Materials Literature
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Long-term research results on the structural condition of heat-resistant coatings based on iron, nickel and cobalt aluminides applied to gas turbine blades by diffusion methods or spraying, as well as on their degradation and damageability under operational conditions, are presented. Peculiarities of the formation of…
We demonstrate an electrochromic device (ECD) with high optical density and fast response time. The fabricated ECD shows an optical density of 1.7 at 600 nm and the fastest response time of 1.4 sec. The ECD with a transparent OLED panel exhibits a transmittance of 62.9 % at 550 nm. The transmittance of transparent OLE…
In the recent years, displays for mobile electronic devices have been revolutionized, mostly driven by smartphones and tablets. Strongest trends are (besides growing sizes) the ever‐increasing resolution, improved contrast, very good viewing angle and color performance. This went hand in hand with a trend to more “ref…
In this work, a detailed field emission study of multi-walled carbon nanotubes (MWCNTs) grown on Si and Al coated Si substrates is reported. Morphological and microstructural studies of the films show higher entanglement of CNTs in the case of CNT/Si film as compared to CNT/Al/Si film. Raman studies show that the defe…
Anticipating a push towards circuit applications of field-effect transistors (FETs) with two-dimensional (2D) semiconductors like MoS2, there is a growing need to evaluate such devices at a circuit level. However, early 2D FET models have been either too idealistic or did not address circuit simulation. Here we descri…
Silicene is the silicon counterpart of graphene, that is, it consists of a single layer of Si atoms arranged in a hexagonal network. This new two-dimensional material, first predicted by theory, has been recently grown on different metallic surfaces.1, 2, 3 An obvious advantage of silicene (over graphene) for nanoelec…
The micro-galvanic corrosion of SiC reinforced 6061 Al alloys deprives its potential application in the acidic conditions or at high temperatures. Therefore, the corrosion behavior of 6061 Al—15 vol. pct. SiC (p) composite in HCl medium at different temperatures was studied using electrochemical impedance measurements…
x Pb ( In 1/2 Nb 1/2) O 3- Pb ( Mg 1/3 Nb 2/3) O 3- PbTiO 3(x PIN –y PMN –z PT ) ternary ceramics with morphotropic phase boundary (MPB) composition were synthesized by columbite precursor method. x PIN –y PMN –z PT phase diagram was investigated by x-ray diffraction and dielectric measurements. According to the resul…
INTRODUCTION: Dendrimers are synthetic macromolecules with well-defined structures bearing a wide variety of functional groups on their periphery. These groups can be used to conjugate bioactive molecules such as drugs, ligands and imaging agents. Dendrimer prodrugs can be used to improve the water solubility and phar…
A high-programming-throughput three-dimensional (3D) vertical chain-cell-type phase-change memory (VCCPCM) array for a next-generation storage device was fabricated. To increase the number of write cells at one time by reducing resistance of bit and source lines, the VCCPCM array includes plate electrodes and double-g…
Tetradentate (1E,2E,1′E,2′E)-3,3′-bis[(4-bromophenyl)-3,3′-(4-methy-1,2-phenylene diimine)] acetaldehyde dioxime which possess N 4 donor sets derived from the condensation of isonitroso- p -bromoacetophenone and 3,4-diaminotoluene are synthesized and characterized. The characterization of tetradentate Schiff base liga…
Abstract A polycrystalline sample of ceramic oxide Ni0.27Cu0.10Zn0.63Fe2O4 was prepared by the solid state reaction method. The sintered sample was well polished to remove any oxide layer formed during sintering and the two surfaces of the pellet were coated with a silver paste as a contact material. Among dielectric…
The electric field-induced method is proposed to orient montmorillonite (MMT) in low-density polyethylene (LDPE) and improve the electrical tree resistance of LDPE. A new orientation setup for electrical inducement was designed to achieve MMT orientation in the LDPE/MMT composite. The effect of electrically induced or…
In this paper, a model is developed to incorporate the magnetic hysteresis effects into a brushless exciter model. The developed model reconstructs the magnetization flux linkage current loops using the Energetic hysteresis model. The model requires measurements from the armature and field terminals of the brushless e…
The macroscopic electromechanical behavior of lead-free bilayer composites was characterized at room temperature. One layer consisted of a nonergodic relaxor, (Bi1/2Na1/2)TiO3-7BaTiO3, with an electric-field-induced longrange ferroelectric order, whereas the other is understood to be an ergodic relaxor [(Bi1/2Na1/2)Ti…
A global model of heat transfer, including melt convection, solid conduction, surface radiation, and crystal internal radiation, as well as phase change, is established for a sapphire crystal growing system by a heat exchanger method. Global simulations are carried out to investigate the effects of crucible location o…
In this article, the tensile strength, fracture strain and elastic modulus of graphene sheet (GS) containing randomly distributed vacancies are investigated using molecular dynamics simulations, and the effects of temperature and vacancy defect on these mechanical properties are analyzed. The presences of defects dram…
Abstract Grain growth kinetics in 0.1 to 2 mol % B2O3-added ZnO ceramics was studied by using a simplified phenomenological grain growth kinetics equation Gn = K0 · t · exp(-Q/RT) together with the physical properties of sintered samples. The samples, prepared by conventional ceramics processing techniques, were sinte…
A thin-film array-based thermoelectric energy-harvester (TEH) is assembled in a 0.83cm2footprint and attached to a power management unit integrated in 65nm CMOS. A single-inductor topology with analog maximum-power-point tracking leads to a 68% peak end-to-end efficiency and <;20ms tracking time. A 645μW regulated out…
This is the third part of the volume devoted to solubility data for the rare earth metal (REM) fluorides in water and in aqueous ternary and multicomponent systems. It covers experimental results of trivalent fluorides of Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu (so-called heavy lanthanides), since no quantitative data on s…