Materials Literature
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In this paper, the inverter switch losses of BLDC motor for three types of PWM methods and power devices were analyzed. When the BLDC motor is driven at low currents, the inverter switch losses for MOSFET are low because MOSFET operates like resistance. However, the inverter switch losses for IGBT are higher than MOSF…
The historical reliance of thermoelastic stress analysis on cooled infrared detection has created significant cost and practical impediments to the widespread use of this powerful full-field stress measurement technique. The emergence of low-cost microbolometers as a practical alternative has allowed for an expansion…
This study examines the correlation between the chemical, electronic and optical properties of a nanocrystalline silicon thin film fabricated by hot‐wire chemical vapour deposition. The locations of porosity and the incubation layer of the thin film can be monitored by tracking the SiH2 and SiH signals, respectively,…
Since the discovery of its photovoltaic properties organometallic salt CH$_3$NH$_3$PbI$_3$ became the subject of vivid interest. The material exhibits high light conversion efficiency, it lases in red color, and it can serve as the basis for light emitting diodes and photodetectors. Here we report another surprising f…
An integrated ormocomp nanowire coated with gold metal layer is proposed and its optical characteristics with the effect of surface plasmon resonance (SPR) are studied. The integrated rib-like nanowire has a trapezoidal shape with sidewall angles of 75°. It is coated with 50 nm gold layer to introduce the SPR and enha…
In recent years, high interests has emerged to use natural fibres as alternative reinforcements synthetic due to its unique benefits regarding renewability, recyclability, degradability, lightweight, and low cost. Recent investigations revealed that the mechanical performance of fibre reinforced polymer composites (FR…
Abstract A growing body of evidence showed that flow rutting and inter-layer slippage in asphalt pavements at intersections and large longitudinal slopes is directly related to the capacity of the asphalt mixture to resist shear flow deformation. This study used fractal theory to analyze the microstructures of asphalt…
Cutaneous wound healing is a highly complex biological process. The main goal of wound healing is to re-establish skin homoeostasis and integrity and the ‘multilevel’ cutaneous barrier functions (e.g. physicochemical, immunological, biological). The physiological, regenerative-rejuvenating wound healing procedure cont…
Abstract Diffusion processes at high temperatures can change the transmittance and reflectance curves of multilayer coatings. These changes can significantly degrade coatings which use optical interference to obtain specific optical properties. This paper describes a study of the oxygen diffusion in SnO 2 /Sst interfa…
nsanlar var olduu gnden beri taklar gerek inan, sihir, korunma gerekse sslenme amac ile kullanlmtr. Deien ve gelien alarla birlikte tak olgusu da deiim gstermi ve her dnem farkl
In this paper, tuning electrical conductivity of benzene-1,4-dithiol (M0) has been done through sequential substitute of the CH groups by nitrogen atoms in the molecular skeleton of the benzene ring and constitutional isomery. I-V characteristics of seven derivatives of M0 using nonequilibrium Green's function (NEGF)…
To popularize scientific achievements the main results of Russian and foreign scientists' research are published in the form of abstract. The authors of the research Fine-grained basalt fiber concrete with nanosilica showed that joint introduction of silica and basalt fiber additives into fiber concrete enhances freez…
Figure 2.1 Illustration of a monomer and several types/forms of polymers. Polymers are mainly used for their structural properties, be it the elasticity of plastic food wrap or the hard yet light and easily moldable plastic parts in a car. The idea of utilizing the electrically conducting properties of polymers was pr…
Abstract V18P9C2 crystallizes in the orthorhombic space group Pmma with the lattice parameters a = 17.044(3), b = 3.2219(7), and c = 13.030(2) Å, Z = 2. The crystal structure is composed of 19 symmetry-independent atoms. The crystal structure is considered as a network formed by the transition metal atoms exhibiting c…
Mg alloys have been applied widely as structural materials over the past decades, with low density, high specific strength, stiffness, specific elastic modulus, and high recycling rate. However, their features of poor ductility and formability at room temperature have limited their application due to hexagonal close-p…
Figure 8.1 Discharge voltage curve under continuous and pulse load conditions. 8.2.2 Charge “Capacity”Charge capacity is the charge that is stored in the electro-active materials of the electrodes. The real value is defined by the electrode having the lower charge. The charge is also reduced when the electro-active ma…
The analysis of the Burgers model used for the constitutive description of the technical fabric VALMEX vis-coelastic behavior is presented. It has revealed that the correctness of the identification depends strongly on the level of the immediate strain taken for calculations. Moreover, it has been proven that the Burg…
The SOFC interconnect materials La[Formula: see text]Sr[Formula: see text]Cr[Formula: see text]O[Formula: see text] [Formula: see text]–[Formula: see text] were prepared using an auto-ignition process. The influences of Cr deficiency on their sintering, thermal expansion and electrical properties were investigated. Al…
In this study, we investigate the homogeneous nucleation kinetics of copper and nickel system during cooling process using molecular dynamics simulation (MDS). The calculation is carried out for a different number of atoms consisting of 500, 2048, 8788 and 13,500 based on embedded atom method (EAM). It is observed tha…
The cyclic stress–strain constitutive relationships for copper film smooth specimens with different damage degrees before and after laser irradiation treatment were investigated. Compared with the changes of the constitutive relationships under different damage degrees, a healing variable for the repaired copper film…