Materials Literature
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Amorphous manganese dioxide thin films were prepared by galvanostatic cathodic deposition at current densities of 0.5-1 mA/cm2 on etched stainless-steel substrate from KMnO4 solution. The structure of the deposited oxides was investigated using X-ray diffraction analysis. The capacitive behavior of the manganese dioxi…
Abstract The effect of reprocessing Polyamide 6 (PA6) has been studied in this article. To simulate recycled PA, we reprocessed virgin PA through five cycles. The PA 6 has undergone mechanical, thermal and rheological characterization after the various cycles of reprocessing in order to evaluate the corresponding prop…
Abstract A spectrum of materials has been explored as potential platforms for nanomedicine in the areas of drug delivery, imaging, and diagnostics/sensing. Depending upon the application required, the therapeutic compound being delivered, or the imaging agent being modified, certain nanoparticulate materials offer spe…
Magnetic shape memory alloys (MSMAs) can exhibit the shape memory effect when there is a magnetic field in the vicinity of a material point. The microstructure of the MSMAs is comprised of tetragonal martensite variants, each with their preferred internal magnetization orientation. Starting from a random variant orien…
We report the structural heterogeneity of recrystallized linear low-density polyethylene (LLDPE) films (25, 50, and 100 nm in thickness) in the direction normal to the surface, based on in situ grazing incidence small-angle X-ray scattering (GISAXS) and X-ray diffraction (GID) measurements. The GID results have clarif…
We report on the luminescence properties of bismuth-germanate glasses in which the speciation of bismuth is controlled via addition of CeO2 as an oxidant. A glass system with the composition (70.5-x)GeO2 - 24.5Bi2O3 - 5WO3: xCeO2, with x = 0...2.0, is analyzed in terms of optical properties and redox states of bismuth…
We study the finite-temperature spin dynamics of the paramagnetic phase of iron pnictides within an antiferromagnetic ${J}_{1}$-${J}_{2}$ Heisenberg model on a square lattice with a biquadratic coupling $\ensuremath{-}K{({\mathbf{S}}_{i}\ifmmode\cdot\else\textperiodcentered\fi{}{\mathbf{S}}_{j})}^{2}$ between the near…
Here, we report on the synthesis of α-Mn 2 O 3 complex nanostructures through heat-treatment of the precursor MnCO 3 (in similar structure and size) synthesized by a biomineralization route. The phase, microstructure, and morphology of the obtained sample were characterized by X-ray diffraction (XRD), Fourier transfor…
Zirconium tetraborohydride, Zr(BH 4 ) 4, was synthesized by a metathesis reaction between LiBH 4 and ZrCl 4 using high-energy ball milling. Initially, a white powder was produced, and during storage at −30 °C in a closed vial, transparent rectangular single crystals formed under the lid by vapor deposition. Single-cry…
A novel CeO-ZnO nanocomposite has been synthesized by a sol-gel method based on polymeric network of polyvinyl alcohol(PVA). In this work mixed solvent of 50:50 ethanol water was used to dissolve cerium nitrate,nickel nitrate and PVA. The mixture was heated to 80OC to form a homogeneous gel solution. The obtained gel…
Nanowire-shaped silver have been synthesized by the polyol process in ethylene glycol as a reductant, polyvinylpyrrolidone (PVP) as a stabilizer, using a microwave technique. The products were characterized by transmission electron microscopy (TEM). The presence of sodium chloride in the polyol reduction of silver nit…
H 2 -free CO oxidation and preferential CO oxidation in the presence of H 2 (PROX) have been studied on Ir 100– x Pd x nanoalloys ( x = 0, 11, 45, 89, and 100) supported on alumina or amorphous silica–alumina. The catalysts were prepared by impregnation of acetylacetonates and characterized by transmission electron mi…
Noncovalent interaction of methylene blue dye cation (MB + ) with single walled carbon nanotubes (CNT) is characterized by molecular dynamics (MD) simulation, quantum chemical calculations, and laser desorption/ionization (LDI) mass spectrometry. The MD simulation of the (MB + ) n –CNT ( n = 1–10) complexes in water d…
Utilizing the combined reducing property of antibiotics and sodium borohydride, gold nanoparticles (Gnps) were co-synthesized with the antibiotics (ampicillin, streptomycin and kanamycin) and during this process antibiotics were conjugated with Gnps. The conjugation of nanoparticles was confirmed by dynamic light scat…
Manganese and zinc were selected as alloying elements to develop a Mg-based ternary alloy for biomedical applications, taking into account the good biocompatibility of these metals. The microstructures of Mg-Zn-Mn alloys containing 0.5 or 1.0 mass% of manganese and 1.0 or 1.5 mass% of zinc were investigated by scannin…
Two-faced character in a film: Soft “Janus” two-dimensional colloidal crystal films were made using polystyrene (PS) particles, on an air–water interface as a mold for a flexible polypyrrole layer. By removing the PS particles, an array of femtoliter-sized cups was produced. These two-dimensional colloidal crystal fil…
As a typical smart material, shape memory polymers (SMPs) have the capability of variable stiffness in response to external stimuli, such as heat, electricity, magnetism and solvents. In this research, a shape memory polymer composite (SMPC) tube composed of multi-layered filament wound structures is investigated. The…
Spheres-on-sphere (SOS) silica particles are prepared in a one-pot scalable synthesis from mercaptopropyltrimethoxysilane with hydrophilic polymer and cationic surfactant under alkaline conditions. The SOS particles exhibit solid-core porous-shell properties. The fast separation of small molecules and proteins with lo…
γ-Al2O3 is a porous metal oxide and described as a defective spinel with some cationic vacancies. In this work, we calculate the electronic density of states and band structure for the bulk of this material. The calculations are performed within the density functional theory using the full potential augmented plan wav…
We present a brief review on the evolution of structure, microstructure, electrical and magnetic properties of NiO with transition metal (TM) doping. The fcc structure of NiO is not affected with TM doping whereas the some of the TM ion influences the microstructure. The antiferromagnetic property of NiO is strongly m…