The electromigration influence on main characteristics of planar electrochemical systems with difference parameters was studied. The transporting processes are simulated, current-voltage characteristic, transfer function and THD were calculated, and quantitative estimates of the magnitude of the asymmetric electromigration flow and its effect on the nonlinearity coefficient of the system are obtained.

The basic principles of operation of the sensors based on molecular-electronic transducers (METs) are described. The review of investigations of physical processes into MET and their operating characteristics are considered. Modern MET manufacturing technologies and the production methods and the new applications of planar microelectronic METs are discussed. An overview of devices and systems based on the METs is given.

We have successfully applied the resistance grid technique to measure the disintegration speed in a special type of glass objects, widely known as Prince Rupert's drops. We use a fast digital oscilloscope and a simple electrical circuit, glued to the surface of the drops, to detect the voltage changes, corresponding to the breaks in the specific parts of the drops. The results obtained using this method are in good qualitative and quantitative agreement with theoretical predictions and previously published data. Moreover, the proposed experimental setup does not include any expensive equipment (such as a high-speed camera) and can therefore be widely used in high schools and universities.

Spent nuclear fuel plasma separation method approbation implies the use of model substances. Thus it is necessary to solve the problem of material conversion into a cold plasma flow, as well as the problem of deposition on collectors. For this purpose, we carried out a kinetic and hydrodynamic simulation of the discharge with hot cathode in the lead vapor (lead vapor was injected into the interelectrode gap). Dependencies of the ionization efficiency, electrostatic potential distribution, density distribution of ions and electrons in the discharge gap on the discharge current density and the model substance vapor concentration were obtained. The simulation results show that at discharge current density of about 3.5 A/cm(2) and the lead vapor concentration of 2 x 10(12) cm(-3), the ionization efficiency is close to 60%. Experimental research of the discharge with a hot cathode in the lead vapor was carried out. We also carried out the research of the Pb condensation coefficients on various substrates. For experimental data analysis the numerical model based on Monte Carlo method was used. The research results show that deposition coefficients at medium temperatures of substrates near 70 C-omicron do not drop lower than 75%.

The mechanism of ion desorption in the process of laser desorption/ionization from silicon surfaces is studied using pyridine and N,N-dimethyl-1-phenylethylamine as examples. Based on the experimental and theoretical results, dependences of ion signal on the surface temperature are obtained for two different wavelengths of laser radiation, 355 nm and 532 nm. The theoretical part of the work includes numerical calculations of surface temperatures of amorphous silicon using the SLIM software package and quantum-chemical calculations of binding energy between the ions and silicon surface using the Hartree-Fock method and Firefly software package. It is demonstrated that the ions are desorbed via a thermal mechanism at temperatures much lower than the melting point of amorphous silicon.

The role of laser irradiation in the processes of laser desorption/ionisation from silicon surfaces is considered. The basic functions of laser irradiation (chemical activation of the ion emitter surface, laser-induced ionisation of chemical compounds and ion desorption) are established and analysed.