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Composition, nanostructure, and optical properties of silver and silver-copper lusters
Pradell Cara, Trinitat; Pavlov, R.S.; Gutiérrez Repiso, Carolina; Climent Font, Aurelio; Molera Marimon, Judit
Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear; Universitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials
Lusters are composite thin layers of coinage metal nanoparticles in glass displaying peculiar optical properties and obtained by a process involving ionic exchange, diffusion, and crystallization. In particular, the origin of the high reflectance (golden-shine) shown by those layers has been subject of some discussion. It has been attributed to either the presence of larger particles, thinner multiple layers or higher volume fraction of nanoparticles. The object of this paper is to clarify this for which a set of laboratory designed lusters are analysed by Rutherford backscattering spectroscopy, transmission electron microscopy, x-ray diffraction, and ultraviolet-visible spectroscopy. Model calculations and numerical simulations using the finite difference time domain method were also performed to evaluate the optical properties. Finally, the correlation between synthesis conditions, nanostructure, and optical properties is obtained for these materials.
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos
Composite materials
Composite materials
Finite difference time-domain analysis
Metallic thin films
Rutherford backscattering
Transmission electron microscopy
Ultraviolet spectra
Visible spectra
X-ray diffraction
Metals and metallic alloys
Thin film structure and morphology
Rutherford backscattering and other methods of chemical analysis
Finite-difference methods
and alloys
Materials compostos
Attribution-NonCommercial-NoDerivs 3.0 Spain
American Institute of Physics (AIP)

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