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Spectroellipsometric characterization and modeling of plasmonic diamond-like carbon nanocomposite films with embedded Ag nanoparticles. 2015

Iryna Yaremchuk, and Šarunas Meškinis, and Volodymyr Fitio, and Yaroslav Bobitski, and Kestutis Šlapikas, and Arvydas Čiegis, and Zigmas Balevičius, and Algirdas Selskis, and Sigitas Tamulevičius
Department of Photonics, Lviv Polytechnic National University, S. Bandera Str. 12, Lviv, 79013 Ukraine.

Diamond-like carbon nanocomposite films with embedded silver nanoparticles are considered experimentally (spectroellipsometric characterization) and theoretically (modeling of optical properties). Metallic nanocomposite films were synthesized by reactive magnetron sputtering and were studied by transmission electron microscope (TEM) and atomic force microscope (AFM). The optical constants of the films were determined from spectroscopic ellipsometry measurements and were modeled using the Maxwell-Garnett approximations. Comparison between the extended and renormalized Maxwell-Garnett theory was conducted. Surface plasmon resonance peak have been found to be strongly dependent on the shape of nanoparticles and interaction between them.

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