Optical properties of core-shell structured Ag/SiO2 nanocomposites

Jun Wang; William B. White; James H. Adair

doi:10.1016/j.mseb.2009.11.026

Optical properties of core-shell structured Ag/SiO₂ nanocomposites

Jun Wang, William B. White, James H. Adair

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Silver nanoclusters coated by SiO₂ were synthesized by a reverse micelle technique to obtain a core-shell microstructure with tunable particle size less than 50 nm. The refractive indices of the Ag/SiO₂ nanocomposites were calculated based on a theoretical model for binary composite materials which illustrated a strong correlation to the size of the metallic core and the dielectric shell. Dynamic light scattering analysis of the Ag/SiO₂ nanocomposites revealed that the refractive index of the nanocomposites was about 2.40, which was well in the range predicted by theoretical modeling. Optical absorption spectra and silver quantum dot size induced color change of the Ag/SiO₂ nanocomposites suspension were also investigated.

Original language	English (US)
Pages (from-to)	235-238
Number of pages	4
Journal	Materials Science and Engineering: B
Volume	166
Issue number	3
DOIs	https://doi.org/10.1016/j.mseb.2009.11.026
State	Published - Feb 15 2010

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.mseb.2009.11.026

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title = "Optical properties of core-shell structured Ag/SiO2 nanocomposites",

abstract = "Silver nanoclusters coated by SiO2 were synthesized by a reverse micelle technique to obtain a core-shell microstructure with tunable particle size less than 50 nm. The refractive indices of the Ag/SiO2 nanocomposites were calculated based on a theoretical model for binary composite materials which illustrated a strong correlation to the size of the metallic core and the dielectric shell. Dynamic light scattering analysis of the Ag/SiO2 nanocomposites revealed that the refractive index of the nanocomposites was about 2.40, which was well in the range predicted by theoretical modeling. Optical absorption spectra and silver quantum dot size induced color change of the Ag/SiO2 nanocomposites suspension were also investigated.",

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AU - White, William B.

AU - Adair, James H.

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N2 - Silver nanoclusters coated by SiO2 were synthesized by a reverse micelle technique to obtain a core-shell microstructure with tunable particle size less than 50 nm. The refractive indices of the Ag/SiO2 nanocomposites were calculated based on a theoretical model for binary composite materials which illustrated a strong correlation to the size of the metallic core and the dielectric shell. Dynamic light scattering analysis of the Ag/SiO2 nanocomposites revealed that the refractive index of the nanocomposites was about 2.40, which was well in the range predicted by theoretical modeling. Optical absorption spectra and silver quantum dot size induced color change of the Ag/SiO2 nanocomposites suspension were also investigated.

AB - Silver nanoclusters coated by SiO2 were synthesized by a reverse micelle technique to obtain a core-shell microstructure with tunable particle size less than 50 nm. The refractive indices of the Ag/SiO2 nanocomposites were calculated based on a theoretical model for binary composite materials which illustrated a strong correlation to the size of the metallic core and the dielectric shell. Dynamic light scattering analysis of the Ag/SiO2 nanocomposites revealed that the refractive index of the nanocomposites was about 2.40, which was well in the range predicted by theoretical modeling. Optical absorption spectra and silver quantum dot size induced color change of the Ag/SiO2 nanocomposites suspension were also investigated.

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Optical properties of core-shell structured Ag/SiO₂ nanocomposites

Abstract

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