Materials Literature
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The effects of Zn2+ and Nb5+ co-doping (x mol%ZN) on the electrical properties of lead-free Ba0.90Ca0.10Zr0.10Ti0.90O3-Seed ceramic systems, where x = 0.0–1.0 mol% have been studied. The ceramics were prepared using the solid state reaction technique. The phase of the samples showed pure perovskite structure. The dens…
The γ-Al2O3 and C-doped γ-Al2O3 powders have been synthesized by a modified polyacrylamide gel method. XRD, SEM and luminescence characterization have been used to study the prepared samples. The results indicate that the particle size and morphology of the samples depend on the choice of chelating agent. In compariso…
A simple formulation of bactericidal cold cream using the biosynthesized silver nanoparticles (AgNPs) from Cassia auriculata flower extract and their antibacterial activity was tested against various clinical pathogens such as Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Staphylococcus epidermi…
ABSTRACT This study investigated the effect of removal of wood cell wall composition on thermal, crystallization, and dynamic rheological behavior of the resulting high density polyethylene (HDPE) composites. Four types of wood particle (WP) with different compositions: native wood flour (WF), hemicellulose‐removed wo…
IR spectroscopy has been used to investigate the properties of H and D in single crystals of the transparent conducting oxides, SnO2, and In2O3. H introduces several O-H stretching lines and also the broad absorption arising from free carriers. IR spectroscopy has been used to identify the sources of n-type conductivi…
Superelastic behavior at nano-scale has been studied along cycling in Cu-Al-Ni shape memory alloy micropillars. Arrays of square micropillars were produced by focused ion beam milling, on slides of [001] oriented Cu-Al-Ni single crystals. Superelastic behavior of micropillars, due to the stress-induced martensitic tra…
In this study, we aimed to improve the strength of textile composites by applying surface treatments on natural fibers. Natural fibers used were flax and hemp, and the matrix was an epoxy acrylate resin. The flax fiber textile was treated with acetone, laundry detergent, and aqueous solution of sodium hydroxide, becau…
Charge-stabilized silver particle suspensions were prepared by the chemical reduction of silver nitrate using various organic and inorganic reducing agents such as gallic acid, tannin, hydroxylamine hydrochloride, hypophospite, sodium hexametaphosphate, borohydride and trisodium citrate. The control of the size of nan…
In this study, halloysite nanoclay was subjected to sulfuric acid treatment and used as a reinforcing agent in polyvinyl alcohol (PVA). Halloysite is one of the natural substances that is currently recognized as having a nanotubular structure resembling carbon nanotubes. Halloysite nanotubes are 50 nm in diameter, 0.5…
The potential of chitosan (CH) combined with sodium tripolyphosphate (TPP) nanoparticles as a glazing material for shrimp was investigated. Two CH–TPP nanoparticles glazing solutions were prepared: (1). A solution containing CH–TPP nanoparticles with 0.25 (g/100 mL) CH and 0.083 (g/100 mL) TPP (25CH–TPP) and (2). A so…
The magnetic structure of EuCu2Ge2 has been determined by flat-plate neutron powder diffraction. Two magnetic phases are present in the neutron diffraction pattern at 3.5 K. They have the same moment, within error, and a common transition temperature. Both 151Eu and 153Eu Mössbauer spectroscopy show that the two magne…
This paper reports the relationship between the conductive property and the ultraviolet-visible spectrum in Mn-doped BaTiO3-based ceramics. It was observed that the conductance increased with the addition of Mn in BaTiO3. Ultraviolet-visible absorption effects were observed in the pure BaTiO3 and the doped BaTiO3 cera…
By using a simple and efficient deuteration process, (2)H has been successfully introduced into layered double hydroxides (LDHs). Due to significantly less (1)H-(1)H homonuclear dipolar coupling, high-resolution (1)H solid-state NMR spectra can now be obtained conveniently at medium to low spinning speed to extract th…
We computationally examine how adding NaCl to an aqueous solution with α- and γ-glycine nuclei alters the structure and interfacial energy of the nuclei. The polar γ-glycine nucleus in pure aqueous solution develops a melted layer of amorphous glycine around the nucleus. When NaCl is added, a double layer is formed th…
A series of tridentate pincer ligands, each possessing two sulfur and one nitrogen donor (SNS), based on bis-imidazolyl or bis-triazolyl salts were metallated with CuCl2 to give new tridentate SNS pincer copper(I) complexes [(SNS)Cu]+. These orange complexes exhibit a three-coordinate pseudo-trigonal-planar geometry i…
The microwave noise parameters of graphene field effect transistors (GFETs) fabricated using chemical vapor deposition graphene with 1 μm gate length in the 2 to 8 GHz range are reported. The obtained minimum noise temperature (Tmin) is 210 to 610 K for the extrinsic device and 100 to 500 K for the intrinsic GFET afte…
We report on gallium (Ga) doped cubic MgZnO films, which have been grown by metal organic chemical vapor deposition. It was demonstrated that Ga doping improves the n-type conduction of the cubic MgZnO films. A two-orders of magnitude enhancement in lateral n-type conduction have been achieved for the cubic MgZnO film…
Co-doping size-tunable SnO2 nanocrystals into Er(3+) ions embedded silica thin films produces an enhancement of Er-related near-infrared emission by three orders of magnitude. Selective PL and PLE measurements show that energy transfer process occurs between SnO2 nanocrystals and Er(3+) ions. Quantitative studies of P…
In this study, we have investigated the sintering of mullite by three different methods: (i) reaction sintering by thermal decomposition of kaolinite, followed by reaction with alumina; (ii) reaction sintering of mullite by solid state reaction of pure silica and alumina; (iii) sintering of commercial electrofused mul…
A novel technique is proposed and demonstrated for processing interpenetrating ceramic–metal composites by the infiltration of molten metals/alloys into ceramic foams utilizing a current-activated, pressure-assisted technique. Ti2AlC foams were prepared and used as the infiltration preform. Aluminum alloy 6061 (AA6061…