Optical properties of core-shell structured Ag/SiO2 nanocomposites

Jun Wang, William B. White, James Hansell Adair

Research output: Contribution to journalArticle

7 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)235-238
Number of pages4
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume166
Issue number3
DOIs
StatePublished - Feb 15 2010

Fingerprint

Nanocomposites
nanocomposites
Optical properties
optical properties
Silver
Refractive index
silver
refractivity
Nanoclusters
Micelles
Dynamic light scattering
nanoclusters
Light absorption
Semiconductor quantum dots
optical spectrum
Absorption spectra
micelles
Suspensions
optical absorption
light scattering

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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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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Optical properties of core-shell structured Ag/SiO2 nanocomposites. / Wang, Jun; White, William B.; Adair, James Hansell.

In: Materials Science and Engineering B: Solid-State Materials for Advanced Technology, Vol. 166, No. 3, 15.02.2010, p. 235-238.

Research output: Contribution to journalArticle

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