Materials Literature
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A thermodynamic database for nuclear materials, including U-Th, U-Pu, Th-Pu, and (U, Th, Pu)-X (X = Al, Co, Cr, Cu, Fe, Ga, Mg, Mn, Mo, Nb, Ni, Si, Ta, W, Zr) binary system has been developed by the Calculation of Phase Diagrams (CALPHAD) method. Thermodynamic parameters describing Gibbs free energies of different pha…
Identisch oder Brüder? Nanokristalline Palladium-Platin-Legierungen mit gut definierten verzwillingten Strukturen (siehe Bild) wurden durch Coreduktion von Pd- und Pt-Salzen hergestellt. Die Bildung verzwillingter Morphologien erfordert Koaleszenz zwischen zunächst gebildeten kleinen Partikeln während der langsamen Re…
1 High‐velocity impact can produce failure waves in glass. Failure waves limit the speed at which a glass target can become comminuted. The resulting time dependence of strength is likely to influence resistance to ballistic penetration.
Abstract Surface‐enhanced Raman scattering from carbon nanotube bundles adsorbed with plasmon‐tunable Ag‐core Au‐shell nanoparticles (Ag@Au nps) was carried out for the first time. By utilizing nanoparticles whose plasmon resonance peak (541, 642 nm) closely matches the commonly used Raman excitation sources (532, 632…
We calculate the statistics of diffusion-limited arrival-time distribution by a Monte Carlo method to suggest a simple statistical resolution of the enduring puzzle of nanobiosensors: a persistent gap between reports of analyte detection at approximately femtomolar concentration and theory suggesting the impossibility…
), or dimethyl formamide (DMF). All of these are highly toxic chemicals and poisonous materials for environment. In the present method, the sinorhiziobial octasaccharides were used as capping agenta without toxic reducing agents for the generation of Ag nano-crystals, upon the addition of basic aqueous solution. This…
Abstract Polymerized high internal phase emulsion of poly(divinylbenzene), poly(DVB)polyHIPE filled with porous clay has been successfully prepared. The hybrid organic–inorganic porous clay heterostructures (HPCH) were obtained from a reaction of organo‐modified bentonite, surfactant, and tetraethoxysilane (TEOS)/meth…
Ca1−x La x NiAl11O19−δ(O ≤ x≤1) hexaaluminate oxydes were synthesized starting from nitrate salts of Ca, La, Ni and Al precipitated by citric acid. After calcination they were used as catalysts precursors in dry reforming of methane to synthesis gas at atmospheric pressure (600–800 °C) with a mixture of CH4/CO2/Ar:1/1…
The H(5)PV(2)Mo(10)O(40) polyoxometalate and Pd/Al(2)O(3) were used as co-catalysts under anaerobic conditions for the activation and oxidation of CO to CO(2) by an electron transfer-oxygen transfer mechanism. Upon anaerobic reduction of H(5)PV(2)Mo(10)O(40) with CO in the presence of Pd(0) two paramagnetic species we…
Innen oder außen: Die Verteilung von fluoreszenzmarkierten Aminogruppen auf mesoporösem Siliciumdioxid wurde durch konfokale Laser-Scanning-Mikroskopie visualisiert (siehe Bild). Die Mobilität der zur Funktionalisierung eingesetzten Aminosilane bestimmt den relativen Anteil der an der Oberfläche verankerten Gruppen. A…
Two homologous series of quinoline-containing liquid crystalline compounds were synthesised. Preparation of these compounds was completed in a short two-step reaction. Fair to good two-step overall yields of 63%–68% and 50%–60% were obtained respectively for the liquid crystalline compounds of 2-(4-alkylphenyl)-6-meth…
Self-organized (Ba0.7,Sr0.3) TiO3 (BST) thin film nanocomposites with spherical inclusions have been fabricated. The composite structures were built up from initial amorphous BST films, thanks to an adequate thermal treatment. Microstructural and electrical analyses are reported as a function of crystallization ratio…
A computational study of the reactions between Zn-containing species, the products of the thermal decomposition of diethylzinc (DEZn) and water was investigated. The Zn-containing species – <TEX>$C_2H_5)_2,\;HZnC_2H_5,\;and\;(ZnC_2H_5)_2$</TEX> – were assumed to react with water during ZnO metal organic chemical vapor…
We suggest a theory of field-induced charge-density-wave phases, generated by high magnetic fields in quasi-low-dimensional conductors. We demonstrate that, in layered quasi-one-dimensional conductors, the corresponding critical magnetic field ratios are universal and do not depend on any fitting parameter. In particu…
We have developed a new method to calculate the static permittivity tensors of organic molecular crystals by applying the charge response kernel theory (Morita, A.; Kato, S. J. Am. Chem. Soc. 1997, 119, 4021) in which all the parameters were obtained with the density functional theory. The accuracy together with the r…
We report quantum oscillation measurements on CaFe(2)As(2) under strong magnetic fields-recently reported to become superconducting under pressures of as little as a kilobar. The largest observed carrier pocket occupies less than 0.05% of the paramagnetic Brillouin zone volume-consistent with Fermi surface reconstruct…
We report the synthesis and liquid crystalline behaviour of two series of para-substituted terphenyls as dopants with a rigid rod-like shape, rather than a wedge-, pear- or banana-shape, for guest–host nematic mixtures with flexoelectric properties. One series of liquid crystalline dopants is of low-to-strongly negati…
Ab initio density functional calculations have been performed for cubic FeGe. The calculated equilibrium geometry as well as the ordered magnetic moment in the ground state are in excellent agreement with experiment. To study the influence under pressure, we survey the electronic structure varying the lattice constant…
Abstract Cassava‐starch based polymer films containing glycerol as a plasticizer (1.0‐2.5‐5.0%, w/w) and different lipids as additives (paraffin, stearyl alcohol, and beeswax – 0.25‐0.5‐1.0%, w/w) were produced. Control films were produced by heating a mixture of glycerol, starch, and water, while treated films were p…
We present gain and lasing results from a polyrotaxane consisting of a conjugated polymer (polyfluorene-alt-biphenylene) threaded through sugar macrocycles (β-cyclodextrin). Encapsulation suppresses interchain charge separation, leading to lasing emission not observed in the unthreaded polymer, and enlargement of the…