The article presents measurement stand, which is used to measure polarization and depolarization currents, using PDC method, in wet transformer oil-impregnated cellulose isolation. Maximum resolution of measured currents reaches 10^-15  A. The accuracy of thermal stabilization, in three-electrode capacitor system, comes to 0,001 °C.

Developed and investigated radiometric system EHF (extremely high frequency) range for the diagnosis of tissue samples affected by carcinoma. EHF system are significantly higher than in the possibility of identifying a lower frequency range, as in UHF band (UHF band) and UHF (ultra high frequency) resolution of 1-3 mm are impossible. It was established that the affected carcinoma tissue samples are 3 dB lower transmittance compared to unaffected tissues. Analysis of the dependency of the harmonic components of the modulation signal passing through the examined tissue samples shows dramatic difference in the behavior of the harmonic components of the frequency domain. This phenomenon appears to altered tissue the presence of slumps that due to the interaction of electromagnetic waves with the tissue samples may be explained by the so-called stochastic resonance effect.

We developed a conception of the electronic-optical device for carrying out of the nearsurface laser phoresis procedure using the dynamical gradient light field (DGLF) of the interference type. To select an optimal construction we considered some variants of devices for formation of the such DGLFs. In the framework of a model of biological tissues with nonequilibrium radiation absorption by its microstructures we calculated the general form of the temperature response dependence on the coherence ratio of the affecting DGLF. We proposed a criterion for choice of a laser source on the coherence ratio of its radiation for near-surface laser phoresis with DGLF.

The efficient electroluminescence in the region of band-to-band (1,1 eV) and dislocationrelated (D1 – 0,8 eV) transitions has been detected from Si p-n structures at room and liquid nitrogen temperatures. It was found that dislocation-related luminescence in Si single crystals is considerably stronger than the intrinsic band-to-band emission in the wide temperature range of 4,2–300 K. The temperature dependent measurement of the D1 photoluminescence intensity shows that two energy levels placed below the conduction (0,04 eV) and above valence (0,32 eV) bands are responsible for this radiative recombination on dislocations.

A synthesizer of frequencies with direct digital synthesis and a frequency multiplier on PLL are developed. Phase noises of an output signal of the synthesizer, noise of a loop of PLL, level of collateral radiations on outputs of the digital synthesizer (frequency of 100 MHz) and the frequency multiplier output on a loop of PLL (frequency of 8 GHz) are probed.

It is shown that when using eddy current thickness meter with superimposed transducer the maximal thickness of the conductive sheets or conductive surface layers of a two-layer wares, which may be controlled with selected frequency of excitation current of the transducer, can be estimated based on the magnitude of the penetration depth of a plane electromagnetic wave in the half-space, the specific electrical conductivity and the relative magnetic permeability of which is equal to the values of these parameters in a controlled surface layer or sheet of two-layer ware.

The article studies and experimentally proves possibility of application of atomic force microscope for measurement of small magnetostrictive deformations of materials. Exemplary results of measurements for the samples made of technically pure nickel exhibiting strong magnetostrictive effect are presented.

Stray capacitance effects and their influence on Kelvin probe’s performance are studied using mathematical and computer simulation. Presence of metal surface, even grounded, in vicinity of vibrating Kelvin probe produces the additional stray signal of complex harmonic character. Mean value and amplitude of this stray signal depends mostly on the ratio of stray and measurement vibrating capacitors gaps d1/d0. The developed model can be used for theoretical analysis of Kelvin probe configuration and probe electrometer’s input circuit.

Polycrystalline Cu(In,Ga)Se₂ (CIGS) thin films were grown on molybdenum-coated soda-lime glass substrates by co-evaporation of the elements Cu, In, Ga and Se from independent sources. The effect of electron irradiation on the electrical and optical properties of CIGS thin films and solar cells with the structure ZnO:Al/i-ZnO/CdS/CIGS/Mo/glass was studied. It was found that the degradation of the electrical parameters of solar cells (open-circuit voltage, short-circuit current density and efficiency) took place due to the formation of radiation defects (recombination centers) with deep energy levels in the bandgap of CIGS. It was revealed that after electron irradiation intensity of near band-edge luminescence band at about 1,1 eV decreased considerably and bands of luminescence with maxima at 0,93 and 0,75 eV appeared.

The method of trifocal diffractive lens images quality assessment in the presence of the background illumination is proposed. The background component with nonuniform intensity distribution is modeled. The effect of diffractive lens light efficiency and spherical aberration on the image contrast is presented.

Intensity of «direct» gamma-quanta absorbed in cylindrical detector has been determined for the detector placed over soil uniformly contaminated in depth. The dependence of impact range radius for NaI(Tl) detector to cesium depth contamination is established for soil from Tohoku region, Japan.