Synthesis, optical properties and modeling of silver core-silver oxide shell nanostructures in silica films

Victor M. Rentería-Tapia, Guadalupe Valverde-Aguilar, Jorge A. García-Macedo

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

5 Citas (Scopus)

Resumen

Sol-gel silica films containing silver ions were annealed in a rich-hydrogen atmosphere and subsequently in a rich-oxygen atmosphere. High resolution transmission electronic microscopy measurements shown unusual core-shell structures of silver-silver oxide nanoparticles in these films. The optical properties of these nanostructures exhibited red shift and damping in the UV-vis spectra. In order to calculate the optical properties were used the Mie theory using two approaches. The first one, corresponding to the core-shell model that includes a refractive index of the shell (ns) different to the one of the host matrix (nm). While in the second approach, we replaced in the Mie theory the refractive index of the environment (silica) by a local refractive index (n1) depending on the thickness of the silver oxide shell. Both calculations given the same results because they are equivalents.

Idioma originalInglés
Título de la publicación alojadaPlasmonics
Subtítulo de la publicación alojadaMetallic Nanostructures and Their Optical Properties V
DOI
EstadoPublicada - 2007
EventoPlasmonics: Metallic Nanostructures and Their Optical Properties V - San Diego, CA, Estados Unidos
Duración: 26 ago. 200729 ago. 2007

Serie de la publicación

NombreProceedings of SPIE - The International Society for Optical Engineering
Volumen6641
ISSN (versión impresa)0277-786X

Conferencia

ConferenciaPlasmonics: Metallic Nanostructures and Their Optical Properties V
País/TerritorioEstados Unidos
CiudadSan Diego, CA
Período26/08/0729/08/07

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