Materials Literature
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Abstract Thin dense films composed of a thermoplastic elastomer [polystyrene‐block‐poly(ethylene butylene)‐block‐polystyrene triblock copolymer (SEBS)] and two polyolefins, poly(ethylene‐ co ‐ethylacrylate) and poly(ethylene‐ co ‐propylene), were obtained by blow molding, uniaxial hot stretching, and cooling to room t…
Abstract Conductive‐tip atomic force microscopy (C‐AFM) is a powerful tool for investigating the electrical characteristics of phase‐change materials commonly used for electronic and optical data storage. We demonstrate the usefulness of this technique by examining the electrical conductivity of crystalline marks reco…
Tauschgeschäfte: Der bidirektionale spontane Transfer von stimuliresponsiven, mit Polymerbürsten beschichteten Goldnanopartikeln (AuNPs) durch die Öl-Wasser-Phasengrenzfläche wurde realisiert (siehe Bild). Der Transfer der AuNPs vom Wasser zum Öl wird durch die Ionenstärke des Wassers bestimmt, während der Transfer vo…
Early in the history of modern science it was suggested that the regular external form of crystals (their morphology) implied an internal regularity. Visual inspection of many different crystals led to the realization that they all corresponded to one of only seven regular shapes called the seven crystal systems. Whic…
The mechanical properties, morphology, crystallization, and melting behaviors and nonisothermal crystallization kinetics of poly (trimethylene terephthalate)(PTT)/maleinized acrylonitrile-butadiene-styrene (ABS-g-MAH) blends were investigated by an impact tester, polarized optical microscopy, and differential scanning…
Microstructure plays an essential role in the attractive properties of the duplex stainless steels (DSSs) such as toughness and corrosion resistance. These properties are obtained by an adequate balance between the fractions of the ferrite and austenite phases, which can be modified when DSSs are welded. Besides the u…
A facile approach has been developed for the preparation of various morphologies of Au-Ag(2)Te nanomaterials (NMs) that exhibit strong photocatalytic activity. Te NMs (nanowires, nanopencils, and nanorice) were prepared from TeO(2) in the presence of various concentrations (16, 8, and 4 M) of a reducing agent (N(2)H(4…
Abstract This work is aimed at understanding the site occupancies of Ce 3+ ions in NaSr 4 (BO 3 ) 3 by luminescence spectra. A series of Ce 3+ -doped NaSr 4 (BO 3 ) 3 powder samples are prepared by a traditional high-temperature solid-state reaction technique. The luminescence properties in the VUV–UV–vis range are st…
Calculable results: Complex density functional calculations and spin distribution analyses have been performed for planar and saddled iron(III) porphyrin complexes (see picture). The spin populations and the extent of the interactions between the metal and the porphyrin orbitals were determined, which can explain the…
Abstract Vanadium oxide thin films were prepared by DC reactive magnetron sputtering at substrate temperatures ranged from room temperature to 400 °C, and the effects of substrate temperature on microstructure, optical, and electrical properties of the films were analyzed. XRD spectra showed that the main component of…
We show here a strategy to predict the crystal structure, formulate, and prepare new noncentrosymmetric (NCS) bismuth-phosphate based compounds. It is based on the cooperative-arrangement of polar building units (BUs) which can be created at particular stoichiometric conditions. The arrangement of such BUs into NCS co…
We have used steady-state and time-resolved emission measurements to characterize interfacial electron transfer, or electron injection, from CdSe quantum dots (QDs) to molecularly linked TiO 2 nanoparticles. Electrons were injected from both band-edge and trap states on relatively fast (<10 –8 s) and slow (>10 –8 s) t…
The design of ungrounded meander line inductors (UMIs) and ungrounded interdigital capacitors (UICs) employed in the practical realisation of a planar ungrounded composite right-/left-handed (UCRLH) metamaterial is presented. Accurate lumped-element circuit models are proposed based on partial element theory and confo…
Abstract We present studies of the structure and stability of catalytic gold nanoparticles through in situ aberration‐corrected electron microscopy to investigate the effect of heating on the nature of the identified atomic active sites. Low coordination surface atoms are replaced by atomically clean surface facets th…
Different CuSi composite nanorods with 0-100 at.% Cu were fabricated by an oblique angle co-deposition technique. The effects of increasing Cu during deposition on the morphologies, structures and properties were investigated. During co-evaporation, the addition of Cu decreases the nanorod width and height but increas…
Hydrothermal treatment of KMnO4 and graphene flakes (GFs) leads to MnO2 nanosheets decorated on GFs. The resulting MnO2/GF (MG) composite has been tested as a supercapacitor electrode in aqueous electrolyte and found to exhibit good cycling stability with a specific capacitance of 147 Fg−1 at a current density of 5 Ag…
The use of hot-melt extrusion for preparing homogeneous API-excipient mixtures is studied for miconazole-PEG-g-PVA [poly(ethylene glycol)-poly(vinyl alcohol) graft copolymer] solid dispersions with a 5 cm(3) table-top, twin-screw corotating microcompounder (DSM Xplore). Phase behavior of PEG-g-PVA, miscibility of mico…
The aim of this work is to describe the resistance of ultra high performance fibre reinforced concrete (UHPFRC) to projectile impact. The main goal is to find an optimum fibre content in the UHPFRC mixture with respect to the resistance to projectile impact, strength and workability. In addition, the authors describe…
The changes in fast dynamics of HP35 with a double CN vibrational dynamics label (HP35-P(2)) as a function of the extent of denaturation by urea were investigated with two-dimensional infrared (2D IR) vibrational echo spectroscopy. Cyanophenylalanine (PheCN) replaces the native phenylalanine at two residues in the hyd…
The reactivity of Cu monolayer (ML) and bilayer films grown on Ru(0001) towards O(2) and H(2) has been investigated. O(2) initial sticking coefficients were determined using the King and Wells method in the incident energy range 40-450 meV, and compared to the corresponding values measured on clean Ru(0001) and Cu(111…