Materials Literature
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We report on experimental results on multiple action of hydrogen, deuterium, and helium plasmas produced by a plasma gun and the Globus-M tokamak on tungsten. The surface temperature in the course of irradiation is measured with a bichromatic pyrometer with a time resolution of ⩾1 μs. The morphology of the surface lay…
For the first time, images of both ions and electrons appearing on a fluorescent screen attached to a micro-channel plate (MCP) [S. Nakata et al., "Applicability of micro-channel plate followed by phosphor screen to charged particles," Rev. Sci. Instrum. (submitted)] were captured in one attempt. The profile of electr…
Investigation of the activating effect of low-frequency ultrasonic waves on both fiber-forming polymer and chemicals and reagents used in bleaching processes of textile materials is an important objective. Comprehensive experimental studies on determination of the ratio of the treatment time and power of ultrasonic wa…
We apply the Heyd-Scuseria-Ernzerhof hybrid functional calculation to study the (2, 3) nanotube co-doped with various compositions of nitrogen and boron atoms. We find that the bandgaps and other properties of doped nanotubes oscillate with the doped compositions. Our study should shed light on the understanding of th…
We have developed processes for the fabrication of SiO 2 –TiO 2 composites containing crown ethers (CEs) with composite: CE weight ratios from 1: 0.06 to 1: 1. As oxide sources, we used titania and silica sols. The composites were characterized by differential thermal analysis, X-ray diffraction, and adsorption gravim…
The collective dynamics in liquid water is an active research topic experimentally, theoretically and via simulations. Here, ab initio molecular dynamics simulations are reported in heavy and ordinary water at temperature 323.15 K, or 50 C. The simulations in heavy water were performed both with and without dispersion…
The authors present a new low-temperature nanowire fabrication process that allows high-aspect ratio nanowires to be readily integrated with microelectronic devices for sensor applications. This process relies on a new method of forming a close-packed array of self-assembled high-aspect-ratio nanopores in an anodized…
Magnetic nanocomposite material composed of silica coated MgFe 2 O 4 for potential biomedical applications were synthesized by a two-step chemical method including solution combustion synthesis, followed by silica coatings of the ferrite nanoparticles. The effects of silica coatings on the structural, morphological an…
Abstract The reinvestigation of the pseudo‐binary systems M Br–BiBr 3 ( M = Rb, Cs) revealed two new phases with composition M Bi 2 Br 7 . Both compounds are hygroscopic and show brilliant yellow color. The crystal structures were solved from X‐ray single crystal diffraction data. The isostructural compounds adopt a n…
Processivity is essential for cellulases in their catalysis of cellulose hydrolysis. But what drives the processive move is not well understood. In this work, we use Trichoderma reesei Cel7B as a model system and show that its processivity is directly correlated to the binding free energy difference of a cellulose cha…
We have studied the structural and electronic properties of a hybrid hexagonal boron nitride with phosphorene nanocomposite using ab initio density functional calculations. It is found that the interaction between the hexagonal boron nitride and phosphorene is dominated by the weak van der Waals interaction, with thei…
Tissue-engineered heart valves represent a promising strategy for the growing need for valve replacements in cardiovascular medicine. Recent studies have shown that adipose-derived stem cells (ADSC) are a viable cell source, as they are readily available in both the young and the elderly, show diverse differentiation…
Abstract A new 0D iron‐based magnetic chalcohalide, Ba 3 FeS 4 Br, has been prepared by the spontaneous crystallization method. It crystallizes in the orthorhombic space group Pnma . Interestingly, the structure contains a Ba–Br reticulate structure in which isolated FeS 4 tetrahedra are located. Its band gap was expe…
Abstract Soluble polyphosphide anions were successfully generated in a number of organic solvents by the reaction between shelf‐stable red phosphorus and potassium ethoxide. The species were identified by 31 P NMR spectroscopy in solution and by X‐ray crystal‐structure determination of (Bu 4 N) 2 P 16 in the solid sta…
The usage of innovative lightweight materials and processing technologies gains importance in manifold industrial scopes. Especially for moving parts and mobility products the weight is decisively. The aerospace and automotive industries use light and high-strength materials to reduce weight and energy consumption and…
The structure, IR absorption spectra, morphology, and spectral characteristics of compounds Lu1 – x – y Ce x Tb y BO3 have been investigated. It has been shown that the Tb3+ luminescence excitation spectrum of the Lu1 – x – y Ce x Tb y BO3 compounds is dominated by a broad band coinciding with the excitation band of C…
In this work, a method (based on Peltier effect) is used to improve power efficiency for photovoltaic panel by using the wasted heat energy emitted by cars' exhaust systems. Thermoelectric cooler (TEC) and thermoelectric generator (TEG) modules are used to cool down and therefore improve the efficiency of solar panels…
The results of solving the problem of determining the implementation of combined rolling–pressing (CRP) are presented. Components of the total power for the process under study are written in the analytical form, they are calculated with the help of the computer program, and the influence of separate factors on the CR…
The molar heat capacity of BiVO4 has been measured in the range 356–980 K by the differential scanning calorimetry method. There is an extreme point in the C p = f(T) curve at about T = 532 K, which is caused by the existence of a phase transition. The thermodynamic properties of bismuth orthovanadate have been determ…
The optical properties of a composite material consisting of a thin polymer film, which is activated by semiconductor CdSe/ZnS quantum dots (QDs) and silver nanoparticles, on a transparent dielectric substrate have been investigated. It is revealed that the presence of silver nanoparticles leads to an increase in the…