Materials Literature
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This paper presents an initial investigation on the effect of an external magnetic field on partial discharge (PD) characteristics of voids in solid dielectric media, with a particular focus on statistics parameters derived from the classic phased-resolved patterns. Although it has long been known that high magnetic f…
We present a novel carbon nanotube gas sensor based on a suspended and ultraclean carbon nanotube transistor. The transistor shows no apparent hysteresis under ambient conditions, thus reducing the drift of the sensor signal due to charging effects. Structural characterization with TEM shows the presence of one single…
Rubber nanocomposites containing different concentrations of ferroelectric and paramagnetic nanoparticles were fabricated. Nanostructures of ferroelectric potassium strontium niobate and paramagnetic nickel-zinc ferrite were synthesized using a modified polyol method. The nanoparticle characterization was carried out…
A brief review of data for the influence of helium on the hydrogen sorption and mechanical properties of nickel and 12Kh18N10T steel is presented. When in the metallic matrix, helium considerably deteriorates the ductility of these metals. It is shown that 3 He present in 12Kh18N10T steel generates high-energy hydroge…
Solving the buckling problem for a battened column as a statically indeterminate structure yields a Euler critical load that is significantly higher than the buckling load being obtained on the basis of Engesser’s assumption. The stability problem is reduced to numerically solving a two-point boundary value problem fo…
Poly(o-methoxyaniline)-multiwalled carbon nanotube (POMAN-MCNT) films are deposited onto Platinum (Pt) electrodesusing cyclic voltammetry (CV) methods. Pt nanoparticles are deposited onto the POMAN-MCNT film to form a Pt/POMAN-MCNTs coating under galvanostatic conditions. The morphology of the Pt/POMAN-MCNT composite…
Biobased thermoplastics, such as poly(lactic acid), have attracted much attention in recent years as an alternative to oil-based plastics both in academia and industry. Based on renewable raw materials these polymers offer advantages in terms of decreased dependence on fossil resources and reduced CO2 footprint in acc…
Thin metal films of Ag (~10 nm) deposited on spin coated PVC film on quartz substrate, were irradiated with 150 keV Ar ions at fluences varying from 5×10 15 to 5×10 16 ions/cm 2 and characterized with Rutherford backscattering spectrometry (RBS), atomic force microscopy (AFM), scanning electron microscopy (SEM) and en…
Irradiation effects of 8 MeV electrons on photoluminescence properties of thioglycolic acid (TGA) capped CdTe quantum Dots (QD) are presented. Steady-state and time-resolved photoluminescence (PL) spectroscopy were used for anlayzing PL properties of both irradiated and unirradiated quantum dots. The Photoluminescence…
Dilute alloys based on ferromagnetic bcc iron modified by 3 p (Al, Si) and 4 p (Ga, Ge) elements are studied using the methods of the density-functional theory. It is shown that the local deformations and solution energies depend on the position of an alloying element in the periodic system. The nature of Fe- X chemic…
The electro-optic properties of cholesteric blue phase (BP) liquid crystals is investigated by two-beam interference microscopy. The technique can facilitate the evaluation of BP materials, since only a single measurement is required to determine the two important electro-optic coefficients, i.e., the Kerr and electro…
Low Voltage (LV) AC cables are predominant in distribution networks across the world. The possibility of transforming such networks to DC may hold significant advantages and it is widely being considered. In particular it may allow a greater flow of electrical energy within urban areas, allowing adoption of electrical…
A comparative study was carried out on the load-dependent indentation behavior with respect to hardness and induced cracks of β-SiAlON and α-silicon carbide ceramics. It is observed that silicon carbide (SiC) exhibits lower transition load, early cracking and severely crushed indentation sites, whereas β-SiAlON shows…
Precipitation on rough walls under a channel flow of a supersaturated fluid can lead to dendrite pattern formation. A passive advection of a solute has a great influence on the dendrite morphology similar to the convection effect on the solidification dendrites emerging from an undercooled liquid. We show how the asym…
The paper presents the experimental results on a 15kV composite insulator for outdoor functioning on distribution systems. An Aging study is performed on 15 kV polymeric insulators using a rotating wheel dip test according to the ANSI C29.13-2000 standard for distribution dead-end type polymer insulators. Based on the…
Hexagonal NbSe 2 nanoplates have been successfully prepared via solid‐state reaction by a ball‐milled mixture of Nb and Se powders. The as‐prepared products are characterised by an X‐ray diffractometer, scanning electron microscopy and transmission electron microscopy. The results showed that the NbSe 2 nanoplates hav…
The influence of ageing and Equal Channel Angular Pressing (ECAP) on the microstructure and mechanical properties of Mg-2.5%Tb-0.78%Sm alloy has been examined. The microhardness changes during ageing at 200ºC show a slight increase. The aged microstructure at maximum hardness contains Mg 12 (Tb,Sm) - metastable β’ pha…
Sm0.5Nd0.5NiO3 (SNNO) films with metal-insulator transition (MIT) at room-temperature (∼300 K) have been grown on NdGaO3 (001) substrates by pulsed laser deposition. By modifying the parameters of oxygen pressure, substrate temperature, and film thickness, the role of oxygen vacancies and strain relaxation on the MIT…
A renewable energy hybrid power plant, fed by photovoltaic (PV), wind turbine (WT), and fuel cell (FC) sources with a supercapacitor (SC) storage device and suitable for distributed cogeneration applications, is proposed herein. The PV, the WT, and the FC are used as the main source; and the SC functions as an auxilia…
Abstract Novel golf-ball-like polystyrene (PS) microspheres were obtained through γ-ray-radiation-initiated polymerization of styrene (St) monomers in a Pickering emulsion stabilized by amphiphilic snowman-like PS Janus microspheres, which were synthesized via seed emulsion polymerization of St swollen in poly(acrylic…