Análise de um Sensor Plasmônico Acoplado à Arranjo Periódico de Nanopartículas tipo Core-Shell

In this paper we theoretically analyzed a SPR type sensor, which multilayer structure are based on the Kretschmann configuration, coupled to periodic array of gold-core and dielectric-shell nanopar ticles. The analytical model consider the nanoparticles array as a homogeneous layer with effective permittivity given by Clausius-Mossotti mixing formula and the core-shell polarizability in the quasi-static scattering regime. The electromagnetic wave propagation is evaluated by generalized reflection coefficient for multilayer structures. The analytical results are compared with numerical results obtained in 3D geometry simulation in COMSOL R software.