Materials Literature
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The frst neutron powder diffraction based atomic pair distribution functions (PDFs) are reported from the new wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source at Oak Ridge National Laboratory. The spectrometer was run in white-beam mode, with no Fermi chopper. The PDF patterns of Si, Ni, a…
X-ray magnetic circular dichroism (XMCD) at the Eu L-edge (2p->5d) in two compounds exhibiting valence fluctuation, namely EuNi2(Si0.18Ge0.82)2 and EuNi2P2, has been investigated at pulsed high magnetic fields of up to 40 T. A distinct XMCD peak corresponding to the trivalent state (Eu3+; f6), whose ground state is no…
Structural evolution of a prospective hydrogen storage material, ammonia borane ${\text{NH}}_{3}{\text{BH}}_{3}$, has been studied at high pressures up to 12 GPa and at low temperatures by synchrotron powder diffraction. At 293 K and above 1.1 GPa a disordered $I4mm$ structure reversibly transforms into a new ordered…
Bi-doped glasses with broadband photoluminescence in the near-infrared (NIR) spectral range are presently receiving significant consideration for potential applications in telecommunications, widely tunable fiber lasers and spectral converters. However, the origin of NIR emission remains disputed. Here, we report on N…
Magnetic resonance imaging (MRI) has become increasingly popular in experimental molecular imaging and clinical radiology because it is non-invasive and capable of producing three-dimensional representations of opaque organisms with high spatial and temporal resolution. Approximately 35% of all clinical MR scans utili…
An experimental set‐up for loading graphene flakes in both tension and compression is shown in the image. This technique allows investigation not only of bare flakes (just laid out on the plastic substrate) but also of flakes embedded within the beam. The embedded graphene flakes can sustain tensile strains of over 1.…
We report a study of the ground state and metastable states of uranium dioxide using ab initio $\text{DFT}+\text{U}$ calculations. We highlight that in order to avoid metastable states and systematically reach the ground state of uranium dioxide with $\text{DFT}+\text{U}$, the monitoring of occupation matrices is cruc…
We report the effect of pH on the self-assembly process of Fmoc-diphenylalanine (Fmoc-FF) into fibrils consisting of antiparallel beta-sheets, and show that it results in two apparent pKa shifts of approximately 6.4 and approximately 2.2 pH units above the theoretical pKa (3.5). Using Fourier transform infrared (FTIR)…
The CIF is a universally recognised file format for transmission, archive, and retrieval of crystal structure results. It is based on a published and maintained specification, the basic points of which are described together with some definitions of terms, and advice on using the standard correctly and effectively. Us…
Zinc selenide (ZnSe) nanocrystals were synthesized in the cavity of the apoferritin from horse spleen (HsAFr), and two-dimensional ZnSe-ferritin nanodots were prepared by simple touch method on modified silicon surface. In the synthesis, ZnSe nanocrystals are encapsulated and growth is restricted to the internal dimen…
Magnetostrictive Fe–Ga wires 1–3 mm in diameter have been prepared using an innovative cost-effective approach—based on the Taylor wire method—that couples the advantages of high-temperature directional solidification and selective grain growth. Strict control of drawing processes has been shown to enable the introduc…
Deposition of high-crystal-quality ZnO nanocrystalline thin films (NCTFs) on a lattice-mismatched sapphire substrate was achieved using a pulsed laser deposition technique, and surface channel waveguides were fabricated by using a laser irradiation process. The optical structure defined on the film was characterized u…
Preparation of photo-responsive carbosilane dendrimers bearing 4-phenylazo-benzonitrile units on their molecular surface has been accomplished, and their both photo and thermal behaviors have also been characterized. These functional dendrimers suggest that the apparent molecular sizes of the cis-isomers are smaller t…
Oriented thin films of polyaniline (emeraldine base) were prepared by the friction transfer method by rubbing solid polyaniline against a glass substrate to form a thin coating film on the substrate. Characterization by polarized ultraviolet-visible-near infrared spectra showed the dichroic property of the films, sugg…
The role of the proteoglycans in the pathogenesis of nephrogenic systemic fibrosis (NSF) is unclear. We assessed expression of decorin, versican, and transforming growth factor beta1 (TGF-beta1) in skin specimens of 10 patients with biopsy-proven NSF and different control groups. Real-time reverse transcription-polyme…
The title compound, potassium cadmium metaborate, crystallizes in a monoclinic cell, featuring infinite one-dimensional CdO(5) chains and trigonal planar B atoms in hexagonal B(3)O(6) metaborate ions. The trigonal bipyramidal CdO(5) chains and metaborate ions are interlinked to form a three-dimensional framework, crea…
Abstract The renaturation of lysozyme assisted by a novel type of hairy particles was investigated. The particles used consisted of polystyrene (PS) cores onto which long chains of thermosensitive poly( N ‐isopropylacrylamide) (PNIPAM) were grafted as shell. Here, two kinds of particles were synthesized as sub‐micron…
Abstract Mit Rhodium beschichtete Katalysatoren ermöglichen durch katalytische Partialoxidation (CPOX) die Darstellung großer Mengen Wasserstoff aus höheren Kohlenwasserstoffen wie Benzin oder Diesel innerhalb weniger Millisekunden Kontaktzeit. Die Reaktionsenthalpie erzeugt Temperaturen von bis zu 1300 °C und erlaubt…
Among other uses, latexes are a successful alternative to solvent-borne binders for coatings. Efforts are made to produce hybrid nanostructured latexes containing an acrylic phase and an alkyd phase. However, after the film-forming process, the surfactant used to stabilize these latexes remains in the film, and its lo…
Rh(ttp)Cl ( 1a ) (ttp = 5,10,15,20-tetrakistolylporphyrinato dianion) was found to react with methanol at a high temperature of 150 °C in the presence of inorganic bases to give a high yield of Rh(ttp)CH 3 ( 2a ), up to 87%. Rh(ttp)H ( 1d ) is suggested to be the key intermediate for the carbon−oxygen bond cleavage.