Shu Ling Wu、William DeW. Horrocks1997-01-01Journal of the Chemical Society Dalton Transactions
Excitation spectroscopy of the 7 F 0 → 5 D 0 transition of Eu 3+ in the visible has been used to quantitate the complexation of this ion to various chelating carboxylate ligands including 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetate (dota). Two methods were employed. The first involves the measurement of condi…
Analytical chemistry methods developmentRadioactive element chemistry and processingLanthanide and Transition Metal Complexes
C.W. Cheng、H.C. Man、F.T. Cheng1997-01-01IEEE Transactions on Magnetics
Various surface coatings, including duplex Ni(undercoat)/Cr(topcoat), multilayer Ni/Cu/Ni/Cr, Zn, bright Ni, bright Au, and black epoxy were applied to improve the corrosion resistance of the Nd-Fe-B magnet. The corrosion behavior of the surface-coated magnets was studied using Normal and Acetic Acid Salt Spray Tests.…
Magnetic properties of thin filmsMagnetic Properties and ApplicationsMagnetic Properties of Alloys
Maurice de Koning、Alex Antonelli1997-01-01Physical review. B, Condensed matter
We study the application of the adiabatic switching molecular dynamics method to determine bulk and vacancy-formation Gibbs free energies as a function of temperature at zero pressure for copper. The bulk free energy has been determined through isochoric isothermal switching procedures in which a system consisting of…
Advanced Chemical Physics StudiesMaterial Dynamics and PropertiesTheoretical and Computational Physics
Arild Moen、D. Nicholson、Magnus Rnning 等 6 位作者1997-01-01Journal of the Chemical Society Faraday Transactions
The local environments about the cobalt atoms in as-synthesised, calcined and hydrogen-reduced CoSAPO-34 have been studied by X-ray absorption spectroscopy. Calcination of the as-synthesised material and reduction in hydrogen of the product of calcination were carried out at 450 °C and for 6 h, respectively. The resul…
Metal-Organic Frameworks: Synthesis and ApplicationsMesoporous Materials and CatalysisPolyoxometalates: Synthesis and Applications
Jinwoo Cheon、David S. Talaga、Jeffrey I. Zink1997-01-01Journal of the American Chemical Society
ZnS thin films are made by laser driven chemical vapor deposition (CVD) from a single-source precursor, Zn(S 2 COCHMe 2 ) 2 under vacuum conditions. Photofragments in the gas phase are identified simultaneously by luminescence spectroscopy. The laser selectively activates the initial decomposition of the precursor and…
Luminescence Properties of Advanced MaterialsQuantum Dots Synthesis And PropertiesIon-surface interactions and analysis
Wai Keung Mo、D.K.W. Cheng、Y.S. Lee1997-01-01IEEE Transactions on Industrial Electronics
The effect of DC flux on the core loss is examined for the practical range of power and frequency. Relevant core loss equations are derived and applied to an optimization algorithm to determine the minimum core loss at a given ratio of s (DC flux density to AC peak flux density). It has been found that the curves of h…
Silicon Carbide Semiconductor TechnologiesMagnetic Properties and ApplicationsNon-Destructive Testing Techniques
D. Atkinson、P.T. Squire1997-01-01IEEE Transactions on Magnetics
The tensile stress dependence of magneto-impedance (MI) in CoSiB and CoFeSiB amorphous wires is reported. A phenomenological model for the transverse susceptibility based on a simple domain structure, and which includes the magneto-elastic energy contribution, is used. The square-root of the transverse susceptibility…
Magnetic properties of thin filmsMetallic Glasses and Amorphous AlloysMagnetic Properties and Applications
Yishan Yu、Kyung‐Ju Choi1997-01-01Polymer Engineering and Science
Abstract Blends composed of poly(ethylene terephthalate) (PET) and poly(butylene terephthalate) (PBT) were melt‐mixed in a Brabender cam mixer at different mixing speeds. The glass transition ( T g ) and the crystallization behavior of the blends from glassy state were studied using DSC. It was found that although the…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesRheology and Fluid Dynamics Studies
Michael A. Rooke、Peter M. A. Sherwood1997-01-01Chemistry of Materials
The paper reports a study of CVD deposited thin films (1−5 μm) of an Si−B−N−C ceramic polymer coating onto a tow of carbon fibers. The coating process was developed with the goal of good adhesion and good oxidation protection for the fibers when exposed to a reactive oxygen environment. Core and valence band photoemis…
Advanced ceramic materials synthesisSemiconductor materials and devicesGa2O3 and related materials
V. Ya. Shur、E. L. Rumyantsev1997-01-01Ferroelectrics
We review the experimental and theoretical investigations of the kinetics of ferroelectric domain structure in single crystals and thin films. The significant influence of the retardation of screening process on the evolution of the domain structure is pointed out and is demonstrated in various experimental situations.
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesX-ray Diffraction in Crystallography
Milena Salvo、Patrick Lemoine、Monica Ferraris 等 5 位作者1997-01-01Journal of the American Ceramic Society
Carbon‐fiber‐reinforced carbon (CfC) composites have been joined by using different joining agents: metals (silicon, aluminum, and titanium), an intermetallic compound (magnesium silicide, Mg 2 Si), and glasses (borosilicates and zinc borates). These joining agents have been chosen by considering their possible use in…
Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchIon-surface interactions and analysis
Masayuki Futamata1997-01-01Applied Optics
An attenuated total reflection (ATR) method to excite the surface plasmon polariton (SPP) was applied to gold and copper to improve the sensitivity level of classical Raman spectroscopy. Reflectivity and Raman band intensity from copper phthalocyanine (CuPc) adsorbates on these metals were measured in an Otto configur…
Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchSpectroscopy Techniques in Biomedical and Chemical Research
Sebastián C. Reyes、J. H. Sinfelt、Gregory J. DeMartin 等 5 位作者1997-01-01The Journal of Physical Chemistry B
Effective diffusivities and adsorption uptakes have been measured in mesoporous silica particles using frequency-modulated perturbation methods. Intraparticle diffusivities in the Knudsen regime were measured for N 2, Xe, Xe/N 2 mixtures, and isobutane at low pressure and several temperatures. The measured diffusiviti…
Catalytic Processes in Materials ScienceZeolite Catalysis and SynthesisMesoporous Materials and Catalysis
Shuichi Kojima、Yukino Kuriki、Takao Yoshida 等 5 位作者1997-01-01Proceedings of the Japan Academy Series B
The α3-peptide, which comprises three repeats of the seven-residue sequence Leu-Glu-Thr-Leu-Ala-Lys-Ala, was designed to form an amphipathic α-helix with a hydrophobic surface by Leu residues and a hydrophilic surface by Glu and Lys residues, thus yielding a coiled coil or a helical bundle structure through their asso…
Bacteriophages and microbial interactionsSupramolecular Self-Assembly in MaterialsBiopolymer Synthesis and Applications
Ruiqi Long、Yaping Huang、H. L. Wan1997-01-01Journal of Raman Spectroscopy
The activation of molecular oxygen on the surface of cerium oxide and the reactivities of surface oxygen species with methane and ethane were studied by means of in situ confocal microprobe Raman spectroscopy in the temperature range 298–1023 K. The results showed that O22-, O2- and O2δ- (0<δ<1) adspecies formed on th…
Catalytic Processes in Materials ScienceAdvancements in Solid Oxide Fuel CellsCatalysis and Oxidation Reactions
Vincent A. Grillo、E.J. Seddon、Craig M. Grant 等 7 位作者1997-01-01Chemical Communications
Addition of the bis(β-diketone) ligand L [L = 1,3-bis(3-phenyl-3-oxopropanoyl)benzene] to a suitable source of M III ions (M = Ti, V, Mn, Fe) in a L:M = 3:2 ratio gives the dinuclear products [M 2 L 3 ], which have a triple-helical structure.
Supramolecular Chemistry and ComplexesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Paul H. Steen、Christian Karcher1997-01-01Annual Review of Fluid Mechanics
▪ Abstract Casting of molten metals against a spinning wheel substrate is considered. Issues of fluid mechanics divide between steady and unsteady behavior (stability). The previous work on steady casting is hung on a framework provided by the long-puddle model of planar flow casting. Heat and fluid flow interact only…
Solidification and crystal growth phenomenaMetallurgical Processes and ThermodynamicsFluid Dynamics and Thin Films
Bengt Wälivaara、Agneta Askendal、Ingemar Lundström 等 4 位作者1997-01-01Journal of Biomaterials Science Polymer Edition
Protein adsorption and complement activation were studied on thin evaporated films of titanium (Ti). The surfaces were cleaned in either a radio frequency (RF) plasma unit, or washed sequentially in trichloroethylene, acetone, ethanol, and water. Both methods resulted in hydrophilic surface with low carbon contaminati…
Polymer Surface Interaction StudiesMolecular Junctions and NanostructuresCoagulation, Bradykinin, Polyphosphates, and Angioedema
Masato Enokizono、Naoya Soda1997-01-01IEEE Transactions on Magnetics
This paper presents a new expression of the vector magnetic properties under alternating and rotating flux conditions. The expression is defined by an improved reluctivity tensor based on measured results. Moreover, the expression is more accurate than conventional expressions about the approximation of magnetic prope…
Electric Motor Design and AnalysisMagnetic Properties and ApplicationsElectromagnetic Simulation and Numerical Methods
Andrzej Anderko、S. J. Sanders、Robert Young1997-01-01CORROSION
A method was developed for construction of stability diagrams for metals in the presence of realistically modeled aqueous solutions. The method was based on a comprehensive thermodynamic model that combines the Helgeson-Kirkham-Flowers (HKF) equation of state for standard-state properties with a solution nonideality m…
Hydrogen embrittlement and corrosion behaviors in metals