Materials Literature
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The six orientation relationships (ORs) found in the Mg/γ-Mg 17 Al 12 precipitation system were summarized and systematically interpreted based on the atomic structure of the precipitate γ-Mg 12 Al 17 and the invariant deformation element (IDE) model for diffusional phase transformations. It was found that the pseudo-…
Using first-principles calculations we have studied the reactions of water over Ti adatoms on the (110) surface of rutile TiO(2). Our results provide fundamental insights into the microscopic mechanisms that drive this reaction at the atomic level and assess the possibility of using this system to activate the water d…
Neutron Larmor Diffraction is a relatively new concept in neutron scattering which allows high resolution studies of subtle structural features in condensed matter. Several setups exist in various neutron facilities around the world. One of them is the Zero-field spin-Echo for Triple-Axis option (ZETA), available on t…
The effects of Ag2O-doping on the physicochemical, surface and catalytic properties of FeAlO system with various extents of Fe2O3 loading have been investigated. The dopant concentration was changed between 1.5 and 4.0 mol % Ag2O. Pure and variously doped solids were subjected to heat treatment at 400–800 °C. The tech…
Particles in tubes: Multiwalled carbon nanotubes containing Fe3C particles (see SEM image) have been prepared by pulse-injection chemical vapor deposition. The Fe3C particles provide the nanotubes with magnetic properties. The use of the nanotubes was also investigated in in vitro drug-release studies.
Hybrid compounds of molybdovanadophoric heteropolyacids and a Schiff base transition metal complex, M‐saldmp or M‐fpdmp (M = Fe(II), Co(II), Cu(II)), were successfully prepared and found to be effective catalysts for direct hydroxylation of benzene with H 2 O 2 . The synergistic effect between Schiff base metal comple…
Brillouin spectra measurements have been carried out from 800 to 100 K for Pb(Sc${}_{1/2}$Ta${}_{1/2}$)O${}_{3}$ in back-scattering geometry. The frequency of the longitudinal acoustic (LA) phonon begins to show marked softening followed by an increase in its width below the intermediate temperature ${T}^{*}$ $=$ 450…
Abstract Linear friction welding (LFW) of Ti‐6Al‐4V (Ti‐64) titanium alloy with a different microstructure from the previous study was conducted. The joint microstructure, tensile strength and fracture characteristics were studied. Results show that the microstructure of parent metal has a strong influence on the micr…
Delafossite compound CuFeO 2 is a spin-driven magneto-electric multiferroic, in which magnetic field-induced or nonmagnetic impurity-induced proper helical magnetic ordering generates a spontaneous electric polarization through the spin-orbit-interaction mediated modulation of Fe 3d-O 2p hybridization. As is expected…
Resonant enhancement is seen in some gold clusters at the gold 4f 7/2 and 4f 5/2 threshold, indicative of an f to d transition. The existence of such resonance is generally not observed in ultrasmall Au nanoclusters because this resonant transition is forbidden in atomic gold, as gold represents a filled 5d 10 6s 1 sy…
Nanostructured heterogeneous catalysts will play a key role in the development of robust artificial photosynthetic systems for water photooxidation and CO2 photoreduction. Identifying the active site responsible for driving these chemical transformations remains a significant barrier to the design of tailored catalyst…
This paper presents a novel method to effectively protect the structural material polycrystalline silicon (polysilicon) from electrochemical corrosion, which often occurs when the MEMS device is released in HF-based solutions, especially when the device contains a noble metal. This corrosion seriously degrades the ele…
Abstract Four manganese‐based carbazol‐9‐ylacetato complexes [Mn 2 (cabo) 4 (2,2′‐bpy) 2 ] ( 1 ), [Mn 2 (cabo) 2 (2,2′‐bpy) 4 ](ClO 4 ) 2 ( 2 ), [Mn(cabo) 2 (CH 3 OH) 2 ] n ( 3 ), and [Mn(cabo) 2 (4,4′‐bpy) 2 ] n ( 4 ) (cabo – = carbazol‐9‐ylacetate, 2,2′‐bpy = 2,2′‐bipyridine, 4,4′‐bpy = 4,4′‐bipyridine) have been sy…
We present dynamic measurements of a lattice gas during phase separation, which we use as an analogy for self-assembly of equilibrium ordered structures. We use two approaches to quantify the degree of reversibility of this process: First, we count events in which bonds are made and broken; second, we use correlation-…
Single-crystalline nanostructures of tin(IV) oxide (TO) are grown with the aid of size-controllable gold nanoisland (GNI) catalysts supported on a Si substrate by using the pulsed laser deposition (PLD) method. The use of gold nanocatalysts with average size between 15 and 50 nm enables the deposition driven by the va…
The atomic structure at the Au(001) electrode surface has been studied by in situ surface X-ray diffraction in 0.1 M HClO 4 + 10 –2 M KBr and 0.1 M HClO 4 + 10 –2 M KBr + 10 –3 M Cu(ClO 4 ) 2 electrolytes. Potential-dependent X-ray diffraction measurements indicate that the commensurate c (√2×2√2) R 45°-Br ad structur…
Two enzymes of unknown function from the cog1735 subset of the amidohydrolase superfamily (AHS), LMOf2365_2620 (Lmo2620) from Listeria monocytogenes str. 4b F2365 and Bh0225 from Bacillus halodurans C-125, were cloned, expressed, and purified to homogeneity. The catalytic functions of these two enzymes were interrogat…
The neutron diffraction and acoustic emission (AE) techniques have been used for in-situ investigation of deformation twinning activity in cast polycrystalline magnesium at room temperature. The combination of these two techniques results in obtaining complementary information about the twinning mechanism during the s…
Unter hoher Verdünnung liefert die oxidative Kupplung von β-Aminoporphyrinen durch 2,3-Dichlor-5,6-dicyan-1,4-benzochinon (DDQ) in guten Ausbeuten die pyrazinverbrückten Diporphyrine 1. Bei der entsprechenden Oxidation von 5,10,15,20-Tetraphenylporphyrin-Derivaten entsteht zudem das über eine Bindung verknüpfte Diamin…
Diluted (1.0-1.5 wt%) aqueous gelatin solutions have been cooled to -10 °C at a cooling rate 20 °C min(-1) without freezing and detectable gelation. When heated at a constant heating rate (0.5 -2 °C min(-1)), the obtained supercooled solutions demonstrate an atypical process of gelation that has been characterized by…