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。
To obtain the required quality of welded joints in welding of various structures, special attention must be paid to the preliminary determination of the welding conditions. At present, there are no...
Abstract The significance of preferential orientation in microcrystalline silicon for its post‐oxidation properties and solar cell performance has been investigated in the high crystalline volume fraction range. The degree of <110> preferential orientation can be varied by changing hydrogen/silane ratio in plasma enha…
Despite the recent substantial technological developments in X-ray crystallography, solving and refining structures at low resolutions remain substantial challenges. Many macromolecular crystals, especially those of large molecules or multicomponent assemblies, diffract X-rays to resolutions that are worse than 3.5Å.…
We present the fabrication and the superconducting properties of MgB2ceramic samples doped with carbon via preceramic polymers: linear and cyclic polysiloxane-co-styrene and linear polysiloxane-co-vinyl-ferrocene. The samples were produced using the spark plasma sintering technique. The use of polysiloxane copolymers…
Graphene is a relatively new material (2004) made of atomic layers of carbon arranged in a honeycomb lattice. Josephson junction devices are made from graphene by depositing two parallel superconducting leads on a graphene flake. These devices have hysteretic current-voltage characteristics with a supercurrent branch…
In order to study hydrogen-defect interactions, the effects of ion irradiation and annealing on the site occupancy of hydrogen dissolved in Nb, NbH 0.023 , have been investigated at room temperature by the channelling method utilizing a nuclear reaction 1 H( 11 B,α)αα with a 2 MeV 11 B + beam. By irradiation at room t…
The pore and crack formations in the weld bead during underwater wet welding are the main cause of failure to reach the required mechanical properties of the weld metal. These defects are closely associated with the decomposition of the water molecule under electric arc conditions. In this paper, the thermodynamic cal…
Metakaolinite (MK)-based geopolymer-polyvinyl alcohol (PVA) composite (GPC) was synthesized in the presence of aqueous phosphoric acid as an activator at room temperature. The microstructure and morphological changes of GPC were analyzed by means of X-ray diffraction (XRD), Fourier transform-infrared spectrometry (FT-…
Renewed interest has arisen in plasma armatures as evidenced by two papers presented at the 2008 EML Symposium. It is hoped that the work at the University of Texas described in these papers succeeds. There may, however, be some uncertainties related to the nature of plasma armatures in that work. The thoughts we offe…
The published route to a series of 6′-arylamino substituted photochromic spirooxazines has been investigated with improvements made to perform the synthesis in satisfactory yield. The route has been exemplified with several novel derivatives prepared (including hydroxyl functionalised). Additionally, a one-pot procedu…
This paper reports on a polypyrrole (ppy) based bimorph nanoactuator. The nanoactuator consists of ppy nanowire and Cu thin film. To create a nanoactuator, a (10 ± 5)-nm-thick Cu film was precisely deposited on one side of a (13.7 ± 1.0)-μm-long and 270 ± 20 nm diameter ppy nanowire. The bimorph was thermally actuated…
Single-crystal, synchrotron powder X-ray diffraction and neutron powder diffraction studies of the novel pyrochlore-type compound with the structural formula K(0.88)(OH)(0.54)H(1.66)(H(2)O)(1.04)Nb(2)O(6) suggests that the water molecules are located in 32e sites, and the hydroxide ions and potassium ions are located…
Abstract Motivated by the need for a more efficient simulation of material behavior at both larger length scale and longer time scale than direct molecular dynamics simulation, an atomistic field theory (AFT) for modeling and simulation of multiphase material systems has been developed. Atomistic formulation of the mu…
A novel ZnO-FTO heterostructure nanotube array was produced by combining a chemical solution process with oxygen-plasma etching. In this approach, presynthesized ZnO nanorod arrays act as templates, and FTO nanoparticles are deposited onto the ZnO nanorods by a simple spray pyrolysis method. X-ray photoelectron spectr…
We report evidence of two superconducting phases in the ${\text{Ce}}_{2}{\text{Rh}}_{1\ensuremath{-}x}{\text{Ir}}_{x}{\text{In}}_{8}$ heavy fermion systems. One of these phases is pressure induced and occurs for a range of compositions situated near the Rh-rich extreme, consistent with the behavior observed for the pu…
This paper presents new detailed features of microstrip lines on a generic pseudochiral medium. A full-wave analysis is also proposed based on the spectral domain technique to extract the propagation characteristics of the new line in a straightforward way is compared to other methods in the literature. In addition, T…
Proposed IEEE Standard 3004-1-D1 is a preferred practice for the application of instrument transformers in industrial and commercial facilities and includes references to both ANSI/IEEE and International Electrotechnical Commission practices. This paper will focus on the ratings of current transformers (CTs) applied f…
Abstract Corrosion by CO2 causes significant metal loss when compared with equivalent pH acid system, because, unlike proton reduction in conventional acid-based corrosion, there is a concomitant reaction here, stemming from direct reduction of un-dissociated carbonic acid. Given that carbonic acid is weakly ionizing…
Recently, a novel uracil-DNA-degrading factor protein (UDE) was identified in Drosophila melanogaster, with homologues only in pupating insects. Its unique uracil-DNA-degrading activity and a potential domain organization pattern have been described. UDE seems to be the first representative of a new protein family wit…
Single crystals of layered perovskite Sr 2 RhO 4-δ (δ=0.0 and 0.1) are successfully grown by the floating-zone method. Stoichiometric single crystals (Sr 2 RhO 4.0 ) are obtained by O 2 -annealing the as-grown crystals (Sr 2 RhO 3.9 ). Sr 2 RhO 4.0 and Sr 2 RhO 3.9 show quasi-two-dimensional Fermi-liquid behavior at l…