1 Kucherenko M.G. Plasmon resonances in nanocomposites with degenerated electron gas of metal components and their demonstration in photonics of MOLECULAR HYBRID SYSTEMs
The paper shows that the spectra of plasmon resonances of metal nanoparticles substantially depend on the degeneracy level of the metal electron gas. Based on the linearized equation of Thomas-Fermi, the author has obtained expressions for dipole dynamic polarizabilities of two-component spherical particles with a degenerated electron gas. The investigator separately has considered case of a two-particle cluster, which polarizability is represented by the tensor of the second rank. Frequency dependencies of main characteristics of composite particles in a quasi-static approximation have been calculated. The author shows some ways to generalize the model to account for retardation effects. The paper reports in what way will change radiation characteristics of molecules located near the nanocomposites of this type, including the case of development of processes of non-radiative energy transfer from electronically excited centers to quenching centers.
2 Kubich V. I. GENERALIZED COMPLEXES OF REPRODUCTION of LUBRICATING LAYERs state in a simulative connection
The article suggests approaches to stimulating an estimation criterion of lubricating layers functionality in tribological systems upon termination of the lubricant supply and step loading of a friction zone. The authors defined the regression equation that relates a specific time of minimum friction coefficient constancy in a tribounit “a movable disc – a fixed block” to generalized complexes that make conditions for transient processes in the contact layers of materials of different tribological activity and aggregative state. At that they used the results of tribotechnical tests of simulative tribological systems. It allows performing a preliminary predictive evaluation of functionality of lubricating layers in the process of elements interaction of conjugation. An approach to the definition of evaluation criteria classes for different tribological materials systems.
3 Assylbekova S.N., Saulebekov A.O., Kambarova ZH.T. , Orakbai A. MODELING OF ELECTROSTATIC COLLIMATOR OF CHARGED PARTICLES BEAMS ON THE BASIS OF SPHERICAL MIRROR.
The modeling of the collimator of charged particles beams on the basis electrostatic spherical mirror was carried out. The conditions of collimation in the spherical mirror at the external reflection of charged particle beams were defined. The electrostatic spherical mirror in the external reflection regime of charged particle beams can be used as the collimator. The spherical mirror provides high quality of beams collimating and can be used an additional element in various devices. Calculation of electron-optical scheme was carried out by the “Focus” modeling program of axially-symmetrical systems of corpuscular optics with an arbitrary geometry of the electrodes.
4 Yurov V.M., Eremin E.N., Guchenko S.A., Laurynas V.Ch. The size dependence of the physical properties of nanoparticles and nanofilms.
Dimensional analysis of the experimentally observed dependence of the physical properties of nanoparticles, nanofilms and nanomaterials showed that there is a universal equation that accurately describes the observed size effects. It is shown that the size factor is also a universal value and is determined only by the atomic structure of the nanomaterial. Discovered universal relationships enable us to calculate the physical properties (mechanical, electrical, magnetic, thermal, etc.) of small particles and thin films based on knowledge of the properties of bulk materials. Based on the example of the nucleation of a new phase it is shown that the classical theory are applicable, taking into account the size dependence of the surface tension. The calculation of the temperature field of plate nanometer thickness showed that it is necessary to take into account the size dependence of all physical parameters of the theory (coefficients of thermal conductivity, etc.).
5 Vityaz P.A., Ilyushchenko A.F., Senyut V.T., Heyfets M.L., Chernyak I.N., Kolmakov A.G., Klimenko S.A. Formation of aluminum-schungite COMPOSITE MATERIAL UNDER PRESSURE.
The paper presents the investigation of the structure of a composite material based on aluminum modified by schungite carbon additives after thermal processing under high pressure conditions. It is shown that adding schungite filler makes aluminum grain growth slow and increases the microhardness of the composite material. In addition, the formation of the aluminum coating on the schungite carbon particles improves its interaction with the melted material and makes for the retention of the filler in the matrix. Process flow schemes for formation of Al-schungite composite material containing schungite within the range of 1.5-5 wt % are worked out. For a quantitative description of the fracture structure of the made aluminum composites, an original method of multifractal parameterization of structures is used.
6 Dyussembayev S., Almasov N., Yang Ruifeng, Prikhodko O., Tolepov Zh., Maksimova S., Sazonov A., Turmanova K. N.
STRUCTURE AND ELECTRONIC PROPERTIES OF MODIFIED BISMUTH FILMSGe2Sb2Te5
This article shows the study results of optical transmission spectra investigation and temperature dependencies of conductivity of virgin and modified by bismuth Ge2Sb2Te5 thin films, obtained by the method ion-plasma sputtering. It has been estimated that electronic properties of bismuth modified films significantly changes. Particularly, reducing of the optical energy gap and activation energy are estimated. While the conductivity at the room temperature increases. Decreasing of the optical energy gap can be interpreted that bismuth doping forms the chemical bonds with elements of the ChG matrix and forms inside the film well known narrow gap semiconductors compounds Bi2Te3, etc. In this case Fermi energy is still fixed in the middle of energy gap, decreasing of the activation energy of conductivity and increasing the conductivity as a consequence of decreasing of the optical energy gap.
7 Ibrayev N.Kh., Afanasyev D.A., Mirzoev K.Yu., Smagulov G.K. INVESTIGATION OF MICROSTRUCTURE AND SPECTRAL LUMINESCENCE PROPERTIES OF PEROVSKITE FILMS CH3NH3PbI3.
Investigation of microstructure and spectral-luminescent properties perovskite films (CH3NH3PbI3) was shown in this work. Perovskite films were made by two-step method synthesis with using the porous films of TiO2. Microscopic measurements show that the penetration depth of CH3NH3PbI3 film is 275 nm in TiO2 films. Spectral-luminescent properties of CH3NH3PbI3 films were investigated. Luminescence spectra indicate that on the surface of TiO2 film formed CH3NH3PbI3 films. Using of 35 μl of CH3NH3I solution leads to more quality perovskite films with fewer defects. The anneling temperature affects on luminescence intensity CH3NH3PbI3 of films has been studied.
8 Ryaguzov A.P., Alpysbayeva B.E., Nemkayeva R.R., Aliaskarov R.K., Mamyrbayeva D.M., Yukhnovets O.I.
Structure and properties dependence of hydrogenated carbon films on conditions of synthesis at Ar+CH4+H2 plasma.
In this paper we perform study of amorphous hydrogenated a-C:H films, obtained by method of magnetron DC ion-plasma sputtering of high-pure graphite target in Ar+CH4+H2 gas mixture. Growth of a-C:H films occurs at sufficiently non-equilibrium conditions, that differ not only by the main thermo dynamical parameters, but also physical-chemical processes of atoms condensation on the substrate. In order to reveal the key parameters, corresponding to the process of self-organization in the chaos of atoms condensation on the substrate, we use atomic force microscopy, Raman spectroscopy and optical spectrophotometry to study surface morphology, local atomic structure and optical properties of a-C:H films, produced at different synthesis conditions (pressure, discharge power and substrate temperature).
9 Serikov T.M., Ibrayev N.Kh., Amanzholova G.S. INFLUENCE OF THE SPECIFIC SURFACE OF THE NANOSTRUCTURED TIO2 MEMBRANE ON EFFICIENCY OF THE PHOTOVOLTAIC CELL.
Membranes of nanorods of titanium dioxide are synthesized in the work by hydrothermal method. On a surface of nanorods nanoparticles of titanium dioxide have been settled. By the nitrogen adsorption method (BET method) sizes of specific surface have been measured, full pore volume, distribution of pore by the sizes in the membranes formed by nanorods (NRs) and nanorods with the spherical nanoparticles of titanium dioxide (NRs+NPs) settled on a surface. By the method of scanning electronic microscopy morphology of a surface of the synthesized membranes has been studied. On a basis of the synthesized membranes solar cells have been collected by sensibilized dye. Volt-ampere characteristics and efficiency of cells are measured.
10 Aimukhanov A.K., Ibrayev N.Kh., Esimbek A.M.INFLUENCE OF Cu NANOPARTICLES ON ABSORPTION AND LUMINESCENT PROPERTIES OF OXAZINE 1 IN ETHANOL.
Researches have shown that by adding Cu NPs C = 5 * 10-6 mol/l in a solution of dye the optical density at the absorption maximum is increased in 1.14 times. Fluorescence intensity at the maximum becomes 1.1 times bigger. Position of maxima of the bands and their half-widths are not changed. Threshold of the stimulated emission reduced and equals 5/8 of its initial value. The duration of the laser pulse is reduced by 0.3 ns.
11 T.A. Koketai, A.K. Tussupbekova, A.S. Baltabekov, A.A. Ganyukova, S.A. Nukygazy Research the nature of impurity centers in KDP-MnSO4 crystal.
In the work research of impurity centers types in KDP-MnSO4 crystal is carried out. It is revealed that when activation the KDP crystal with sulphatic salts of Mn2+ ions two types of the impurity centers in a crystal lattice are formed. The first type of the impurity centers gives a long-wave absorption band and is not directly involved in radiation stimulated processes. The second type of the impurity centers changes charging states as a result of external influence. The experimental results agree well with the theoretical findings.
12 Agelmenev M.E., Bratukhin S.M., Polikarpov V.V., Bektasova G.S., Sadenova M.A., Tussupzhanov A.E. Some features of the behavior of liquid crystals in nanosystems.
In this work the results of research of the effect of nanosystems of different configurations on the behavior of liquid crystals at the temperature effect is presented. It was found that in case of T-shaped arrangement of nanotubes here is a stabilization of the LC molecules on the surface of the tube at the effect of temperature. It was shown that in other configurations, there is a movement of the LC molecules on the surface of nanosystems. The specific features of the dynamics of the flow of molecules depending on the structure of systems were established. These results show the importance of the nanotube orientation controlling in a matrix liquid crystals. Such influence nanocomposite topology represents a new technological method.
13 Krainov A.Yu., Moiseeva K.M., Minkov L.L. CALCULATION OF A COMBUSTION PROBLEM OF A METHANE-AIR MIXTURE IN a SLOT BURNER WITH a nonreactive inner INSERT IN A TWO-dimensional APPROACH.
The authors solved the burning problem of a methane-air mixture in a narrow slot burner with an internal partition wall in a two-dimensional approximation. The solution was made by means of the Ansys Fluent package for equations taking into account the effect of heat expansion, heat and mass transfer and chemical reaction kinetics of the first order. The study was performed in two stages. At the first stage a cold gas steady flow was calculated; at the second stage, problem of ignition and stable combustion mode setting was solved. The paper shows an example of a stable combustion mode setting for the process having started by the heated inner wall. The obtained results were compared with the results of calculations for one-dimensional model. The experimenters showed qualitative consistency between the results of numerical investigation of the problem in the one-dimensional formulation and simulation results using the Ansys Fluent package.
14 Pribaturin N.A., Meledin V.G., Glavny V.G. Measurement of local parameters of A LiqUID flow USING ELECTRICAL impedance sensorS
The paper considers a method for measuring liquid flow parameters based on simultaneous recordkeeping of the spatial distribution of characteristics of complex conductivity and dielectric permittivity of a liquid. Measurements can be carried out simultaneously in a great number of measuring nodes. The sensor is assembled on a grid basis and consists of two groups of wire electrodes, spaced apart along two parallel planes; the projection of the intersection locations of the electrodes forms measurement nodes. The method offers a good space and time localization. The measurement rate can work up to tens of thous ands of readings at all measurement nodes per second. This fact makes it possible to investigate non-steady processes of heat and mass transfer. The investigators tested the method by measuring the evolution of a liquid droplet in some amount of another liquid.
15 Onischuk A.A.1, Paleyev D.Yu.2, Baklanov A.M.1, Dubtsov S.N., Zamaschikov V.V., Korzhavin A.A.
Coal dust Nanoparticles in the ambience of mine WORKINGS AND their environmental hazard.
The authors studied the mechanism of formation of nanoscaled aerosol at mechanical destruction of coal both by a shearer and in a continuous flow mill under laboratory conditions. They found that the spectrum and morphology of particles formed in a laboratory mill are in line with those of the nanoaerosol formed in a mine. The investigation of ignition of a methane-air-nanoaerosol mixture in a spherical reaction vessel with 10 liters volume showed that such a mixture becomes essentially more explosive. This made itself felt both by the growth of the maximum explosion pressure, and a significant increase in its rate of rise. The studies suggested that the nanoaerosol was originated from organic compounds contained in the coal transforming into the gaseous phase at the local heating of the coal on shearer bits.
16 Sakipova S.E., Kambarova Zh.T. A SAIL-TYPE WINDTURBINE FOR LOW-speed wind
The article gives a brief overview of the most significant results obtained during the execution of the grant project (state registration number 0113RK01001). Within the framework of the project the investigators studied possibility of using low-speed wind energy in the city of Karaganda. They developed and created a variety of models of low power sail-type multiblade wind turbine to convert wind energy. The originality of the presented wind turbine is that blades with a dynamically variable surface shape are used. The analysis of results of aerodynamic testing of wind turbine models was performed at a laboratory-scale plant and in natural wind under different climatic conditions.
17 A.A. Aikeyeva1, X.S. Rogovaya1, A.R. Tanskozhanova1, P.A.Mukhtarova2, A.E. Ospanov3. Development Of Imitating Model Of Skip Motion In The Program Environment ANSYS MAXWELL.
This work is directed on development of imitating model of electromagnetic lifting installation system elements. In the work the principle of work of electromagnetic lifting installation elements of the “skip-constant magnet coil” is presented and described. Model operation was carried out in the ANSYS Maxwell program. The task of model operation is determination of the key magnetic parameters of installation elements: the Lorentz forces, magnetic intensity and magnetic induction. According to calculated parameters graphic charts are made and engineering functions in the form of the equations with one variable are constructed.
18 A.A. Aikeyeva1, B.A. Zhautikov2, X.S. Rogovaya1, F.B. Zhautikov3, P.A. Mukhtarova4, A.R. Tanskozhanova1, A.E. Ospanov5
THE DYNAMIC ANALYSIS OF THE MAIN CHARACTERISTICS OF ELECTROMAGNETIC LIFTING INSTALLATION ELEMENTS.
This work concerns creation of imitating model of elements of the system “skip- constant magnet-coil” of electromagnetic lifting installation. In the work the principle of work of electromagnetic lifting installation elements is presented and described. For model operation the ANSYS Maxwell program was used. The problem of model operation is definition of the main magnetic characteristics of installation elements (Lorentz force, magnetic intensity and magnetic induction). The work describes five experiments which calculated parameters are used for construction the common graphic charts. By results of experiments engineering equations with one variable are worked-out. The received equations allow to define the characteristics of magnetic field counted in the work.