Materials Literature
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Negative refraction is the name for an electromagnetic phenomenon in which light rays are refracted at an interface in the reverse sense to that normally expected. A uniaxial anisotropic plasma metamaterial that exhibits negative refraction is demonstrated and the necessary conditions are derived for negative refracti…
Candidate coating materials for re-usable metallic nuclear fuel crucibles, TaC, TiC, ZrC, ZrO2, and Y2O3, were plasma-sprayed onto a niobium substrate. The microstructure of the plasma-sprayed coatings and thermal cycling behavior were characterized, and U-Zr melt interaction studies were carried out. The TaC and Y2O3…
Partial discharge measurements performed on varnished coils (motorettes) subjected to both repetitive square and sinusoidal voltage waveforms at reduced atmospheric pressures are presented. The aim of the investigation is understanding whether partial discharge monitoring of commercial aircraft actuators is feasible o…
Electrospinning is conducted with polylactic acid (PLA) and tea polypheno (TP) to obtain PLA/TP composite nanofibrous films with high antimicrobial activity. An investigation of the composition, antimicrobial activity, and mechanism of these composite nanofibrous films was conducted by using infrared spectroscopy (FT-…
This paper describes the aging performance of high-temperature vulcanized silicone rubber (HTV-SiR) resulting from a 2000h UV radiation exposure and a sand-blow test. In this study, HTV-SiR specimens were respectively exposed to an UV exposure chamber and a sand-blow chamber; furthermore, physicochemical analyses were…
Three-dimensional flower-like α-Fe2O3 structures were grown on the surface of ordered mesoporous carbon nanorods through a facile hydrothermal method, and their electromagnetic (EM) parameters were measured at 2–18 GHz. The special geometric morphology and proper magnetic loss of α-Fe2O3 nanoparticles and the strong d…
A novel empirical potential has been developed to evaluate the thermodynamic stability of Ni(1-x)Fe(x)Cr2O4 spinels. The simulations confirm the hypothesis that the NiCr2O4-FeCr2O4 pseudo-binary has normal structure spinel up to 1000 K and stabilizes as a solid solution. However, the disordering energy (normal to inve…
Cover: The fabrication of polyelectrolyte nanofibrous scaffolds from aqueous polymer solutions through a simple and versatile green electrospinning process is presented. The generation of different architectures under various spinning conditions and the application of polyelectrolyte scaffolds from polysaccharides and…
Quantum dots (QDs) have received much attention for biomolecule and cell imaging applications because of their superior optical properties such as high quantum efficiency, size-tunable emission, and resistance to photobleaching process. However, QDs that are commercially available contain cadmium (Cd), a highly toxic…
Hydrogen isotope partitioning (as H 2 O and D 2 O) between silicate-saturated aqueous fluid and water-saturated aluminosilicate melt has been determined with vibrational spectroscopy (Raman and infrared) in situ with the samples at high temperature and pressure by using a hydrothermal diamondanvil cell (HDAC) for samp…
Nano-science coupled with nano-technology has emerged as possible cost-cutting measure to prodigal farming and environmental clean-up operations. It has ushered as a new interdisciplinary field by converging various science disciplines, and is highly relevant to agricultural and food systems. Environmental Protection…
The aim of this study was evaluate, two methods for the detection and identification of sulphate reducing bacteria (SRB): ML medium and PCR with specific primers for SRB groups. SRB were detected through the selective medium only on carbon steel, which showed corrosion. Employing specific PCR primer, SBR were detected…
The dependence of the electric resistance R of nanoperforated graphene samples on the position of the Fermi level E F, which is varied by the gate voltage V g, has been studied. Nanoperforation has been performed by irradiating graphene samples on a Si/SiO2 substrate by heavy (xenon) or light (helium) ions. A series o…
Electrical tree is recognized as one of the pre-breakdown phenomena that occurs in high voltage insulation material. In addition, under high divergent field, the electrical tree grows rapidly and severely which may cause the breakdown of insulation to occur. In view of foregoing, nano-filler was added into the base in…
Pure and cobalt doped (x = 0.05, 0.10, 0.15 mol %) polycrystalline potassium hexatitanate (K2Ti6O13) ceramics were synthesized using conventional solid state reaction route. XRD result confirmed the successful doping of Co in the K2Ti6O13 matrix, as no additional peak was observed in the pattern. Dielectric permittivi…
This paper presents several general properties of systematic absences that are available before unit-cell parameters and the space group have been determined. The properties are given in the form of distribution rules of Miller indices corresponding to systematic absences on a topograph. A topograph is a graph whose e…
A separate description of polymorphs and glassy, liquid, and gaseous states makes it possible, using the isobaric-isothermal potential minimization approach, to describe both the phase transformations of an individual substance and its behavior in complex systems, which is required for the representation of metal and…
An application of a functionally graded material (FGM) to the solid spacer in gas insulated switchgears (GISs) can reduce the electric field concentration at the specific region, for example, the anode or the interface between the spacer and the gas. However, the electric field stress near the triple junction of the g…
The impact of corrosive sulfur on high value assets such as transformers is widely reported and can be considered a global problem. A great deal of research and development is focused on the remediation of corrosive transformers and the mitigation of future corrosion. Regeneration of aged and or corrosive oil by filtr…
We conduct systematical cathodoluminescence study on red-shift of near-band-edge emission energy in elastic bent ZnO nanowires with diameters within the exciton diffusion length (∼ 200 nm) in liquid nitrogen temperature (81 K). By charactering the emission spectra of the nanowires with different local curvatures, we f…