República Bolivariana de Venezuela
Duración: 3 oct. 20048 oct. 2004

Huella

Profundice en los temas de investigación de 'Numerical study of surface enhanced Raman scattering (SERS) by a radial distribution of molecules covering a metal single spherical particle'. En conjunto forman una huella única.

Citar esto