Teruhisa Komura、G.Y. Niu、Takahiro Yamaguchi 等 5 位作者2004-09-28Electroanalysis
Abstract This paper describes electrochemical characteristics of poly(methylene blue) electrolytically deposited on glassy carbon and examines the electrocatalytic activity of the polymer toward oxidation of the coenzyme NADH. Redox‐active properties of the cationic polyelectrolyte arose from both electron self‐exchan…
Electrochemical sensors and biosensorsConducting polymers and applicationsAnalytical Chemistry and Sensors
Woo Yeong Cho、Beak-Hyung Cho、Byung-Gil Choi 等 15 位作者2004-09-28OpenAlex
A non-volatile 64 Mb phase-transition RAM is developed by fully integrating a chalcogenide alloy GST (Ge/sub 2/Sb/sub 2/Te/sub 5/) into 0.18 /spl mu/m CMOS technology. This alloy is programmed by resistive heating. To optimize SET/RESET distribution, a 512 kb sub-core architecture, featuring meshed ground line, is pro…
Optical Network TechnologiesPhotonic and Optical DevicesPhase-change materials and chalcogenides
Cédric R. Mayer、Catherine Roch‐Marchal、Hélène Lavanant 等 7 位作者2004-09-28Chemistry - A European Journal
In the field of functionalized polyoxometalates, organosilyl derivatives of polyoxotungstate constitute a special class of hybrid organic-inorganic system. The first organosilyl derivative of the monovacant Dawson heteropolyoxotungstate [alpha2-P2W17O61]10- was obtained by three different methods. The use of two organ…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis
Vladimir A. Izumrudov、Eugenia Kharlampieva、Svetlana A. Sukhishvili2004-09-28Macromolecules
We report salt-induced phase separation of polyelectrolyte complexes in solution correlates with deposition of polymer multilayers at a surface. Multilayer growth was followed in situ using FTIR-ATR (Fourier transform infrared spectroscopy by attenuated total reflection). The polymer system was quaternized poly(4-viny…
Polymer Surface Interaction StudiesForce Microscopy Techniques and ApplicationsAdhesion, Friction, and Surface Interactions
Xiang Zhou、Chengzheng Hu、Ping Gong 等 4 位作者2004-09-28Physical Review B
Quasicrystals have both positional and orientational long-range order. Thus, they are essentially anisotropic. However, both theory and experiment show that ordinary linear elastic property (linear phonon elasticity) is isotropic for quasicrystals. To detect the quasicrystal anisotropy the nonlinear elasticity should…
Quasicrystal Structures and PropertiesMineralogy and Gemology Studies
Cury Suryanarayana2004-09-28OpenAlex
Nanocrystalline materials are single-or multiphase polycrystalline solids with a grain size of the order of a few nanometers (1 nm = 109 m = 10 A˚), typically 1-100 nm in at least one dimension. Since the grain sizes are so small, a significant volume of the microstructure in nanocrystalline materials is composed of in…
Nanoporous metals and alloysNanotechnology research and applicationsElectrophoretic Deposition in Materials Science
Xuejiao Hu、Linan Jiang、Kenneth E. Goodson2004-09-28OpenAlex
Thermal interface materials (TIMs) are widely used in high power integrated circuits. This work introduces multi-walled carbon nanotubes (CNTs) into a silicone composite filled with metal particles, resulting in a TIM with higher thermal conductivity. Anomalous increase in thermal conductivity is found starting at a C…
Nanofluid Flow and Heat TransferHeat Transfer and OptimizationThermal properties of materials
Yuya Oaki、Hiroaki Imai2004-09-28Langmuir
The morphology of potassium sulfate (K(2)SO(4)) crystals grown in a viscous polymer solution of poly(acrylic acid) (PAA) was remarkably changed from the tilted columnar assembly into zigzag and helical architectures with increasing PAA concentration. The habit modification of orthorhombic K(2)SO(4) with adsorption of…
Surfactants and Colloidal SystemsPolymer composites and self-healingCalcium Carbonate Crystallization and Inhibition
Thomas Kühn、Dragoş-Victor Anghel、J. P. Pekola 等 5 位作者2004-09-28Physical Review B
Phonon modes and their dispersion relations in ultrathin homogeneous dielectric membranes are calculated using elasticity theory. The approach differs from the previous ones by a rigorous account of the effect of the film surfaces on the modes with different polarizations. We compute the heat capacity of membranes and…
Thermal properties of materialsSuperconducting and THz Device TechnologyThermal Radiation and Cooling Technologies
Xavier López、Josep M. Poblet2004-09-28Inorganic Chemistry
The electronic characteristics and the redox properties of each isomer of PW(12)O(40)(3)(-) depend on the arrangement adopted by the metal-oxide framework. At the DFT/BP86 level, we computed the structures of the five isomers of PW(12)O(40)(3)(-) in oxidized form. The energy scale fits the experimental findings as wel…
Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesPolyoxometalates: Synthesis and Applications
Meng‐Sheng Liao、Tapas Kar、Sergiu M. Gorun 等 4 位作者2004-09-28Inorganic Chemistry
The effects of peripheral substituents and axial ligands on the electronic structure and properties of iron phthalocyanine, H(16)PcFe, have been investigated using a DFT method. Substitution by electron-withdrawing fluorinated groups alters the ground state of H(16)PcFe and gives rise to large changes in the ionizatio…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer Studies
John Cleary、Lev Bromberg、Edmond Magner2004-09-28Langmuir
Pluronic-PAA, a thermogelling copolymer composed of side chains of poly(acrylic acid) (PAA) grafted onto a backbone of Pluronic copolymer, is of interest as a vehicle for the controlled release of compounds. An important feature of such a vehicle is its bioadhesive/mucoadhesive properties, which in the case of Pluroni…
Hydrogels: synthesis, properties, applicationsbiodegradable polymer synthesis and propertiesPolymer Surface Interaction Studies
C. Thomsen、Stephanie Reich、Janina Maultzsch2004-09-28Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences
Single and double resonances in Raman scattering are introduced and six criteria for the observation and identification of double resonances stated. The experimental situation in carbon nanotubes is reviewed in view of these criteria. The evidence for the D mode and the high-energy mode is found to be overwhelming for…
Carbon Nanotubes in CompositesDiamond and Carbon-based Materials ResearchIon-surface interactions and analysis
Sung Yeun Choi、Marc Mamak、Scott A. Speakman 等 5 位作者2004-09-28Small
Herein we report the first kinetic study of the intrachannel wall phase-transition of amorphous titania to nanocrystalline anatase for periodic mesoporous titania thin films, monitored by time-resolved in situ high-temperature X-ray diffraction. Structural transformations associated with the phase transition are furth…
Mesoporous Materials and CatalysisPolyoxometalates: Synthesis and ApplicationsLayered Double Hydroxides Synthesis and Applications
Jun Ma、Ping Xiang、Yiu‐Wing Mai 等 4 位作者2004-09-28Macromolecular Rapid Communications
Abstract Summary: A novel method was developed to prepare an exfoliated styrene butadiene rubber (SBR)/clay nanocomposite with a strong interface between the clay layers and the rubber. An exfoliation mechanism was proposed and verified based on X‐ray diffraction (XRD)/transmission electron microscopy (TEM) analyses o…
Structural Behavior of Reinforced ConcretePolymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and Irradiation
Jouko Peltonen、Mikael Järn、Sami Areva 等 5 位作者2004-09-28Langmuir
The importance of different surface geometries and thereby the need for versatile surface identification by describing a number of different surface features is emphasized. A set of topographical parameters for the description of the amplitude and spatial and hybrid properties of surfaces was utilized for a versatile…
Surface Modification and SuperhydrophobicityAdhesion, Friction, and Surface InteractionsSurface Roughness and Optical Measurements
Athanasios B. Bourlinos、Subhendu Ray Chowdhury、David D. Jiang 等 7 位作者2004-09-28Small
A clear alternative: Hydrolytic polymerization and assembly of octadecyltrichlorosilane in toluene leads to meltable, structurally stable layered hybrids that are dispersible in common organic solvents (see picture). Such hybrid nanoparticle materials offer great potential as plasticizers and lubricating media.
Polymer Nanocomposites and PropertiesLayered Double Hydroxides Synthesis and ApplicationsSilicone and Siloxane Chemistry
Ju Li、Cai‐Zhuang Wang、Jinpeng Chang 等 7 位作者2004-09-28Physical Review B
Using a formulation based on anisotropic elasticity we determine the core energy and Peierls stress of the ${a}_{0}∕2[111]$ screw dislocation in bcc molybdenum at $T=0$. We show that a proper definition of the core energy necessarily involves choosing a reference direction $\stackrel{\ifmmode \hat{}\else \^{}\fi{}}{\m…
Microstructure and mechanical propertiesMagnesium Alloys: Properties and ApplicationsFusion materials and technologies
David G. Barton、Simon G. Podkolzin2004-09-28The Journal of Physical Chemistry B
The reaction mechanism of water formation from H2 and O2 was studied over a series of silica-supported gold nanoparticles. The metal particle size distributions were estimated with TEM and XRD measurements. Hydrogen and oxygen adsorption calorimetry was used to probe the nature and properties of surface species formed…
Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceNanomaterials for catalytic reactions
Andrea Redaelli、A. Pirovano、F. Pellizzer 等 6 位作者2004-09-28IEEE Electron Device Letters
The threshold switching mechanism in amorphous chalcogenides is investigated, showing experimental data that once and for all demonstrate its electronic nature. The physical mechanisms responsible for the switching to the highly conductive state are discussed and the impact of cumulative read-out pulses is also invest…
Chalcogenide Semiconductor Thin FilmsPhase-change materials and chalcogenidesOptical and Acousto-Optic Technologies