Materials Literature
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Temporal and spatial behavior of WO3 plasma plume in pulsed laser deposition process have been studied using emission spectroscopic method. Three dimensional study of the plasma plume suggested that the emission plasma plume grew toward substrate direction after the laser irradiation on the target to 2.0 11s, and they…
Today there are increasing levels of environmental pollution and there is evidence for the growing resistance of bacteria to traditional biocides. When these two factors are coupled to the rising cost of and concern about the possible overuse of biocides it is not surprising that there is active research underway to f…
[Objective] The research aimed to provide basis for the application of nano-materials in biological field.[Method] The changes of water clusters treated with nano-materials were studied through ultraviolet absorption spectrum and nuclear magnetic resonance spectroscopy.[Result] The light absorption of water treated wi…
A study has been undertaken to identify the source of coke fines sampled from the deadman area of the blast furnace. Using measurements of the coke crystallite dimension L C, it was established that some of the fines found in the deadman area of a blast furnace were not simply the degradation products of the lump coke…
We report the fabrication of the orientation preferred structures in BaTiO3 thin films on Ni substrates using pulsed laser deposition. Transmission electron microscopy studies showed that the films consist of crystalline structures of tetragonal BaTiO3. More than 60% of BaTiO3 grains in the films exhibit nearly the sa…
Semiconductor CdSe nanoparticles assemble into micrometer-sized spheres ranging from <1 to 50 μm when precipitated from hexane by methanol under conditions of stirring. Both solid and hollow spheres may be formed and the type of sphere can be controlled by the solvent concentration. In addition, stir rate and nanopart…
The bis-[trimethoxysilylpropyl]amine (BTSPA) film filled with copper phthalocyanine (Cu-Ph) was prepared by adding different concentrations of copper phthalocyanine - Cu-Ph and deposited on a carbon steel substrate using 120 ºC and 150 ºC as curing temperatures. For samples cured at 150 ºC a second layer was also depo…
Sol–gel derived inorganic–organic hybrid materials (HYBRIMERs) have shown a great potential for planar and channel waveguides due to their high photosensitivity, low-cost processing and good suitability for doping. These materials have been synthesized with a high content of titanium (40%) and with three different che…
We report the selective growth of α ‐Al 2 O 3 nanowires and nanobelts via a catalyst‐free chemical vapor deposition process under ambient pressure. By controlling the flow rates of the carrier gas, high‐yield production of uniform alumina nanowires with diameter distribution (100 nm–200 nm) was achieved at a high grow…
Transparent conducting Al-doped ZnO (AZO) cosputtered indium tin oxide indium tin oxide (ITO) electrodes were grown by dual target dc magnetron sputtering at room temperature for organic light-emitting diodes (OLEDs). It was found that the sheet resistance, resistivity, optical transmittance, figure of merit, and work…
N-(4-Arylazobenzoyl)-1H-benzotriazoles 3 react with amino acids 4 and amines 6 to give azo-dye labeled amino acids (5a-m) and amines (7a-n) in high yields (74-100%) with retention of chirality.
Poly(indenofluorene) was electrochemically deposited onto anode surfaces in CH2Cl2 medium along indenofluorene oxidation. The resulting films were characterized and compared with polyfluorenes. A mechanism of polymerization is proposed in the light of cyclic voltammetry experiments and theoretical calculations.
Protective metallic coatings based on Zn are usually used to protect steel against corrosion. When coated steel sheets are subjected to corrosive environments, its corrosion behaviour is affected due not only to changes of the coating texture, but also of the microstructure. The aim of this work was to study the effec…
Digital video-microscopy measurements are reported for both elastic bandstructures and overdamped phonon decay times in two-dimensional colloidal crystals. Both quantities together allow the determination of the friction coefficients along various high symmetry directions in q-space. These coefficients contain valuabl…
Copper-cobalt ferrites with general chemical formula Cu x Co 1-x Fe 2 O 4 (with x = 0.0, 0.4, 0.6 & 1.0) were prepared by ceramic method. The solid state reaction was confirmed by XRD patterns. DC conductivity was measured by two probe method. Electrical resistivity is found to increase on lowering of sintering temper…
Mg-Y-Zn alloys have attracted much attention in recent years due to their excellent mechanical properties, which are said to be the effect of the intermediate phase (X phase) in the Mg solid solution (α phase). The formation behavior of the X phase has been reported to be a eutectic type reaction in the Mg-Y-Zn pseudo…
Oxygen-permeation measurements were carried out on a specimen in the temperature range of as a function of the oxygen partial pressure from to . Simultaneously, the open-circuit voltage of the permeation cell and the voltage upon partially short-circuiting the cell over external resistances were measured. As a result,…
Effects of pre-strain and heat treatment on shape recovery stress and phase transformation temperature in Ti-Ni-Nb shape memory alloys with various Nb content (6, 9, and 12 mol%) were investigated by tensile testing. The recovery stress of Ti-Ni-Nb alloys increased with increasing the pre-strain and then decreased aft…
The extraction of fibres from bamboo culm during the degumming process was performed with commercial xylanase. It is found that a combination of mild chemical pretreatment and enzymatic treatment is essential to achieve a high level of degumming, and better fibre separation. FTIR analysis of substances removed by enzy…
The thermal conductivity of Si nanostructres is investigated using nonequilibrium molecular dynamics (NEMD) simulation based on the Tersoff III inter-atomic potential. A reliable range of heat flux for the calculation of thermal conductivity is determined by the comparative study of NEMD simulations with different hea…