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9 June 2006 Polymer-based bimetallic nanocomposites for the optical filters
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A theoretical approach for the calculation of the bimetallic nanoparticles absorption spectra has been developed as an extension of the Mie theory in which nanoparticle dielectric function is found by the weighted linear combination of the dielectric functions for particles made of the corresponding pure metals. We propose a simple method for the on-line monitoring of the bimetallic nanoparticles composition based on the measurement of the absorption peak position. Elaborated theoretical approach was used to investigate the polymer embedded Ag/Au nanoparticles. Calculated absorption spectra for the Ag/Au nanoscopic systems showed good agreement with the experimental data. Temporal evolution of the Ag/Au nanoparticles size and composition has also been investigated by this approach.
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V. I. Belotelov, G. Carotenuto, G. Pepe, P. Perlo, and A. K. Zvezdin "Polymer-based bimetallic nanocomposites for the optical filters", Proc. SPIE 6258, ICONO 2005: Novel Photonics Materials: Physics and Optical Diagnostics of Nanostructures, 62580P (9 June 2006);

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