Materials Literature
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Recently, graphitic carbon nitride (g-C3N4) has been investigated as a photocatalyst for water splitting and organic dye degradation. In this study, we have developed a simple soft-chemical method of doping Zn into g-C3N4 to prepare a metal-containing carbon nitride. The doping was confirmed by x-ray photoelectron spe…
Biochar produced from waste biomass is increasingly being recognized as a green, cost-effective amendment for environmental remediation. This work was to determine the ability of biochar to immobilize heavy metal Pb and organic pesticide atrazine in contaminated soils. Biochar prepared from dairy manure was incubated…
Abstract A computational study at the level of density functional theory was carried out to characterize the17O and2H nuclear quadrupole resonance (NQR) spectroscopy parameters in crystalline aspirin. To include OH···O and CH···O hydrogen bonding effects in the calculations, the most probable interacting molecules w…
This paper is concerned with mapping the characteristics of blistering induced on Mo/Si multilayers as a result of irradiation by hydrogen species generated in a thermal capillary cracker. The nature and extent of the damage observed is dependent on exposure conditions such as the sample temperature, the hydrogen isot…
This study addresses the structural and electronic properties of the NiAs- and MnP-type phases dominating in FeSe at high pressures. The analysis is performed using first-principle band structure calculations within the framework of the B3LYP hybrid exchange-correlation functional. Based on the volume-pressure relatio…
We present a study of the effects of electron-beam irradiation on the Raman spectra and electronic transport properties of graphene and the operation of graphene field-effect transistors (GFET). Exposure to a 30 keV electronbeam causes negative shifts in the charge-neutral point (CNP) of the GFET, interpreted as due t…
This article reports on a comprehensive experimental study of 16 O + and 90 Zr + ion co-implanted SrTiO 3 (STO) single crystals. In this study, STO was used as a model material to simulate a waste form for disposal of radioactive 90 Sr that decays to 90 Y and subsequently to 90 Zr by emission of β – particles. Sequent…
Summary Nata is white gelatinous bacterial cellulose produced by Acetobacter aceti ssp. xylinum through fermentation of coconut water. Drying behaviour of nata de coco was conducted with a hot air dryer for a temperature range of 50–90 °C. The experimental data obtained were fitted into seven empirical and/or semi‐the…
Abstract The effect of chitosan (2 mg/ml) on the functionality of the plasma membrane of the Rhizopus stolonifer was studied. This study focuses on the changes in the integrity of the plasma membrane, external minimum medium pH, membrane potential, potassium efflux and determination of membrane phospholipids and prote…
A Xenon gas bubble introduced into a vertically suspended steel cylinder is driven to sonoluminescence by impacting the apparatus against a solid steel base. This produces a 150-ns flash of broadband light that exceeds 100-W peak intensity and has a spectral temperature of 10,200 K. This bubble system, which yields li…
Using pre-existing ZnO nanowires as lattice-matched templates, we have systematically studied the catalyst-free regrowth of ZnO nanostructures in a chemical vapor deposition (CVD) system. Because the templates (or crystal seeds) provided nanoscale preferential nucleation sites for the subsequent growth, changing ZnO s…
Abstract The influence of doping on the structural and optical characteristics of Ge2Sb2Te amorphous thin films has been determined with micro‐Raman scattering spectroscopy and a variable incident angle spectroscopic ellipsometer (VASE). The measured Raman spectra revealed the existence of two overlapping bands B2 nea…
The current experimental methods are not able to reveal the actual processes of atomic movements during twinning and thus are incapable of clarifying the underlying mechanisms of annealing twinning, which are still not clear at present. We developed a method of molecular dynamics simulation to study the mechanism of a…
This article presents a computational model of the thermal bonding of nonwovens using convective hot air and its experimental validation. A computational fluid dynamics model based on the continuum modelling approach and the theory of porous media is developed to treat the flow behaviour and heat transfer within the t…
High-quality (0001)-oriented ZnO epitaxial films have been grown by pulsed laser deposition on Si(111) buffered with a nanometer-thick Gd 2 O 3 (Ga 2 O 3 ), GGO, layer. The structural characteristics of the ZnO epi-layers were studied by X-ray diffraction and transmission electron microscopy (TEM). The in-plane epitax…
Three-dimensional (3D) fibrous hydrogels were fabricated by blending two photoactive polymers, poly(ethylene glycol) diacrylate (PEGDA) and poly(vinyl alcohol) (PVA), and the resulting solution was electrospun. PEGDA is a commonly used hydrogel material for tissue engineering applications since its interaction with ce…
We report the strong magnetic field dependence of ferroelectric PbZr(0.52)Ti(0.48)O(3) (PZT) films on half-metallic oxide La(0.67)Sr(0.33)MnO(3) (LSMO) electrodes. As the field H is increased, the hysteresis loop first broadens (becomes lossy) and then disappears at approximately H = 0.34 T and ambient temperatures. T…
Cesium dihydrogen phosphate (CsH2PO4, CDP) and dodecaphosphotungstic acid (H3PW12O40·nH2O, WPA·nH2O) were mechanochemically milled to synthesize CDP–WPA composites. The ionic conductivities of these composites were measured by an ac impedance method under anhydrous conditions. Despite the synthesis temperatures being…
The corrosion inhibition performance of Neem leaf (Azadirachita indica) extract on the corrosion of mild steel test specimen immersed in 0.5 M HCl and H2SO4 acids respectively at the ambient temperature of 30°C and elevated temperature of 80°C was investigated. The experimental work was performed by the use of weight…
The spin-polarized transport properties of Fe atomic chain adsorbed on zigzag graphene nanoribbons (ZGNRs) are investigated using the density-functional theory in combination with the nonequilibrium Green's function method. We find that the Fe chain has drastic effects on spin-polarized transport properties of ZGNRs c…