Optical and thermal investigation of GeO2-PbO thin films doped with Au and Ag nanoparticles
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
29/10/2013
29/10/2013
02/08/2013
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| Resumo |
The present work reports on the thermo-optical study of germanate thin films doped with Au and Ag nanoparticles. Transmission Electron Microscopy images, UV-visible absorption and Micro-Raman scattering evidenced the presence of nanoparticles and the formation of collective excitations, the so called surface plasmons. Moreover, the effects of the metallic nanoparticles in the thermal properties of the films were observed. The thermal lens technique was proposed to evaluate the Thermal Diffusivity (D) of the samples. It furnishes superficial spatial resolution of about 100 mu m, so it is appropriate to study inhomogeneous samples. It is shown that D may change up to a factor 3 over the surface of a film because of the differences in the nanoparticles concentration distribution. (C) 2011 Elsevier B.V. All rights reserved. CAPES CAPES CNPq CNPq FAPEMIG FAPEMIG FAPESP FAPESP |
| Identificador |
THIN SOLID FILMS, LAUSANNE, v. 520, n. 7, supl. 1, Part 3, pp. 2667-2671, 11324, 2012 0040-6090 http://www.producao.usp.br/handle/BDPI/36632 10.1016/j.tsf.2011.11.031 |
| Idioma(s) |
eng |
| Publicador |
ELSEVIER SCIENCE SA LAUSANNE |
| Relação |
THIN SOLID FILMS |
| Direitos |
closedAccess Copyright ELSEVIER SCIENCE SA |
| Palavras-Chave | #GERMANATE #THIN FILMS #RAMAN SPECTROSCOPY #THERMAL LENS #THERMAL DIFFUSIVITY #SILVER NANOPARTICLES #GOLD NANOPARTICLES #SPUTTERING #SILVER NANOPARTICLES #GOLD NANOPARTICLES #GLASSES #CONDUCTIVITY #ENHANCEMENT #MATERIALS SCIENCE, MULTIDISCIPLINARY #MATERIALS SCIENCE, COATINGS & FILMS #PHYSICS, APPLIED #PHYSICS, CONDENSED MATTER |
| Tipo |
article original article publishedVersion |
