Yan Zhang、Guang Yang、E. T. Kang 等 7 位作者2002-08-01Surface and Interface Analysis
Abstract Fluoropolymer thin films have been deposited on (100)‐oriented single‐crystal silicon substrates via argon plasma sputtering of a poly(tetrafluoroethylene) (PTFE) target and plasma polymerization of 1H, 1H, 2H‐heptadecafluoro‐1‐decene (HDFD). The surface composition and molecular structure of the deposited fl…
Surface Modification and SuperhydrophobicityMetal and Thin Film MechanicsDiamond and Carbon-based Materials Research
H. El-Kishky2002-08-01IEEE Transactions on Dielectrics and Electrical Insulation
This paper presents the results of a project aimed at the development of reliable corona-suppression systems for high voltage rotating machines. These systems are based on both conducting and semi-conducting dry and B-stage tapes as well as paints of different resistivity. Three groups of anti-corona systems were deve…
High voltage insulation and dielectric phenomenaAerosol Filtration and Electrostatic PrecipitationThermal Analysis in Power Transmission
Karthikeyan Sharavanan、Hartmut Komber、Frank Böhme2002-08-01Macromolecular Chemistry and Physics
A series of aliphatic polyacetamidines (1) with the common structure [(CH2)mNC(CH3)NH]n was synthesized by the phenol-catalyzed melt polycondensation reaction of various aliphatic diamines with triethyl orthoacetate. The resulting polyacetamidines were characterized by 1H and 13C NMR spectroscopy. It could be sho…
Fuel Cells and Related MaterialsSynthesis and properties of polymersAntimicrobial agents and applications
Howard White、I. L. Hosier、D. C. Bassett2002-08-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTCylindrical Lamellar Habits in Monodisperse Centrally Branched AlkanesH. M. White, I. L. Hosier, and D. C. BassettView Author Information J.J. Thomson Physical Laboratory, University of Reading, Reading RG6 6AF, UK Cite this: Macrom…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesForce Microscopy Techniques and Applications
Claude Poleunis、Céline Rubio、Chantal Compère 等 4 位作者2002-08-01Surface and Interface Analysis
Abstract It is now well established that protein adsorption constitutes the first step of the mechanism leading to biofilm formation, which is a precursor of the biofouling. Biofouling is a major problem for any activity in seawater. In order to improve our basic knowledge of the biofilm formation mechanism, the role…
Analytical chemistry methods developmentPolymer Surface Interaction StudiesCalcium Carbonate Crystallization and Inhibition
B. Timmermans、Nathalie Vaeck、Annick Hubin 等 4 位作者2002-08-01Surface and Interface Analysis
Abstract The bonding and electronic structure of surface atoms is most often studied by XPS, where the energy shift of a photoelectron peak can be ascribed to a change in the chemical environment. Because three atomic levels are involved in the Auger emission process, the use of Auger spectroscopy to obtain this infor…
Semiconductor materials and devicesElectron and X-Ray Spectroscopy TechniquesSurface and Thin Film Phenomena
S. J. Lloyd、J. C. Loudon、Paul A. Midgley2002-08-01Journal of Microscopy
Magnetic domain walls in Nd2Fe14B have been examined using a series of energy-filtered Fresnel images in the field emission gun transmission electron microscope (FEGTEM). We describe the changes in the intensity distribution of the convergent wall image as a function of defocus, foil thickness and domain wall width. T…
Magnetic properties of thin filmsRare-earth and actinide compoundsMagnetic Properties of Alloys
Lada N. Puntus、V. F. Zolin、Valentina A. Kudryashova 等 7 位作者2002-08-01Physics of the Solid State
A ligand-cation charge transfer band was observed in the region of 360–400 nm in the Eu 3+ luminescence excitation spectrum of europium 3,4-pyridine-dicarboxylates, but was absent in the spectra of europium 2,6-and 2,3-pyridine-dicarboxylates. This band is due to noticeable energy transfer through a charge-transfer st…
Magnetism in coordination complexesRadioactive element chemistry and processingLanthanide and Transition Metal Complexes
Hiroyuki Inoue、Takashi Tamura、Nagisa Ehara 等 9 位作者2002-08-01FEMS Microbiology Letters
An isocitrate dehydrogenase (ICDH) with an unique coenzyme specificity from Acidithiobacillus thiooxidans was purified and characterized, and its gene was cloned. The native enzyme was homodimeric with a subunit of M(r) 45000 and showed a 78-fold preference for NAD(+) over NADP(+). The cloned ICDH gene (icd) was expre…
Bacterial Genetics and BiotechnologyEnzyme Structure and FunctionAmino Acid Enzymes and Metabolism
Alexei А. Belik、Fujio Izumi、S. Yu. Stefanovich 等 5 位作者2002-08-01Chemistry of Materials
A new phosphate, Ca 9 FeD(PO 4 ) 7, with a whitlockite-like structure was synthesized by treating Ca 9 Fe(PO 4 ) 7 with D 2 at 820 K. Mössbauer spectroscopy showed that the oxidation state of Fe in Ca 9 FeD(PO 4 ) 7 is +2. Ca 9 FeD(PO 4 ) 7 was paramagnetic in a temperature range from 5 to 300 K with an effective magn…
Crystal Structures and PropertiesNuclear materials and radiation effectsChemical Synthesis and Characterization
Jean‐Marc Haudin、Catherine Duplay、Bernard Monasse 等 4 位作者2002-08-01Macromolecular Symposia
Crystallization under shear of many different polypropylenes has been studied using a fiber pull-out device. It appears that growth can be considerably enhanced by flow. The best correlation is obtained with weight average molecular weight. Modeling the flow pattern gives access to the mechanical parameters at the gro…
Polymer crystallization and propertiesRheology and Fluid Dynamics StudiesMaterial Properties and Processing
Mathias Schulze、M. Lorenz、T. Kaz2002-08-01Surface and Interface Analysis
Abstract Gas diffusion electrodes for electrochemical devices frequently consist of polytetrafluroethylene (PTFE) and carbon black‐supported catalysts. The hydrophilic or hydrophobic character determines the wetting behaviour, which is important for media transport in the gas diffusion electrodes. The main components…
Supercapacitor Materials and FabricationAdvanced Sensor and Energy Harvesting MaterialsConducting polymers and applications
Huiqing Fan、Gun‐Tae Park、Jong‐Jin Choi 等 4 位作者2002-08-01Journal of the American Ceramic Society
A sol–gel‐derived Pb(Mg 1/3 Nb 2/3 ) 0.7 Ti 0.3 O 3 (PMNT) thin film was prepared using spin coating and a PbO cover coat technique. The amount of lead excess in the precursor solution had significant effects on the phase development and microstructure of the PMNT film. The PbO cover coat proved to be effective on sup…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsMicrowave Dielectric Ceramics Synthesis
Arkadi Berezovski、Gérard A. Maugin2002-08-01Journal of Thermal Stresses
The propagation of thermoelastic waves and phase-transition fronts is considered in a unified manner on the basis of thermodynamic consistency conditions following from the thermodynamics of discrete systems. Distinct consistency conditions are used in the bulk (for thermoelastic waves) and at the phase boundary (wher…
Thermoelastic and Magnetoelastic PhenomenaHigh-Velocity Impact and Material BehaviorElasticity and Wave Propagation
Gianni Zotti、Sandro Zecchin、Gilberto Schiavon 等 4 位作者2002-08-01Chemistry of Materials
Various 2,2‘-bipyrroles N -substituted with alkyl, alkylsulfonate, or alkylammonium moieties have been anodically coupled to polymers. The polymers were characterized by cyclic voltammetry, UV−vis and FTIR spectroscopies, EQCM, and in situ conductivity. Coupling of dipyrroles instead of pyrroles minimizes the introduc…
Electrochemical sensors and biosensorsConducting polymers and applicationsAnalytical Chemistry and Sensors
T. Mitate、Yoshiko Sonoda、N. Kuwano2002-08-01physica status solidi (a)
The applicability of transmission electron microscopy (TEM) to determine polarity was examined for GaN, ZnO, AlN and GaAs. The adopted methods are the TEM–EDS (energy dispersive X-ray spectroscopy) and the conventional convergent beam electron diffraction (CBED) methods. TEM observations and dynamical electron diffrac…
ZnO doping and propertiesGaN-based semiconductor devices and materialsSemiconductor materials and interfaces
David Valladares、Shigeyuki Toki、Taner Z. Sen 等 5 位作者2002-08-01Macromolecular Symposia
A newly developed real time spectral birefringence technique was implemented to follow the coupled relationships between birefringence, true stress and true strain behavior of varying crosslink density natural rubber vulcanizates at room temperature. It was shown that the stress optical law is valid even at early stag…
Liquid Crystal Research AdvancementsPolymer Nanocomposites and PropertiesSurfactants and Colloidal Systems
Hu Yan、Masashi Kajita、Naoki Toshima2002-08-01Macromolecular Materials and Engineering
The environmentally benign polymerization of aniline provided polyaniline with an emeraldine structure by using iron(III) and ozone which is easily converted from oxygen in air. The influence of the reaction temperature upon the molecular weight of the polyaniline in this system is different from that in the polymeriz…
Electrochemical sensors and biosensorsConducting polymers and applicationsAnalytical Chemistry and Sensors
Ban Alkhairalla、N. Boden、Edward M. Cheadle 等 13 位作者2002-08-01Europhysics Letters (EPL)
We demonstrate that it is possible to achieve exceptionally fine control over the anchoring of liquid crystals via the use of semi-fluorinated self-assembled monolayers of varying spacer length. We use this approach to map the detailed shape of an anchoring transition surface in thermodynamic phase space and to explor…
Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsAdhesion, Friction, and Surface Interactions
Maximino Avendaño‐Alejo、Orestes N. Stavroudis、Ana Rosa Boyain y Goitia2002-08-01Journal of the Optical Society of America A
Huygens's principle is used to derive equations for tracing the extraordinary ray in a uniaxial crystal when the crystal axis is normal to the refracting surface. Snell's law is used to trace ordinary rays that lead to an array of ordinary spherical wavelets centered on the refracting surface. Each spherical wavelet i…
Liquid Crystal Research AdvancementsOptical measurement and interference techniquesOptical Polarization and Ellipsometry