Materials Literature
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In this paper, a novel decoupling control method based on generalized inverse system is presented to solve the problem of SHAPF (Shunt Hybrid Active Power Filter) possessing the characteristics of 2-input-2-output nonlinearity and strong coupling. Based on the analysis of operation principle, the mathematical model of…
The dynamic nature of molecular materials are functional due to their nonlinear optical properties. Nonlinearity arising due to intermolecular interactions as self assembling phenomena between organic and metallic nanoparticles is of interest. The insight of this phenomena is attributed both by experimental and quantu…
In this work, barium titanate, BaTiO3 (BT) and Zr doped BT, BaZrxTi1-xO3 (BZT) with powders were successfully produced using the soft combustion method. Barium nitrate and titanium (IV) isopropoxide were used as the starting materials while zirconium (IV) oxynitrate hydrate as the doping precursors, and glycine as the…
In this paper, we propose an improved new methodology in energy conformation problems for finding optimum energy values. First, we construct the Bezier surfaces near local minimizers based on the data obtained from Density Functional Theory (DFT) calculations. Second, we blend the constructed surfaces in order to obta…
As magnetic material has magnetic hysteresis characteristics, there is a problem that gives an error in current sensor output. So it is important to clarify the influence of magnetic hysteresis phenomena in current sensor. The object of this paper is to propose a method in consideration of a magnetic hysteresis in a F…
Изучены эффекты зарядки диэлектрических мишеней при облучении электронами средних энергий в сканирующем электронном микроскопе. Установлены существенные различия кинетики зарядки для исходных образцов и образцов, предварительно облученных электронами и ионами. Эти различия объясняются радиационно-стимулированным дефек…
Light extraction efficiency (LEE) is a very important factor for improvement in efficiency by Light Emitting Diodes (LED). As of now, most LEE improvement methods involve complex fabrication either on the finished LED chip or during the LED processing. In this study micro repeating structures (MRS) are fabricated usin…
We developed a new strategy of optofluidic analysis from inkjet-printed droplets on photonic crystal biosilica-diatom at nanoliter scales. The hydrophilic diatom surface could concentrate target molecules in the liquid droplets as the solvent evaporates, which enables 2,4,6-trinitrotoluene (TNT) detection down to 2.7×…
In the article, the results of the study of behavior of timber slab under influence of fire with the standard “time-temperature” curve are presented. The finite element method was used for it. For the calculation we constructed a grid models of timber slabs. As a result of solution of the thermal problem was obtained…
The solubility of aluminum sulfate in sulfuric aqueous solution was determined and analyzed thermodynamically. Aluminum sulfate dissolved in sulfuric acid aqueous solution not spontaneously, because the dissolution enthalpy is a positive value. The solubility of aluminum sulfate had a temperature dependency and hardly…
The electronic structure and elastic properties of the ternary layered carbide V3GeC2 were investigated by the first-principle plane-wave pseudopotential total energy calculation method based on density functional theory. It is found that the computed P63/mmc lattice constants and internal coordinates are a = 2.9636?,…
Plastics as packaging materials and coatings undergo increasing demands globally each year. This pose a serious problem to the environment due to its difficulty to degrade. One solution to addressing the problem of plastic wastes is the use of bioplastics. According to the European Organization Bioplastic, one of the…
Aragonite CaCO3 with complicated morphologies needle-like structrues have been successfully synthesized through dolomite as raw materials by the decomposition of urea. The phase of the aragonite whiskers were characterized by X-ray diffraction and Fourier transform infrared, the structrue of the samples was characteri…
镁及其合金因其具有在生物体内的可降解性、较好的生物相容性和优异的力学性能，因而被广泛研究应用于生物体的植入器件。然而，其过快的腐蚀降解速度以及由局部腐蚀导致过快的力学性能丧失等问题极大地限制了镁及其合金在临床中的应用。因此，本文利用液相沉积的方法在纯镁表面构建一层氨基三甲叉膦酸涂层。通过扫描电子显微镜(SEM)、傅立叶红外分析(FTIR)、X射线能谱仪(XPS)、电化学测试(PDP)以及长期浸泡实验对涂层进行表征。实验结果表明：氨基三甲叉膦酸涂层通过共价固定和螯合沉积的方式有效地构建在纯镁表面，暂态以及长期浸泡过程中明显提高了材料的耐腐蚀性能，且抑制了镁基体的局部腐蚀，增强了材料在长期服役过程中的稳定性。 Magnesium an…
Highly dispersed core–shell α′′-Fe16N2/SiO2 particles were prepared using hydroxyapatite (HAp) as the sintering prevention layer. HAp was effective as anti-sintering agent, and could be dissolved by solutions with wide pH range. The α′′-Fe16N2 phase was formed by reduction and nitridation, in spite of the presence of…
The experimental data on the end thickness variation of tubes produced by PRP-80 of “Sinarsky Pipe Plant” was analyzed. The data of length of thickened ends of rough and finished tubes are shown. The configuration of thickened ends was displayed as conical shape with rectilinear generators, and the linear regression e…
A freely cooling granular gas without any external force evolves from the initial homogeneous state to the inhomogeneous clustering state, at which the energy decay deviates from the Haff’s law. The asymptotic behavior of energy in the inelastic hard sphere model have been predicted by several theories, which are base…
We make use of recent extensions of kinetic theory of granular gases to include the role of particle stiffness in collisions to deal with pressure-imposed shearing flows between bumpy planes in relative motion, in which the solid volume fraction and the intensity of the velocity fluctuations are not uniformly distribu…
One of the main representatives of optical plastics is polymethylmethacrylate – PMMA, characterized good technological properties when processed by method of injection molding. Products made of PMMA have high construction and surface appearance properties, and light transmission of up to 92%, as a result of production…
The work is devoted to the overview of some technological features inherent in titanium and titanium alloys connected with specific physico-mechanical properties in the course of plastic deformation. All these features need to be considered when designing manufacturing techniques of products from titanium base alloys.…