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Kozik S.,B. I. Stepanov Institute of Physics | Binhussain M.A.,King Abdulaziz City for Science and Technology | Smirnov A.,B. I. Stepanov Institute of Physics | Khilo N.,B. I. Stepanov Institute of Physics | Agabekov V.,Institute of Chemistry of New Materials NASB
Advanced Electromagnetics | Year: 2014

Light scattering on rough surface with nano-sized features needs simulation with rigorous electromagnetic solver. The performance of such grid method as FDTD is closely connected with mesh size of computational domain and curvilinear surface approximation. The main goal of this work was to introduce simple model of surface roughness which does not involve objects with complicated shapes and could help to reduce computational costs. We described and proved numerically that the influence of surface roughness at the interfaces in metal-dielectric composite materials could be described by proper selection of refractive index of dielectric layers. Our calculations show that this model works for roughness with RMS value about 1 nm and below. Some examples of roughness realization with narrow spatial spectrum and high LER value could not be described properly by simple dielectric index modification, thus forming the limits of this simple roughness model applicability. © 2014, Advanced Electromagnetics. All rights reserved.


Skoptsov E.,Institute of Chemistry of New Materials NASB | Agabekov V.,Institute of Chemistry of New Materials NASB | Binhussain M.A.,King Abdulaziz City for Science and Technology | Egorov D.,Institute of Chemistry of New Materials NASB | Ropot P.,B. I. Stepanov Institute of Physics
Applied Physics A | Year: 2014

The techniques of formation of thin metallic coatings by deposition of silver nanoparticles (NPs) from solution onto the surface of glass and silicon substrates modified by polyelectrolytes were developed. The possibilities of the adsorption of individual silver particles, as well as creation of continuous films on their basis, were shown. The transmission, absorption and reflection spectra of obtained coatings were investigated. The most promising structure for metamaterials creation from the list of formed one was determined-solid thin film of Ag NPs on a glass substrate modified by polyethylenimine. © 2014 Springer-Verlag Berlin Heidelberg.

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