Materials Literature
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In this study, we attempted to deposit low dielectric constant a-SiCO:H as a copper diffusion barrier by the plasma-enhanced chemical vapor deposition method using an organosilicon precursor, bis(trimethylsilylmethane) (BTMSM, C 7 H 20 Si 2 ). The dielectric constant of the a-SiCO:H films increased from 2.54 to 3.25 a…
<b>Objective:</b> To investigate the effects of the methylene chloride:methanol (CH2Cl2:MeOH, 1:1) extract of the dried roots of <i> Mondia whitei</i> Linn and its hexane and methanol fractions on potassium chloride (KCl) and adrenaline (Adr)-induced contractions of rat vas deferens. <b> Materials and Methods:</b> Iso…
The SiO 2 -Fe 2 O 3 (F 3 O 4 ) system has been studied in air, oxygen, and an inert atmosphere. The dissociation temperatures for iron oxides, the onset and full melting temperatures for coexisting phases, and the melt demixing temperatures have been determined as a function of the oxygen partial pressure. A scenario…
We have successfully prepared an unsymmetrical analogue of a Katsuki-type salen ligand having a hydroxyalkyl group at the 6-position of just one of the binaphthyl units in the ligand, and also several Mn(III) complexes; these complexes have been attached to a polymer by an ester link and such polymer catalysts have be…
Ba 2 Zn S 3 : Pr phosphors, emitting white to green light, were synthesized by the double-crucible method. X-ray diffraction results indicate that the raw materials were completely sulfurized at 1000 ° C for 2 h . All samples doped with 0.05 – 10 mol % Pr 3 + had orthorhombic crystal structures. The emission spectra a…
The densification and electrochemical activity for oxygen reduction of the bismuth ruthenate pyrochlores, synthesized by the Pechini method, have been investigated as the interconnect and cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs). The substitution of bismuth on the ruthenium site…
The continuous-wave/time-resolved photoluminescence (CWPL/TRPL) and capacitance–voltage (C-V) analysis of multirecipe silicon-ion-implanted are demonstrated to study the lifetime evolution of three radiative defects with luminescent peaks at 415, 455, and , which are identified as the weak oxygen bonding (O–O) defects…
Abstract Numerical simulations and experimental studies of the lasing effect in chiral liquid crystals are presented. It is shown that ring-like light emission, which is often observed experimentally, is a true lasing effect. Lasing condition and different modes in thin liquid crystal layers are discussed.
The photophysical properties of tetrakis(1,1-dimethyl-2-trimethylammonium)ethylphthalocyaninato zinc(II) tetraiodide (I) – a water-soluble cationic phthalocyanine – are presented in the presence of human serum albumin (HSA) and in micelles of sodium dodecylsulfate ( SDS ) and hexadecyltrimethylammonium chloride ( CTAC…
Lipid-packaged, mixed-valence linear platinum complexes are dispersed in chloroform, chlorocyclohexane and in methylcyclohexane. They show indigo-colors, which are identical to solid samples. These lipid-complexes display supramolecular thermochromism, resulting from heat-induced dissociation and recovery of coordinat…
The reaction of diamidopyridine-dipyrromethane or dipyrromethene hybrid macrocycles with palladium(II) affords mono-metalated complexes, wherein the metal centre is coordinated to the macrocycle exclusively through pyrrolic nitrogen donor atoms.
A one-dimensional model based on the Stefan-Maxwell formulation for mass transfer of the main components of a binary molten carbonate electrolyte, including all of the nonidealities, was formulated and applied to the molten carbonate fuel cell (MCFC). The Stefan-Maxwell diffusion coefficients were determined from lite…
The electrochemical reduction of hydrogen peroxide has been studied on a series of simulated nuclear fuel (SIMFUEL) materials with different amounts of simulated fission products. Steady-state polarization measurements under diffusion-compensated conditions show that the reaction proceeds with a weak dependence on app…
Profound understanding and survey of magnesium base intermetallic compounds is hindered by various difficulties in their processing and fabrication. Solid-state synthesis via the bulk mechanical alloying (BMA) is free from contaminations and segregation through high reactivity of elemental constituents against crucibl…
A new semi‐fluorinated chiral smectic liquid crystal, W504, is investigated by electro‐optic, dielectric and X‐ray scattering experiments. It exhibits a huge dielectric soft mode response, strong electroclinic effect and a birefringence which increases considerably with the director tilt angle θ; typical characteristi…
The mesoscopic structures of the Heusler alloys Ni 49.1 Mn 29.4 Ga 21.5 and Ni 2 MnGa are studied by small-angle polarized neutron scattering in the temperature range 15 < T < 400 K. The characteristic temperatures of phase transformations (ferromagnetic, martensitic, and premartensitic transformations) and the charac…
A series of cholesteryl end-capped biodegradable oligo/poly(trimethylene carbonate)s were synthesized and characterized. The end-capped oligomers/polymers were synthesized by the ring-opening polymerization of trimethylene carbonate (TMC) initiated by cholesterol bearing a hydroxyl group without adding any catalyst. T…
Infrared-to-visible upconversion emission was used for photocuring of a pentaerythritol tetraacrylate (PETA) by infrared laser irradiation to achieve local polymerization on an upconversion phosphor. Submillimeter-sized, cone-shaped and solid poly (PETA) was successfully formed on a Y2O3 compact doped with 5 mol% Er u…
We investigated thermal expansion properties of Ni-Fe alloy electrodeposits, which are anticipated for use as low thermal expansion materials.Thick and crack-free Ni-Fe alloy electrodeposits with 25 to 58mass% Fe contents were obtained from sulfate/chloride electrolytes with additives, saccharin and malonic acid. The…
This paper describes the results of experiments and simulations made to examine the corona discharges from water droplets on a polymer surface exposed to electrical stress. In this study, water droplets with different conductivities and volumes were placed on the surface of plate-shaped high temperature vulcanized sil…