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In the dipole approximation for the spherical nickel nanoparticle with a diameter D0= 2.5 ÷ 7 nm in the spectral range from 0.2 to 1.1 μm at T = 300 K, efficiency factors of the absorption Κaand scattering Κswere determined with the help of the experimental values of the complex specific electrical polarizability. Numerical calculations of the Κaand Κs of the nickel nanoparticles were carried out...
Modeling of the shielding effectiveness of the perforated film electromagnetic screens, depending on their design parameters, was conducted. Samples of the electromagnetic screens based on the perforated metal or metal-dielectric coatings were manufactured. A comprehensive experimental study of the test samples was conducted. The comparative analysis of the experimental and theoretical investigations...
The results of researches of the investigations of dimensional dependencies of optical parameters of nanodimensional particles of silver, nickel chrome in high-frequency spectral diapason 1.1+3.2 eV are presented. It is shown, that values of high-frequency conductivity of nanodimensional particles of these metals are considerable lesser than in macroscopic samples and with diminishing of particle...
Optical-transparent film coatings on the basis of metal-dielectric nanocomposites are investigated. Methods of determination of coefficients of reflection and transmission of nanocomposite metal-dielectric structures on the basis of metals Ni, Al, Cu are developed and numerical modelling of their optical characteristics is fulfilled. Spectral dependences of coefficients of reflection and transmission...
Influence of technological modes of synthesis of aluminum oxynitride films by a method of magnetron reactive sputtering on their physical and chemical parameters is probed. Studied by IR spectroscopy and Auger electron microscopy and elemental, phase and structural composition of the synthesized films. Features of spectral and electro-physical parameters of films are discussed. Chemical stability...
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