Materials Literature
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Magnetoliposomes (ML′s) may be successfully applied for several purposes. A dimyristoylphosphatidyl‒choline‒based ML (ML‒2) sample was developed as a precursor of more complex thermal cancer therapy systems. The present study reports on morphology and magnetic resonance (MR) investigations carried out with the magneti…
We describe the electrosynthesis of a composite film consisting of polypyrrole and poly(1,5-diaminonaphthalene) (PPy-PDAN) on iron in neutral aqueous medium. The film structure was characterized by Raman and Fourier transform infrared spectroscopies. The composite film is composed first of layers of PDAN at the metal/…
Binary mixtures based on lactic acid derivatives were prepared and studied. Pure compounds differ in the type of linkage of the non-chiral chain to the molecular core, either keto or ether groups, and besides the SmA and SmC* phases they exhibit the antiferroelectric SmC A * or hexatic SmF(I)* phases, respectively. Ph…
In this article, possibilities for high-throughput single crystal structure determinations and analysis of results, currently being developed in the author's laboratory, are reviewed. Methods for the automated insertion of mounted crystals on the goniometer of a diffractometer, collection and processing of cell and in…
Aging effect of dense 8 mol % yttria-stabilized zirconia (8YSZ) ceramics with different microstructures has been studied. Spark-plasma sintered (SPS) ceramics consisting of submicrometer grains showed relatively slow conductivity degradation with aging time compared with conventionally sintered ceramics. Conductivity…
Carbon disulphide was used to modify the surface of silica gel phases containing amine moieties for the formation of four phases-immobilized dithiocarbamate derivatives (I–IV). Characterization of the surface modification by the organic modifier was accomplished by several means of instrumental analysis. These include…
The mechanical properties and deformation mechanisms of nano-polycrystalline (NPC) materials under tension are studied using molecular dynamics. The embedded atom method (EAM by Mishin et al. 1999) and the effective medium theory (EMT by Jacobsen et al. 1987) are adopted as the interatomic potentials of Al to investig…
The impurity-induced ferroelectric phase transitions in incipient perovskite ferroelectrics are discussed along with improper ferroelastic phase transitions. It is shown that the critical concentration of impurities is proportional to 1/ϵ3/2 and that the ferroelectric phase transitions probably suppress ferroelastic t…
Uniform dispersion of fine particles of poor wettability in molten steel is of essential importance for enhancing the efficiency of the steel refining processes. Although model investigations on the dispersion of fine particles of good wettability have extensively been carried out, those for fine particles of poor wet…
We have investigated the initiation and propagation of filiform corrosion on coated aluminum surfaces using a new experimental set-up for in situ Fourier transform infrared (FTIR) microspectroscopy and the scanning Kelvin probe. During the initiation partially hydrolyzed aluminum chloride was formed in a defect on the…
This paper is concerned with the development of low cost, brushless dc, high volume of production electrical machines, exploiting the special properties of compacted, insulated iron powder (or soft magnetic composite, SMC). The specific market for the application of this technology is the various electrical drives use…
During secondary recrystallization of grain oriented silicon steel, isolated grains are often observed in secondary-recrystallized Goss grains (matrix). In an extraction experiment, the crystallographic relations between each isolated grain and the matrix were investigated. Although the Σ9 grain boundary against Goss…
To understand a void formation mechanism in electroplated Cu interconnects used for Si-ULSI (ultra-large scale integrated) devices, microstructures of Cu films which were prepared by the electroplating technique using plating baths with or without organic additives were investigated by transmission electron microscopy…
SUMMARIES The utility of polarised attenuated-total-reflectance (ATR) FTIR spectroscopy was investigated for the identification of cellulosic fibres and characterisation of their state of degradation. Turning the polariser so that the electric vector is parallel (Epll) or perpendicular (Eprp) provides a means of asses…
The multiple melting behavior and the associated crystalline forms of poly(hexamethylene terephthalate) (PHT) in PHT–clay hybrids were comprehensively analyzed using differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD) and polarized-light microscopy (PLM). The intercalated morphology of the org…
By virtue of its spontaneous polarization (PS), a ferroelectric SmC* liquid crystal can be switched between two states corresponding to opposite molecular tilt orientations using an electric field, thus producing an ON-OFF light shutter between crossed polarizers. Considerable efforts have been made over the past deca…
Cathodoluminescence (CL) is the light that is emitted from a material irradiated by an electron beam. The present study was undertaken to show the applicability to biological studies of a scanning electron microscope (SEM) equipped with a high-sensitive cathodoluminescence detection system. For this purpose, we inject…
A novel cross-shaped porphyrin pentamer having four imidazolyl-porphyrinatozinc(II) moieties, one at each meso-position, was prepared. AFM measurements confirmed the formation of a large twodimensional porphyrin array structure: a thin layer of 6∼7 porphyrins was assembled over a 350 × 350nm2 area, representing linkag…
A previously developed 3D model 14 for the simulation of selective dissolution and passivation of alloys, based on a Monte Carlo method, has been expanded. The probabilities of dissolution used in the first model were set empirically as a function of the number of first nearest neighbors. In the present model the ener…
Precipitation behavior of intermetallic phases in ferrite matrix is investigated by transmission electron microscopy (TEM) in Fe-10Cr-1.4W-4.5Co (at%) alloys with and without 0.3 at%Si. It is intended to provide basic information for the alloy design of ferritic heat resistant alloys strengthened by intermetallic comp…