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Optical Properties of Core–Shell Gold–Silver and Silver–Gold Nanoparticles for Near UV and Visible Radiation Wavelengths

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Abstract

Modeling of optical properties of spherical core–shell gold–silver and silver–gold nanoparticles (NPs) was carried out based on extended Mie theory for radiation wavelengths in the range 300 ≤ λ ≤ 650 nm. Efficiency factors of absorption, scattering, and extinction of radiation by core–shell NPs in the range of the radii 5–100 nm and in the range of shell thicknesses 0–40 nm were calculated. Results show the nonlinear dependences of optical properties of core–shell gold–silver and silver–gold nanoparticles on radiation wavelengths, core radii, and shell thicknesses. These results can be applied for photonic technologies of nanoparticles.

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Acknowledgments

The project was financially supported by the German Research Foundation DFG (FR 1348/12-1) for W.F. and by the Belarusian State Program “Convergence 2.4.02” for V.K.P.

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Authors and Affiliations

  1. Belarusian National Technical University, Nezavisimosti pr. 65, Minsk, 220013, Belarus

    V. K. Pustovalov

  2. B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Nezavisimosti pr. 68, Minsk, 220072, Belarus

    L. G. Astafyeva

  3. Institute of Photonic Technology, 07702, Jena, Germany

    W. Fritzsche

Authors
  1. V. K. Pustovalov
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  2. L. G. Astafyeva
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  3. W. Fritzsche
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Correspondence to V. K. Pustovalov.

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Pustovalov, V.K., Astafyeva, L.G. & Fritzsche, W. Optical Properties of Core–Shell Gold–Silver and Silver–Gold Nanoparticles for Near UV and Visible Radiation Wavelengths. Plasmonics 7, 469–474 (2012). https://doi.org/10.1007/s11468-012-9330-z

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  • DOI: https://doi.org/10.1007/s11468-012-9330-z

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