Publicação
Investigation of surface plasmon resonance in gold/alumina composite films prepared by rf-sputtering
| Resumo: | Alumina films containing gold nanoparticles (NPs) were grown by magnetron radio frequency (rf) sputtering technique. They were investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD) and optical absorption spectroscopy. It is suggested that the increase of the contrast of surface plasmon resonance band after annealing is connected with increasing of electron free mean pass in Au NPs rather than with change in particle size distribution. The absorption spectra of the nanocomposites have been modelled taking into account a correction of the dielectric constant for electron mean free path limitation. |
|---|---|
| Autores principais: | Soloviev, A. |
| Outros Autores: | Rolo, Anabela G.; Barber, David J.; Gomes, M. J. M.; Silva, Carlos J. R. |
| Assunto: | Surface plasmon resonance (SPR) Nanoparticles Gold Alumina Transmission electron microscopy (TEM) X-ray diffraction (XRD) Optical absorption RF-magnetron sputtering Plasmon |
| Ano: | 2010 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | Alumina films containing gold nanoparticles (NPs) were grown by magnetron radio frequency (rf) sputtering technique. They were investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD) and optical absorption spectroscopy. It is suggested that the increase of the contrast of surface plasmon resonance band after annealing is connected with increasing of electron free mean pass in Au NPs rather than with change in particle size distribution. The absorption spectra of the nanocomposites have been modelled taking into account a correction of the dielectric constant for electron mean free path limitation. |
|---|