Materials Literature
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Introduction: Nanoparticles of silver have many important applications and are among the most commonly used nanomaterials. They are increasingly used in a variety of both medical and consumer products which includes: spectrally selective coating for solar energy absorption and intercalation material for electrical bat…
Adaptive circuits are essential for the design of multi standard and reconfigurable radios. Ferroelectric thin film technology has demonstrated its advantages for the design of varactors and more recently, switchable and tunable bulk acoustic wave (BAW) resonators and filters. Some important performance characteristic…
Gassing problems and premature insulation failures of wind turbine transformers have been documented lately, indicating concerns with insulation reliability of power electronic converter-fed devices. This fact shows that the transformer insulation system degrades under high dV/dt voltages generated in wind energy plan…
In this study, Zinc Oxide nanoparticles (ZnONPs) were synthesized by chemical method and their antibacterial efficiency against a clinical isolate of Staphylococcus aureus was studied. The Zinc Oxide nanoparticles have shown a commendable inhibition effect on the growth of most notorious bacterial pathogen S.aureus. T…
A versatile and heretofore unutilized coupling is obtained by press-fitting a hollow nickel titanium shape memory alloy (SMA) shaft into a steel hub. This produces an SMA interference coupling that is distinct from other SMA actuators by the method in which the SMA is used. Press-fitting the hollow SMA shaft in its de…
Glass composites containing percolated segregated networks of conducting antimony tin oxide ( ATO ) nanoparticles were fabricated through the use of a hot‐pressing technique, which resulted in glass microspheres deforming into faceted polyhedra with the ATO located at the edges. Once the ATO percolated, it was shown t…
A gripping capability was designed, implemented, and tested for in situ neutron diffraction measurements during multiaxial loading and heating on the VULCAN engineering materials diffractometer at the spallation neutron source at Oak Ridge National Laboratory. The proposed capability allowed for the acquisition of neu…
A model for studying the mechanical internal stresses into dielectric materials is developed in the present work. The model takes into account the formalism of inclusions in continuous media. The dielectric material is assumed to be partitioned in different cubes which form a sizeable bulk material in such a way that…
The green synthesis consists of an environmentally friendly method of producing gold nanoparticles (AuNP's). Physical and chemical syntheses have energy intensive and may involve toxic chemicals, while biological techniques are cost-effective, clean, non-toxic and environmentally appropriate. Virola oleifera is widely…
The effect of Cu addition on structure and mechanical properties of the gray cast iron is studied. Copper is showed to affect the graphitization process. Copper content increase up to 6 ... 7 wt. % reduces the depth of the chill layer.With further increase of coppercontent the alloys tendency to chilling effectincreas…
With the development of alternative energy research, the technology of energy storage devices has become crucial. The world is focusing on the advancement of electrochemical capacitors (ECs) or supercapacitors as one of the best energy storage devices. This paper presents the fabrication of ECs using a combination of…
Nanocrystalline powders of ZnAl2O4 and CdSe were prepared via mechanochemical synthesis. Powder slurries were coated as thin lms on SiO2 thin layer chromatography (TLC) sheet by capillary method. The photocatalytic activity of the lm coating was tested in a self-made gas-phase at-plate continuous-ow photocatalytic rea…
The structure and hardness of a molybdenum single crystal with an (110) orientation, which was deformed by high pressure torsion at 290 and 80 K, are investigated. Such deformation mechanism as dislocation slip that is characteristic of materials with a high stacking fault energy works also during cryogenic deformatio…
The mechanism of an increase in the phase transition temperature of a ferroelectric-dielectric nanocomposite above the corresponding temperature of an unbounded homogeneous ferroelectric has been revealed. The significant thermal stresses induced in the composite material due to the difference in the thermal and elast…
The paper considers the application of multiscale inelastic deformation models of crystal plasticity theories to the description of experimental effects observed in single- and polycrystals under complex loading. In particular, as an example, a two-scale inelastic deformation model of polycrystalline metals is applied…
X-ray phase analysis, thermogravimetry, and volumometry were used to study the mechanochemical synthesis of zinc oxide. The conversion of metallic zinc was calculated in relation to the time and method of mechanical activation and to the oxidizing medium used. The most optimal conditions of oxidation of metallic zinc…
This paper presents a highly sensitive dedicated sensor that selectively measures nitrate ions. Nitrate-selective electrode of the three-electrode electrochemical sensor is formed by modifying the working electrode of the sensor with a novel nanofibrous mat made of conductive polypyrrole nanofibers. The nanofibers are…
Components based on carbon‐bonded alumina refractories are widely used in steelmaking industry in terms of submerged entry nozzles, monoblock stoppers, and ladle shrouds. According to the current state of the art, such components are glazed to inhibit oxidation of carbon‐containing refractories. Carbon oxidation leads…
Non-polar coexisting m -plane ( ) and a -plane ( ) zinc oxide (ZnO) thin films have been synthesized onto commercial silicon (100) substrates by using plasma enhanced chemical vapor deposition (PECVD) system at different working pressures. The effects of the working pressure on crystal orientation, microstructure, sur…
Abstract The copper‐catalyzed alkyne azide cycloaddition (CuAAC) reaction was combined with sol‐gel reactions for the production of bridged silsesquioxanes (BSs) in which hexyl and icosanyl chains are pendant and anchored on a single position to a triazole ring. The influence of the alkyl chain length on the structure…