Materials Literature
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The crystallization of glycine and l -phenylalanine from water−isooctane microemulsions stabilized by AOT (sodium di-2-ethylhexyl sulfosuccinate) has been investigated. Crystallization phenomena were strongly affected by the localization of the solubilized molecules within the microemulsion droplets. In the case of gl…
<abstract language="eng">Adsorption of cationic dyes on clays can be used as a model for the interactions between organic compounds and these minerals. Cationic dyes like methylene blue are used to study these interactions because of the spectroscopic changes observed when their molecules are adsorbed on clay su…
Abstract Molecular dynamics simulations were performed of the adsorption of methylene blue (MB) on model beidellite, montmorillonite, and muscovite mica surfaces, using a previously determined empirical force field developed for dioctahedral clays. The simulations show that the adsorption of MB on mineral surfaces can…
Abstract The clay mineralogy of Upper Permian–Lower Cretaceous mudstones from East Greenland has been investigated by X-ray diffraction (XRD), atomic force microscopy (AFM) and thermal analysis in order to evaluate long-term trends in provenance and palaeoclimate and to detect possible volcanic events. The Upper Permi…
Abstract Mesoporous TiO2 with well-defined spherical morphologies has been synthesized under quiescent condition via the template-assisted slow hydrolysis of titanium alkoxide in environmental humidity.
Liquid crystal alignment layers of a high T g polymer containing an azobenzene moiety are prepared by photofabrication of a surface relief grating (SRG). The interference pattern of a circular and linearly polarized Ar+ laser beam generated the surface relief grating and the morphology was detected by atomic force mic…
The effects of heating rate on the sintering behavior and the dielectric properties of Ba 0.7 Sr 0.3 TiO 3 ceramics prepared by boron‐containing liquid‐phase sintering were investigated. When 0.5 wt% B 2 O 3 was added to Ba 0.7 Sr 0.3 TiO 3 , sintering was achieved at ∼1150°C, and the overdoped B 2 O 3 did not form an…
This paper describes the chemical, thermal and thermomechanical characterization of curaua fiber. The research of the thermal and thermomechanical properties of natural fibers is of major interest, considering their increasing utilization in several applications, and the large temperature range to which the fibers are…
The inhibition of protein adsorption to the surfaces of biomedical devices is a crucial requirement for avoiding implant-associated infections or thrombus formation on blood-contacting artificial surfaces and thus for increasing the long-term biocompatibility of the devices. Here, the use of surface plasmon resonance…
A new evaluation method and its application are discussed in detail for the determination of some important statistical parameters of a dislocation assembly, namely the average dislocation density, the average fluctuation of the dislocation density and the average polarization, from the X-ray diffraction line profile.…
Effects of film stresses on the phase stability and various ferroelectric properties of the epitaxially oriented $\mathrm{Pb}(\mathrm{Zr},\mathrm{Ti}){\mathrm{O}}_{3}$ thin film were theoretically investigated. For this purpose, a two-dimensional thermodynamic model was developed using the Landau-Devonshire phenomenol…
Abstract A study is presented of increasing the toughness of Cyclic Olefin Copolymer (COC) while maintaining its optical transparency. The COC consists of a random copolymer of ethylene and norbornene, and the impact modifiers consist of thermoplastic elastomers. It is shown that several requirements must be satisfied…
Devitrification of a frit (glass) based on the oxide system SiO 2 –Al 2 O 3 –ZnO–CaO was studied. The following major crystalline phases were identified: gahnite (ZnAl 2 O 4 ), willemite (Zn 2 SiO 4 ), and a solid solution exhibiting an anorthite structure. A kinetic model was used to fit the experimental results. The…
The four compounds in the series from chloro[subphthalocyaninato]boron(III) to chloro[subnaphthalocyaninato]boron (III) where synthesized in a one-pot reaction. To obtain a more soluble set of compounds, the mixture was then reacted with the sodium salt of trihexylsilanol. This mixture was separated by chromatography…
This article consists of the two parts. In the first part the nature of jute fiber, productivity, advantages, disadvantages, its composition etc. have been described. The jute fiber is also compared with the glass fiber. Inspite of some advantages, this natural fiber possess some drawbacks and thus needs chemical modi…
In situ whisker growth was observed during heat treatment of allylhydridopolycarbosilane (AHPCS) and SiC powder in the temperature range of 1250°–1350°C. TEM equipped with an electron energy loss spectrometer (EELS) verified that the banded whiskers are twinned single‐grained β‐SiC. Convergent beam electron diffractio…
Article A model for the adsorption of polyelectrolytes on pulp fibers: Relation between fiber structure and polyelectrolyte properties was published on December 1, 2000 in the journal Nordic Pulp & Paper Research Journal (volume 15, issue 5).
Formulae for estimating statistical uncertainties in quantitative phase analysis using the Rietveld method and the whole-powder-pattern decomposition method have been derived. The relative magnitude of statistical uncertainty for a derived weight fraction of a component in a mixture is given by σ( W m )/ W m = (1/ W m…
Translucent, colored magnets, which would open up new possibilities in optomagnetic devices, could potentially be realized in the form of molecule-based magnets composed of metal complexes. A new class of colored, magnetic thin films, prepared electrochemically and composed of KIaVII/IIIxCrII1–x[CrIII(CN)6]y, is repor…
Nonstoichiometric 10‐mol%‐excess‐BaO–BaTiO 3 (Ba 1.1 TiO 3.1 ) thin film grown on a (100) SrTiO 3 substrate consisted of heteroepitaxial c ‐axis‐oriented BaTiO 3 perovskite crystals including Ruddlesden–Popper planar faults and nanometer‐scale multiple (111) twin lamellae. High‐resolution electron microscopy and elect…