Materials Literature
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The VIS-SWIR photosensing properties of Ge and GeSi NCs embedded in TiO2films are investigated. For this, we deposit GeTiO2and GeSiTiO2films, respectively by magnetron sputtering and then we perform rapid thermal annealing (RTA) for Ge NCs and GeSi NCs formation, respectively. Raman studies and spectral photocurrent m…
Electrical properties of a single verticallyoriented n-ZnO nanorod on a p-GaN substrate are investigated by measuring their current-voltage characteristics. The current-voltage characteristics are measured using nanoprobe in the high vacuum chamber of a scanning electron microscope. The observed changes of the resisti…
Algorithms for calculating the stress-strain state and residual stresses under complex loading are presented in this article. Residual stresses in the material affect the life and reliability of electromechanical equipment, so they should be taken into account in practical calculations. The presented algorithms allow…
In this paper, we demonstrate the effect of poly (lactic acid) surface modification by collagen native fibrils deposition on cell growth. Amount of cells was estimated by the fluorescence microscopy and MTT assay. The effect of hydrophilicity and the presence of collagen fibrils, as well as the importance of the colla…
In this study we show an approach to the synthesis of a new L-arginine grafted peptide-like biodegradable polymer. The compound is capable of decomposing in vivo into the initial monomeric molecules due to: sensitivity to the redox potential of the medium (disulfide bonds are present) and presence of enzyme labile pep…
In this study, CdS films prepared using the technique of pyrolysis spray at the glass and Si wafer with a thickness of 300 nm using Cadmium Acetate Cd (CH3COO)2·2H2O with purity of 99.6% and Thiourea (CS(NH2)2) with purity 99.6%. These compounds are used as the sourced materials of Cd+2 and S-2 ions, respectively for…
The applications of nano-core materials with doped external shell by para-amino-benzoic acid to construct an organic transistor are presented. The transistor adopts a typical configuration of an organic transistor, but using point contacts as a pseudo-MOS transistor. The device is prepared by Ag deposition on a glass…
This work shows the result of applying the prototype soft dosage form for external use, consisting of a sorbent, silver and gel base in a wound process. The experiment was carried out in vivo (rats, line Wistar), on a model of burn and scalp wounds. The indices of the thickness of the epidermis of the cicatricial regi…
Hypothesis: Poly(tetrafluoroethylene) (PTFE) powder, due to its low surface energy, reduces the friction of nitrile rubber (NBR) composite. Moreover, due to its chemical stability PTFE improves the resistance of the composite to oil solvents. Due to thermal stability, it can improve thermal resistance of rubber compou…
Hypothesis: Production of polyethylene (PE) of a relatively high molecular weight with improved properties and acceptable processability has been allocated to many research efforts. In the slurry polymerization, immobilization of homogeneous metallocene catalyst on a nano-sized support leads to improved mechanical and…
The interaction of ionizing radiations with living tissues could result in simple and complex single- and double-strand breaks in the cell DNAs, due to the physical and chemical processes that such radiations initiate. Monte Carlo simulation of the interaction between radiations and DNA renders valuable information ab…
Abstract The morphological and structural properties of Pd–CeO2/Al2O3 catalytic compositions annealed at 100, 500, and 1000°С are studied, along with thereof coatings deposited on metallic foil via cold gas dynamic spraying. The influence of the preparation technique of the initial catalytic composition and introducin…
In this article, the high-frequency multifunctional transformer mathematical model was considered, according to which its main parameters can be determined. It is established that, when designing multifunctional transformers for power supplies of electrotechnological installations, including induction heating, it is p…
To improve the performance of the direct-drive PMSM with toroidal windings (NTWDDPMSM) after shifting the magnetic poles (SMP), some design parameters such as the pole arc coefficient, permanent magnet magnetization height, air-gap length and slot opening width are selected as optimization variables, and the Taguchi m…
Considerable attention is paid to the influence of crosslink density and crosslink structures on behavior of polymer chains and properties of elastomers. However, a very important parameter seems to be underestimated: the modifications to the polymer chains by curatives, formed by sulfur and fragments of accelerators.…
A novel system for the estimation of eardrum temperature, utilizing neural networks, based on the data acquired from six sensors integrated on a wristwatch-type wearable device has been successfully demonstrated. The conventional estimation method, which uses a heat balance model of the body, cannot be applied as it n…
Phase Change Memory (PCM) is seen as a potential candidate that can replace DRAM as main memory, due to its better scalability. However, writing ‘0s’ in PCM cells requires high-temperature RESET operations, which induce write disturbance errors in neighboring idle PCM cells due to excessive heat dissipation. This pape…
Abstract Acoustic emission and differential scanning calorimetry have been used to study the structural changes and the thermal effects in a TiNi alloy after severe plastic deformation (SPD). The character and the thermal effect after SPD are shown to demonstrate partial amorphization of the alloy. The heat release ob…
This work describes a method for fabricating linear variable filter. Dielectric Bragg reflectors deposited silicon substrates were flip-stacked and supported by photoresist pillars. By adjusting resist coating parameters, pillar height as well as taper angle can be controlled. In the absence of processes on deposited…
Micro-fabricated sensors enable the study of chemical and physical dynamics in aqueous environments such as rivers, lakes or oceans at low cost. Sensors must work reliably in these environments, which include both biological and chemical challenges. However, sensor thin films have not been studied in detail for aqueou…