Jason A. Widegren、John D. Aiken、Saim Özkâr 等 4 位作者2001-01-03Chemistry of Materials
A few years ago we developed a new kinetic method for following transition-metal nanocluster formation in which the resultant nanocluster's catalytic activity was used as a reporter reaction via the pseudoelementary step concept. This method in turn yielded insights into a new, broadly applicable mechanism of nanoclus…
Gold and Silver Nanoparticles Synthesis and ApplicationsNanocluster Synthesis and ApplicationsNanomaterials for catalytic reactions
Christoph Boettcher、Boris Schade、J.‐H. Fuhrhop2001-01-03Langmuir
Hot solutions (>80 °C) of N -dodecanoyl- ( d - or l -) serine in toluene or water were cooled to room temperature to give gels and were then vitrified for cryo-TEM investigations. Electron micrographs showed multilamellar aggregates with a repetitive density profile of 33 Å as constituents of tubules and vesicles in t…
Lipid Membrane Structure and BehaviorSurfactants and Colloidal SystemsSupramolecular Self-Assembly in Materials
Mohamed I. Zaki、Muhammad Hasan、Lata Pasupulety2001-01-03Langmuir
Adsorption and surface reactions of acetone vapor were observed on the title oxides at room and higher temperatures (up to 400 °C), using in situ infrared spectroscopy. The results were correlated with results of infrared spectroscopy of adsorbed pyridine, to assess impacts of the surface acid−base properties. It was…
Catalytic Processes in Materials ScienceGas Sensing Nanomaterials and SensorsCatalysis and Oxidation Reactions
Nobuhito Ishigure2001-01-02Radiation Protection Dosimetry
For the implementation of internal dosimetry in workplaces based on individual monitoring, information that relates the measurement results with the intake of radionuclides is required. The present work provides electronic look-up tables as a PC based support system for internal dosimetry. The tables contain the compu…
Radiation Dose and ImagingGraphite, nuclear technology, radiation studiesChemical Safety and Risk Management
M. Behboudnia、Parongama Sen2001-01-02Physical review. B, Condensed matter
We report a detailed study of the formation of semiconductor nanoparticles of the important compound ZnS and its Mn-doped variant ${\mathrm{Zn}}_{(1\ensuremath{-}x)}{\mathrm{Mn}}_{x}\mathrm{S}$ inside reverse micelle microreactors, by carefully varying the size of the reverse micelles at a fixed Mn concentration with…
Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films
M. Traving、Tilo Seydel、L. Kipp 等 8 位作者2001-01-02Physical review. B, Condensed matter
We report on a comprehensive study of the electronic structure of the layered semiconductor $1T\ensuremath{-}{\mathrm{HfS}}_{2}.$ The occupied and unoccupied band structure has been investigated by combined angle-resolved photoemission and inverse photoemission. The results are discussed in the context of a fully rela…
2D Materials and ApplicationsIron-based superconductors researchInorganic Chemistry and Materials
Р. Ф. Мамин、Takashi Inushima2001-01-02Physical review. B, Condensed matter
The appearance of additional states of an impurity under high doping levels is discussed. On the basis of a Fermi level calculation, a model for the conductivity of heavily boron-doped diamond is proposed. This model allows one to reproduce the temperature dependence of the conductivity and of the Hall coefficient for…
High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchElectronic and Structural Properties of Oxides
A. N. Titov、A. V. Kuranov、V. G. Pleschev 等 10 位作者2001-01-02Physical review. B, Condensed matter
The results of investigations of intercalated compounds ${\mathrm{Cr}}_{x}{\mathrm{TiSe}}_{2}$ and ${\mathrm{Co}}_{x}{\mathrm{TiSe}}_{2}$ by x-ray photoelectron spectroscopy and x-ray emission spectroscopy are presented. The data obtained are compared with theoretical results of spin-polarized band-structure calculati…
Chalcogenide Semiconductor Thin FilmsIron-based superconductors researchHeusler alloys: electronic and magnetic properties
Mohsen Sabouri-Ghomi、Nikolas Provatas、Martin Grant2001-01-02arXiv
We simulate solidification in a narrow channel through the use of a phase-field model with an adaptive grid. In different regimes, we find that the solid can grow in fingerlike steady-state shapes, or become unstable, exhibiting unsteady growth. At low melt undercoolings, we find good agreement between our results, th…
Materials ScienceSoft Condensed Matter
Ryuji Igarashi、Naoyasu Yamada、Yukio Iwaya 等 4 位作者2001-01-01IEEJ Transactions on Fundamentals and Materials
A mean rate controllable random pulser to use for a random pulse train simulator is presented in this paper. The control of the men rate is practiced with a personal computer by referring to the look-up table of time-variant rate. The random pulser with present design can be used as a model to simulate the random puls…
High voltage insulation and dielectric phenomenaPlasma Diagnostics and ApplicationsElectrostatic Discharge in Electronics
Satoru Yamamoto、Yoshihito Isshiki、Hisayoshi Kobayashi2001-01-01Journal of the Japan Institute of Metals and Materials
In the present work, the cohesive energy, energy fluctuation and Mulliken’s population of metal cluster have been calculated by the extended Hückel method. The behaviors of alloying elements and the stability of Mg alloys at high temperatures have been discussed by comparing the calculated results with the actual expe…
Magnesium Alloys: Properties and ApplicationsAluminum Alloys Composites PropertiesHydrogen Storage and Materials
Toshinori Isobe、Mamoru Omori、Toshio Hirai2001-01-01Journal of the Ceramic Society of Japan
Eutectic composite of Al2O3/Y3Al5O12 (YAG) was prepared by an arc discharge method and its microstructure and stability were investigated. The eutectic composition of Al2O3/YAG determined by electron probe micro analysis (EPMA) was Al2O3:Y2O3=81.6:18.4mol%. Basic eutectic microstructure was a twinned single crystal of…
Advanced ceramic materials synthesisPlasma Diagnostics and Applications
Tadashi Nagata2001-01-01JAPAN TAPPI JOURNAL
Environmental concern decreases consumption of organic solvents as a global trend. Silicones for release coating are also requested to move to solventless type from solvent type. In fact 80% of silicones for release coating application is already solventless type in North America and Europe. On the other hand, solvent…
Synthesis and properties of polymers
Hideki Sasaoka、Toshikatsu Miki2001-01-01Journal of the Society of Materials Science Japan
The In-Ti active fillers were examined for joining metallic copper (Cu) to aluminum nitride (AlN) ceramics. Brazing was carried out with In-Ti active brazing filler metals with various compositions, and the microscopic structure and mechanical strength of the Cu-filler-AlN-filler-Cu joint at various temperatures were…
Advanced ceramic materials synthesisAluminum Alloys Composites PropertiesAdvanced Welding Techniques Analysis
Masayuki Nakamura、Kazunori Kobayashi、Mitsuyuki KOBAYASHI2001-01-01Journal of the Japan Society for Precision Engineering
In a design of optical multilayer films at oblique incidence, reflectance and transmittance curves for two planes of polarizations (S and P polarizations) are different, so a large number of layers are required more than at normal one. Therefore the design process will be more complex. We have already developed the op…
Advanced optical system designOptical Coatings and Gratings
Kazuhiro Takahashi、Tsuyoshi INOUE、Shigeru Uchida2001-01-01鐵と鋼 : 日本鐡鋼協會々誌
It is said that in hot-rolling titanium surface defects are apt to occur by seizures between rolls and products. Authors have examined the effects of temperatures and lubricants on the tribological behavior of titanium strip surfaces contact with rolls using a hot rolling and sliding wear tester with commercially pure…
Mechanical stress and fatigue analysisTribology and Wear AnalysisMetal Alloys Wear and Properties
K. J. Shepperson、R. Eläßer、A. J. Thornton 等 5 位作者2001-01-01Phosphorus, sulfur, and silicon and the related elements
The results of the synthesis and the investigaiton of a number of multipodal and branched siloxane and silsesquixane liquid crystals is reported.
Surface Modification and SuperhydrophobicityAerogels and thermal insulationSilicone and Siloxane Chemistry
Kyeong-Seok Lee、Sunggi Baik2001-01-01Integrated ferroelectrics
Ferroelectric twin domain structures of epitaxial PbTiO3 thin films grown on various single crystal substrates were investigated in-detail by reciprocal space mapping techniques using synchrotron X-ray. Direct comparison with one-directional X-ray diffraction scan that is conventionally employed for structural charact…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAcoustic Wave Resonator Technologies
Koji Ioku、Akira Oshita、Hirotaka Fujimori 等 7 位作者2001-01-01Phosphorus Research Bulletin
Spherical particles of hydroxyapatite with β-tricalcium phosphate were prepared from spherical calcite particles by hydrothermal method. The spherical calcite particles of about 2.5mm in size as the starting materials were formed through the process which transformed hard water to soft water. The spherical calcite par…
Bone Tissue Engineering MaterialsCalcium Carbonate Crystallization and Inhibition
Yutaka Kawahara、Kazuaki Sugiura、S. Ogawa 等 4 位作者2001-01-01Sen i Gakkaishi
The dyeing behaviors and changes in fiber structure in supercritical CO2 fluid for several types of high-speed spun and regular fully oriented poly (ethylene terephthalate) (PET) fibers were compared. At lower temperature and pressure, the high-speed spun fibers, which had inherently larger crystallite sizes and lower…
Polymer crystallization and propertiesCarbon dioxide utilization in catalysisPolymer Foaming and Composites