http://www.cnr.it/ontology/cnr/individuo/prodotto/ID31780

Online monitoring of alloyed bimetallic nanoparticle formation by optical spectroscopy (Articolo in rivista)

Type

Label

Online monitoring of alloyed bimetallic nanoparticle formation by optical spectroscopy (Articolo in rivista) (literal)

Anno

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

Alternative label

V.I. Belotelov; G. Carotenuto; L. Nicolais; A. Longo; G.P. Pepe; P. Perlo; A.K. Zvezdin (2006)
Online monitoring of alloyed bimetallic nanoparticle formation by optical spectroscopy
in Journal of applied physics; AIP, American institute of physics, Melville, NY (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

V.I. Belotelov; G. Carotenuto; L. Nicolais; A. Longo; G.P. Pepe; P. Perlo; A.K. Zvezdin (literal)

Pagina inizio

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://jap.aip.org/resource/1/japiau/v99/i4/p044304_s1?isAuthorized=no (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

Rivista

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

Note

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

- Moscow State University. Russia - IMCB-CNR- Italy - Università di Napoli. Italy - FIAT Research Center. Torino. Italy (literal)

Titolo

Online monitoring of alloyed bimetallic nanoparticle formation by optical spectroscopy (literal)

Abstract

An extension of the Mie [Ann. Phys. 25, 377 (1908) ] theory for the calculation of optical absorption spectra in bimetallic nanoparticles has been developed. The nanoparticle dielectric function is assumed to be a weighted linear combination of dielectric functions for single particles. Accordingly, analytical expressions for the resonance light absorption frequency, the spectrum maximum value, and the full width at half maximum have been derived, taking into account the interband transitions in the dielectric functions. Experiments have been performed on polymer-embedded Ag/Au nanoparticles prepared by reducing the presence of poly(vinyl pyrrolidone) at room temperature. Experimental absorption spectra have been compared to numerical curves derived by the model in the case of Ag/Au systems at different relative compositions, and they are in good agreement. The time dependence of both Ag/Au nanoparticle size and chemical composition during the growth process has also been investigated. (literal)

Editore