The diffusional growth regime of silver clusters in hydrogenated silver-sodium exchanged glasses has been numerically analysed. The diffusion coefficients of the three elements that contribute to silver cluster formation, namely H, Ag+, and Ag-0, have been established. The activation energy of the reactant Ag-0 diffusion coefficient is consistent in the three analysed different experimental results: Ag loss through evaporation, near-surface Ag accumulation, and optical absorption density. The calculated Ag-0 diffusion coefficient accounts for the threshold time necessary to obtain a cluster size to give rise to a detectable absorption.

Clustering of silver atoms in hydrogenated silver-sodium exchanged glasses

DE MARCHI, GIOVANNA;MATTEI, GIOVANNI;MAZZOLDI, PAOLO;
2000

Abstract

The diffusional growth regime of silver clusters in hydrogenated silver-sodium exchanged glasses has been numerically analysed. The diffusion coefficients of the three elements that contribute to silver cluster formation, namely H, Ag+, and Ag-0, have been established. The activation energy of the reactant Ag-0 diffusion coefficient is consistent in the three analysed different experimental results: Ag loss through evaporation, near-surface Ag accumulation, and optical absorption density. The calculated Ag-0 diffusion coefficient accounts for the threshold time necessary to obtain a cluster size to give rise to a detectable absorption.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2459875
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 39
  • ???jsp.display-item.citation.isi??? 38
social impact