Materials Literature
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The formation of a short-range order in soft magnetic Fe-Si alloys depending on the annealing temperature has been investigated theoretically and experimentally. The B2-type short-range order has been observed in samples quenched from temperatures T > T C (where T C is the Curie temperature) with the content c Si clos…
The temperature coefficient of resistance (TCR) in V 1- x W x O 2 (VWO) with various W-doping levels and thicknesses were investigated on Al 2 O 3 (0001) single crystal substrates. The VWO thin films with an appropriate doping level ( x =0.015) showed high TCR over 10%/K just at room temperature (300 K), which was lar…
The inhibiting action of (+)-catechin hydrate on the corrosion of mild steel in hydrochloric acid has been studied. The results from weight loss, Tafel polarization and electrochemical impedance measurements consistently identify (+)-catechin hydrates as a good inhibitor. Polarization curves indicate that (+)-catechin…
In this paper, 1-3 composites based on Pb(In(1∕2)Nb(1∕2))-Pb(Mg(1∕3)Nb(2∕3))-PbTiO(3) (PIMNT) single crystal and high-temperature epoxy were fabricated with various volume fractions of PIMNT single crystal ranging from 0.4 to 0.9. The electrical properties were studied as functions of PIMNT volume fraction and tempera…
The surface treatment with boiling hydrogen peroxide (H2O2) solution on the surface of ZnO nano-columnar film was investigated. Field emission-SEM and TEM analysis revealed that amorphous ZnO2 layer covers the ZnO nano-column surface through the H2O2 treatment at 100°C for 1 min. X-ray photoemission spectroscopy (XPS)…
Measured absolute optical absorption cross sections of 2–6 nm Ge nanocrystals embedded in SiO2 in the near-infrared–ultraviolet spectral range are reported. Thin layers of Ge sandwiched between SiO2 layers were prepared in a multilayered configuration, which upon heat treatment at 800 °C led to multilayers of Ge nanoc…
A comprehensive review of recent literature on high strength, fine grained steels has been conducted. While relevant technologies in alloy design, processing and heat treating are included in the present review, the emphasis has been on high carbon steel wire processing technology that can be achieved with ‘convention…
This review presents a synopsis of the development of cationic zinc and magnesium metal complexes as catalysts for the polymerization of lactones, with the major focus being directed toward the polymerization of lactide. By utilizing an electron-rich, neutral bis(phosphinimine) pincer ligand, cationic complexes with h…
The following article is a personal, and probably self-indulgent, review of the development of the classification of tilted octahedra in perovskite structures and my role in it. This review is not intended to be a thorough account of the topic, which has in any case been covered elsewhere, but is offered as a historic…
Polyaniline-poly(acrylic acid-co-maleic acid) (PANI-PAMA) with a nanowire network structure is prepared using a doping-dedoping-redoping route. Platinum (Pt) particles are deposited into PANI and PANI-PAMA nanowire network structures via a potentiostatic process to obtain PANI-Pt and PANI-PAMA-Pt composite electrodes,…
A biosensor device, built from graphene nanoribbons (GNRs) with nanopores, was designed and studied by first-principles quantum transport simulation. We have demonstrated the intrinsic transport properties of the device and the effect of different nucleobases on device properties when they are located in the nanopores…
The so-called metamagnetic shape memory alloys transform from a ferromagnetic austenite into a weak magnetic martensitic phase, thus the application of a magnetic field, stabilizing the high magnetization phase, can induce the reverse martensitic transformation. Moreover, the martensitic transformation itself becomes…
This study examines the production of linear low density polyethylene (LLDPE)/soya powder blends to be used as alternatives to cellulosic material/polyolefin blends. LLDPE was blended with soya powder in a Haake internal mixer by melt mixing. Composition of the soya powder was varied from 5 wt% to 40 wt%. Polyethylene…
The crystal structure and spectral properties of new Zn(ii) chelate complex with bis(2,4,7,8,9-pentamethyldipyrrolylmethen-3-yl)methane were determined by single-crystal X-ray diffraction, 1H NMR, UV and IR spectroscopy; a sufficiently high quantum yield of fluorescence in nonpolar solvents, a long-wavelength emission…
Candle wax has been used as a precursor for the production of carbon nanomaterial without a catalyst precursor. Nanomaterials formed in the process were analysed by Raman spectroscopy, scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), high resolution transmission electron microscope (HR-TEM) an…
Several double perovskite materials of the form A 2 BB'O 6 exhibit high ferromagnetic T c , and significant low-field magnetoresistance. They are also a candidate source of spin-polarized electrons. The potential usefulness of these materials is, however, frustrated by mislocation of the B and B' ions, which do not or…
Industrial wood particles used for manufacturing three-layers particleboards were employed to prepare wood/PE-LD composites by an injection molding process. The effect of particle size (sieve analysis 0.25-0.5, 0.5-1, 1-2, and 2-4 mm) and of specimen cross-section size (40, 90 and 160 mm2) on the mechanical properties…
Thermally conductive composite film was obtained from silicon carbide (SiC) and linear low-density polyethylene (LLDPE) by powder mixing and hot press molding. SiC powder distributions were found to be relatively rather uniform at both low (20 wt.%) and high (60 wt.%) filler content. The effect of the content and the…
Semiconductor quantum dots (QDs) are used to dope wide-bandgap chalogenide glasses via sol-gel processing. Such chalcogenides enhance surface passivation of the quantum dots, as evidenced by the increased PL emissions of both core and core shell species used, while a ZnO glass leads to irreversible oxidation of the em…
The prism coupling technique has been utilized to measure the refractive index in the near- and mid-IR spectral region of chalcogenide glasses in bulk and thin film form. A commercial system (Metricon model 2010) has been modified with additional laser sources, detectors, and a new GaP prism to allow the measurement o…