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。
Crystal structures of dipeptides with hydrophobic channels presented in the past all have hexagonal symmetry. The compounds L-valyl–L-alanine acetonitrile solvate hydrate and L-valyl–L-serine trifluoroethanol solvate represent the first examples of structures with monoclinic symmetry, which has the effect of changing…
Tungsten ͑W͒ thin films were deposited using a modified chemical vapor deposition ͑CVD͒ process, called pulsed CVD, and the film properties were characterized as nucleation layers for a W-plug fill process.In this study, the deposition stage is composed of four steps, resulting in one deposition cycle: ͑i͒ reaction of…
The luminescent properties of the new red phosphors in the solid solution system Ca x Cd 1 − x MoO 4 : Eu 3 + , Li + are reported. Their dominating emission peaks are at 615 nm, which satisfies color purity. Under the excitation of ∼ 320 nm UV light, some selected samples have luminescent intensity 30% higher than tha…
Collagen-silica hybrid materials have been considered for potential biomedical applications. Understanding of the collagen-silica interactions is the key to control hybrids structure and properties. For this purpose, the effect of sodium silicate and sodium chloride addition at two concentrations, 0.83 and 10 mM, on t…
Current trends in e-textiles and smart fabrics try to find a symbiosis of electronics and clothing. Aug-menting a fabric with an intrinsic sensing function is an elegant way to measure the environment. This approach supports the idea of a smooth combination of the two worlds of electronics and clothing. Our hybrid fab…
Biosyngas was investigated as a potential fuel for solid oxide fuel cells. C-H-O ternary diagrams were employed to evaluate the thermodynamics of carbon deposition with selected gas compositions. Impedance measurements were carried out with Ni/GDC and SDC anodes. Gas compositions representing biosyngas were used in th…
The loculate ("chambered") valve structure of centric diatoms like Triceratium favus Ehrenberg has been mentioned time and again in the nanostructure literature. Here we draw attention to the fundamentally different alternative sandwich model nature developed in the genus Pleurosigma, where it is nonloculate. This has…
The Zintl phase, Yb8Ge3Sb5 exhibits a complex lattice response and an abrupt negative thermal expansion below 15 K - subtle structural changes before and after the transition are consistent with temperature-induced electron transfer from (to) Yb 4f bands to (from) Sb 5p and Ge 4p bands.
Hydrogen peroxide in high yields can be generated with high efficiency at mild conditions (25 degrees C and atmospheric pressure) with the formation of only environment-friendly by-products (N2 and H2O) by a reduction of O2 by hydrazine from its hydrate/salt with its complete conversion in a short reaction period (<or…
The authors have been developing a newly-designed totally-implantable artificial myocardium using a covalent shape-memory alloy fibre (Biometal®, Toki Corporation), which is attached onto the ventricular wall and is also capable of supporting the natural ventricular contraction. This mechanical system consists of…
A simple fracture testing method, combined with acoustic-emission (AE) monitoring was developed in order to investigate the mechanical performance of solid oxide fuel cells (SOFCs) under simulated environment. The fracture testing method was applied to ceria electrolyte-supported single cells. The fracture damage proc…
A composite Ni-Y doped ZrO 2 ͑YSZ͒ composite was prepared by depositing a 1-50 m thick coating of YSZ particles from a colloidal suspension ͑initial YSZ particle size ϳ100 nm͒ onto a sapphire substrate followed by impregnation by Ni polymer precursors into the coating and annealing at 800°C.The electrical conductivity…
To develop biodegradable polymers with favorable physicochemical and biological properties, we have synthesized a series of poly(terephthalate-co-phosphate)s using a two-step poly-condensation. The diol 1,4-bis(2-hydroxyethyl) terephthalate was first reacted with ethylphosphorodichloridate (EOP), and then chain-extend…
Abstract The hydrated ammonium hemizinc dihydrogen diphosphate (NH 4 ) 2 Zn(H 2 P 2 O 7 ) 2 · 2 H 2 O was synthesized. It crystallizes in the triclinic system, space group P -1, Z = 1, with the following unit-cell-parameters: a = 7.0026(2) Å, b = 7.3297(2) Å, c = 7.7885(3) Å, α = 81.229(1)°, β = 71.064(1)°, γ = 88.172…
The influence of the temperature and concentration of NaOH on the formation of porous was investigated. The porous was obtained only after a immersion in NaOH at . The X-ray diffraction pattern indicated that the porous layer consisted of a mixture of anatase and rutile types of . During immersion in the NaOH solution…
The combination of x-ray absorption spectroscopy (XAS) with UV-Vis and Raman spectroscopies or with Differential Scanning Calorimetry (DSC) has been recently carried out on the D44 beamline of DCI-LURE. The different set-ups used to perform such combinations are described and examples of combined investigations belong…
Abstract β‐(Perfluoroalkyl)tetraarylporphyrin radicals, generated by the reaction of I(CF 2 ) n X ( n = 2−5; X = I, Cl) with porphyrins in the presence of Na 2 S 2 O 4 /NaHCO 3 in DMSO/CH 2 Cl 2 or DMSO, undergo cyclizations at the ortho position of a neighbouring phenyl ring and/or adjacent pyrrolic unit to give five…
This paper presents an optimization based method for simulation of forming processes of woven fabric reinforced composites. Two approaches are proposed for the simulation of the forming of woven fabric: geometrical and mechanical. The geometrical approach is based on a fishnet model. It is well adapted to pre-dimensio…
A selection of donor–acceptor chromophores containing the redox-active dithiafulvene unit about acetylenic and aryl scaffolds has been synthesised. The molecules were studied for their optical, redox and structural properties. Moreover, third-order non-linear optical properties were investigated as a function of molec…
In this work, Ti matrix composite reinforced with dispersed Ti5Si3 particles was synthesized via spark plasma sintering starting with Ti and SiO2. Because reports on the equilibrium phase diagram show that there is a two phase region with O dissolved Ti, Ti(O), and Ti5Si3, Ti and small amount of SiO2 transform into Ti…