Effective Medium Approach for Investigation of Optical Properties of Nanocomposites with Plasmonic Nanoparticles

P. Varlamov (1) , Y. Andreeva (1) , M. Sergeev (1) , F. Vocanson (2) , Tatiana Itina (2)

1 ITMO - National Research University of Information Technologies, Mechanics and Optics [St. Petersburg]
2 LHC - Laboratoire Hubert Curien [Saint Etienne]

We present an approach based on effective medium theory in the Bruggeman-Bergman approximation for modeling of optical properties of nanocomposites based on TiO 2 and SiO 2 films with Ag nanoparticles. The importance of volume fraction of metal phase for spectral characteristics of such nanocomposite is demonstrated and confirmed. The increase of this parameter leads to the redshift of the spectral peak and an increase of the reflection amplitude. The numerical calculations demonstrate a good agreement with the experimental data for laser-obtained TiO 2 and SiO 2 -based nanocomposite films with Ag nanoparticles.

Domains: Engineering Sciences [physics]; Chemical and Process Engineering; Engineering Sciences [physics]; Physics [physics]

P. Varlamov, Y. Andreeva, M. Sergeev, F. Vocanson, Tatiana Itina. Effective Medium Approach for Investigation of Optical Properties of Nanocomposites with Plasmonic Nanoparticles. 14th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2020, Sep 2020, New York, United States. ⟨ujm-02981324⟩