Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Using x-ray absorption and valence-band photoelectron spectroscopy (PES) we investigated the electronic structures of icosahedral (i)-Al70Pd22.5Re7.5 quasicrystals (QCs) with a 4.2 K/300 K resistivity ratio, r, ranging from 8.3 to 107 obtained under various annealing conditions. Our Al K- and Pd L3-edge x-ray absorpti…
Abstract This paper deals with ‘Coalescence Extraction’, in which no intensive mixing is required. It is based on the use of a primary solvent, which, in combination with the feed, forms a homogeneous solution. This homogeneous phase has enormous potential for the treatment of cell fragments and other highly viscous m…
Abstract A reactor for catalytically oxidizing liquid methanol has been developed for supplying heat to an automotive reformer. In the tests presented in this paper we show that it is possible to catalytically combust liquid methanol by dispersing the methanol and air by a nebulizer over the catalysts. In the experime…
Preexposure to molecular oxygen gas, O2,g, can have a strong effect on the nucleation and growth of Ag islands on Ag(100) at 250 K. At this temperature, molecular oxygen dissociates efficiently at kink sites on steps. Subsequent deposition of Ag produces a far lower density of Agad islands than without oxygen. There i…
[reaction: see text] An efficient and highly stereocontrolled approach to the 8,10-dimethyl anti-syn-anti-perhydrophenanthrene carbon skeleton starting with the Wieland-Miescher ketone is described. The approach centers on a Diels-Alder-angular methylation-deoxygenation sequence.
The dielectric properties of Mn-doped ZnO ceramics with electrically active grain boundaries at low temperatures of 10–70 K were investigated by admittance spectroscopy. It was observed that the dielectric relaxation of the main shallow donors, zinc interstitial, in these samples occurred in the temperature range of 2…
Dominant n-type conductivity in sulfur-doped chemical-vapor-deposited diamond is observed by Hall-effect measurement. The activation energy is estimated at 0.5–0.75 eV above 600 K. Below 600 K, the carrier concentration deviates from the activation energy, and Hall mobility decreases in comparison with that above 600…
Using spectroscopic ellipsometry, the optical properties of the Bi3.25La0.75Ti3O12 (BLT) thin films with different film thicknesses on platinized silicon substrates prepared by chemical solution methods have been investigated in the 400–1700 nm wavelength range. By fitting the measured ellipsometric parameter (Ψ and Δ…
Foams of conventional ceramics are attractive for a wide range of industrial applications such as filters, insulators, heat exchangers and others. Advanced functional ceramics, e.g., superconductors or piezoceramics profit from a foam structure for a variety of applications. Foams of Y 2 BaCuO 5 —being the properitect…
Abstract This study investigates the effect of temperature on the ultrasonic degradation of polyvinyl acetate and polyvinyl chloride in chlorobenzene. The time evolution of molecular weight distribution was determined using gel permeation chromatography. Continuous distribution kinetics was used to obtain the degradat…
The phenyl-capped 3,4-ethylenedioxythiophene (EDOT) trimer is a well-defined oligomer of the related poly(3,4-ethylenedioxythiophene), the conjugated polymer that forms the basis of the commercialized conducting polymer “PEDOT-PSS.” EDOT-based oligomers are themselves potential candidates for applications in molecular…
We model the polarization behavior of ferroelectric multilayered composite structures including the double layer and the triple layer under the action of variable fields. The model takes into consideration the ceramic/polymer interfacial charge and the nonlinear hysteresis nature of the ferroelectric constituent mater…
The dynamics of polarization backswitching in highly oriented Pb(Zr0.3Ti0.7)O3 (PZT) thin films has been studied in nanoscale using piezoresponse scanning force microscopy (SFM). Our measurements reveal that a SFM-written domain with diameter about 200 nm in PZT films loses its polarization through both the sidewise a…
The interaction of NO with SrTiO3(100) surfaces was investigated using thermal desorption, photoemission, and first-principles density-functional calculations. The crystals used in the experiments exposed mainly (>80%) the TiO2-terminated face of SrTiO3(100). On the stoichiometric surfaces, the adsorption of NO…
An evolution of the double-beam laser interferometer used for piezoelectric measurements in ferroelectric thin films is reported. Measuring the d33 hysteresis of a ferroelectric material using lock-in technique with large time constants requires a varying bias field to be applied to the sample over a long period of ti…
The assembly of two-dimensional cyanide-bridged Fe(III)-Ni(II) square grid networks at the air-water interface and subsequent transfer of these networks as isolated monolayer, isolated bilayer, and multiple bilayer (multilayer) films via the Langmuir-Blodgett technique results in novel low-dimensional systems in which…
We have measured the step response in thin film Permalloy as a function of both a hard-axis pulsed field amplitude and an easy-axis longitudinal magnetic bias field using a pulsed inductive microwave magnetometer. The bias field ranged from 0 to 8000 A/m (0 to 100 Oe) and the pulsed field varied from 0.32 to 320 A/m (…
Fe–29.9 at.% Pd shape memory ribbons have been manufactured by means of the free jet melt-spinning method. The microstructure, the shape memory effect and the texture of the manufactured melt-spun ribbons have been studied. Some of the results are compared with those obtained in similar studies on Fe–Pd shape memory m…
Abstract We examine some of the structural aspects that influence the mesomorphic behavior of liquid‐crystalline dimeric epoxy resins with imine groups in the mesogens. We synthesized two new series of monomers and compared them with previously synthesized monomers. Compared with previously studied series, the imine g…
We have investigated the electrical transport properties through crossed nanotube junction between two metallic single-walled carbon nanotubes. Depending on the temperature range, the crossed junction exhibits different behaviors. At high temperatures, the crossed junction acts as a tunneling junction and its conducta…