Materials Literature
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A new series of icosahedral quasicrystals has been found in Zn 75 M 10 Sc 15 (M = Ag, Au, Pd and Pt) as-cast alloys. Electron and powder X-ray diffraction analyses indicated that these quasicrystals are of the P-type (primitive type) and have six-dimensional lattice parameters a 6D =0.7112–0.7151 nm. The quasicrystals…
We revealed the first example of a crystalline lithium aluminate nanotube with thermal stability prepared by a surfactant-driven hydrothermal procedure. The obtained nanotube showed an interesting structure unknown thus far for oxide nanotubes such as cylindrical bundles of lithium aluminate subnanotubules. These nove…
Chiral magnets exhibit two important optical properties: intrinsic optical activity and the Faraday effect. Two‐dimensional chiral magnets reveal these effects at higher critical temperatures than their one‐dimensional counterparts. On page 4810 ff., K. Inoue and co‐workers describe the structure and magnetic properti…
Many interesting and complicated patterns in the applied sciences are formed through transient pattern formation processes. In this paper we concentrate on the phenomenon of spinodal decomposition in metal alloys as described by the Cahn-Hilliard equation. This model depends on a small parameter, and one is generally…
Plasma-enhanced chemical vapor deposition has been used to form electrochromic tungsten oxide thin films from gas mixtures of WF6, O2, and H2. The chemistry of this system was investigated using optical emission spectroscopy. The plasma composition and deposition rate were examined as a function of operating condition…
Bovine seminal ribonuclease is a unique case of protein dimorphism, since it exists in two dimeric forms, with different biological and kinetic behavior, which interconvert into one another through three-dimensional swapping. Here we report the crystal structure, at 2.2 A resolution, of the unswapped form of bovine se…
Abstract One method to reduce fouling is to extend the induction time by a defined modification of the interfacial interactions between the heat transfer surface and the crystalline deposit. Since these interactions are a result of both molecular and mechanical forces, two approaches for fouling mitigation have been d…
The adsorption kinetics of human serum albumin (HSA) on CH3- and COOH-terminated self-assembled monolayers (SAMs) has been investigated using radioassays and atomic force microscopy (AFM). On both surfaces, the amount of HSA adsorbed reached a plateau after 30 min. The plateau level was higher on the CH3 compared to t…
Abstract Supramolecular polymerization, that is, the self‐assembly of polymer‐like materials through the utilization of the noncovalent bond, has been a developing area of research over the last decade. In this article, we report the synthesis of nucleobase‐terminated ( N 6 ‐anisoyl‐adenine and thymine) low‐molecular‐…
Abstract Mechanical properties such as the tensile modulus, yield (break) strength, and elongation to break (or yield) are measured for multiphase poly(ether ether ketone) (PEEK)/poly(aryl ether sulfone) (PES) blends. Specimens with three different levels of thermal histories (quenched, as‐molded, and annealed) are pr…
The technique for using conoscopy to determine the optical orientation and birefringences of stretched polymer films is presented here in detail. The method is nondestructive and has the capacity for implementation both off-line and online during processing. Analysis was performed on films of polyethylene naphthalate…
Electrophoretic deposition from mixtures of CdSe and γ-Fe 2 O 3 nanocrystals forms identical films on the positive and negative electrodes composed of both types of nanocrystals. In contrast, the electrophoretic deposition from mixtures of CdSe and Au nanocrystals forms films composed of only CdSe nanocrystals, and th…
Abstract The tensile and impact resistance of impact‐modified poly(ethylene terephthalate) (PET) is investigated. The impact modifiers are polyolefin‐based elastomers or elastomer blends containing glycidyl methacrylate moieties to improve the adhesion with the polyester. The tensile properties are measured on injecti…
Abstract Cross‐linked polyethylene (XLPE) has been widely adopted as insulating material for high‐voltage power cables up to 500 kV. Further improvement of electrical and thermal properties on insulating material is required in order to increase cable operation efficiency. Therefore, the development of novel insulatin…
A modified chemical bath deposition method has been developed to prepare CdSe and HgSe semiconductor thin films in cubic modification, based on the chemical reaction of complexed cadmium acetate, mercuric nitrate with sodium selenosulphate in an aqueous ammoniacal medium at 5 °C. The films were characterized by using…
Abstract Epoxy foams were prepared from the commercial system (LY 5054 epoxy resin, HY 5054 amine as curing agent, and DY 5054 siloxane as foaming agent) supplied by Ciba‐Geigy. From the differential scanning calorimeter results the optimal epoxy–amine ratio was determined. A maximum T g ∞ value of 85°C was found for…
Der CO-induzierte Abbau von Rh-Clustern auf einer Al2O3-Oberfläche wurde mithilfe der energiedispersiven Röntgenabsorptionsspektroskopie (DXAFS) mit einer Zeitauflösung von 100 ms in Elementarschritten verfolgt (siehe Bild). Diese verbesserte, zeitaufgelöste DXAFS-Technik ermöglicht die detaillierte Untersuchungen der…
The disintegration of Rh clusters on an Al2O3 surface induced by CO, the elementary steps, and timescale of the reaction are analyzed for the first time by energy-dispersive X-ray absorption fine structure (DXAFS) at a time resolution of 100 ms (see picture). This study by the improved time-resolved DXAFS technique pr…
A ferroelectric field effect approach is presented for modulating magnetism in the colossal magnetoresistive oxide ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{MnO}}_{3}$ (LSMO). The ferromagnetic Curie temperature of ultrathin LSMO films was shifted by 35 K reversibly using the polarization field of the…
The sulfur–nitrogen radical p-O2NC6F4CNSSN. (see packing diagram) provides a rare example of an organic radical that orders ferromagnetically above 1 K. It is suggested that the near orthogonal nature of the singly occupied molecular orbitals of neighboring molecules is important for such behavior to be observed.