Chunyan Qi、Zhong‐Xia Wang2006-06-28Journal of Polymer Science Part A Polymer Chemistry
Abstract A series of Al(III) and Sn(II) diiminophosphinate complexes have been synthesized. Reaction of Ph(ArCH 2 )P(NBu t )NHBu t (Ar = Ph, 3 ; Ar = 8‐quinolyl, 4 ) with AlR 3 (R = Me, Et) gave aluminum complexes [R 2 Al{(NBu t ) 2 P(Ph)(CH 2 Ar)}] (R = Me, Ar = Ph, 5 ; R = Me, Ar = 8‐quinolyl, 6 ; R = Et, Ar = Ph,…
Organometallic Complex Synthesis and Catalysisbiodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis
Sylvie Aubry、D.A. Hughes2006-06-28Physical Review B
Recent molecular dynamics simulations of nanocrystals have illustrated the importance of stacking fault width for mechanical behavior and microstructure. Stacking fault (SF) width is a balance between elastic strain energy and the SF energy. While the latter is a material constant, the former strain energy may vary du…
Microstructure and mechanical propertiesMetal and Thin Film MechanicsElectromagnetic Effects on Materials
Te‐Ming Peng、Rung‐Tsung Hsu、Jau‐Ho Jean2006-06-28Journal of the American Ceramic Society
A low‐fire Ni–Cu–Zn ferrite+dielectric ceramic composite and its multilayer integrated laminate, which can be densified at temperatures below 900°C, is prepared. To densify Ni–Cu–Zn ferrite at low temperatures, the dielectric needs to contain an effective sintering flux of Bi 2 O 3 or PbO to the Ni–Cu–Zn ferrite. This…
Multiferroics and related materialsMagnetic Properties and Synthesis of FerritesElectromagnetic wave absorption materials
Roland Roth、K M Kroll2006-06-28Journal of Physics Condensed Matter
We combine a density functional theory (DFT) treatment of capillary evaporation in a cylindrical pore with the morphometric approach in order to study the formation and breaking of bubbles in a hydrophobically lined part of a cone. The morphometric approach, in which the grand potential of a system is described in fou…
Phase Equilibria and ThermodynamicsNanopore and Nanochannel Transport StudiesPickering emulsions and particle stabilization
Timo Thonhauser、Karin M. Rabe2006-06-28Physical Review B
We present first-principles density-functional calculations using the local density approximation to investigate the structural instability of cubic perovskite ${\mathrm{BaBiO}}_{3}$. This material might exhibit charge disproportionation and some evidence thereof has been linked to the appearance of an additional four…
Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsElectronic and Structural Properties of Oxides
Mark G. Kuzyk、David S. Watkins2006-06-28The Journal of Chemical Physics
Extensive studies in the past have focused on precise calculations of the nonlinear-optical susceptibility of thousands of molecules. In this work, we use the broader approach of considering how geometry and symmetry alone play a role, irrespective of molecular constraints. We investigate the nonlinear optical respons…
Liquid Crystal Research AdvancementsNonlinear Optical Materials ResearchNonlinear Optical Materials Studies
Rasha M. Khafagy2006-06-28Journal of Polymer Science Part B Polymer Physics
Abstract The conformational changes occurring in isotactic polypropylene during the melting and crystallization processes have been carefully investigated using FT‐Raman spectroscopy at temperatures below, at, and above the polymer melting point. Results confirmed the retention of some crystallinity up to +210 °C, whi…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Rachel K. Smith、Sanjini U. Nanayakkara、Gerd H. Woehrle 等 7 位作者2006-06-28Journal of the American Chemical Society
We report diffusion in the tunneling spectra of isolated, ligand-stabilized undecagold (Au11) clusters immobilized by attachment to alpha,omega-alkanedithiolate tethers inserted into alkanethiolate self-assembled monolayers. We use scanning tunneling microscopy and spectroscopy at cryogenic (UHV, 4 K) conditions to me…
Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesNanocluster Synthesis and Applications
Tie Jun Cui、Xian Qi Lin、Qiang Cheng 等 5 位作者2006-06-28Physical Review B
We present a theoretical and experimental study on the evanescent-wave amplification (EWA) and evanescent-wave transmission (EWT) using a waveguide structure. The evanescent waves (or cutoff waves) can be easily generated in a planar substrate integrated waveguide (SIW), which behaves quite similarly to a conventional…
Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsMicrowave Engineering and Waveguides
Irina Cotiuga、Francesco Picchioni、U. S. Agarwal 等 6 位作者2006-06-28Macromolecular Rapid Communications
Abstract Summary: The use of the block copolymers polystyrene‐ block ‐poly(ethylene oxide) and poly(methyl methacrylate)‐ block ‐poly(ethylene oxide) is described to assist the direct solubilization of single‐walled carbon nanotubes (SWNTs) into water under ultrasonic irradiation. As compared to surfactants and homopo…
Carbon Nanotubes in CompositesDielectric materials and actuatorsPolymer Nanocomposite Synthesis and Irradiation
Hong Xu、Minghua Luo、Muhuo Yu 等 5 位作者2006-06-28Journal of Macromolecular Science Part B
Melt solid polycondensation is an approach to increase the molecular weight of poly (L‐lactic acid) (PLLA). For this report, the effect of crystallization time of PLLA prepolymer on the molecular weight of the biomaterial was studied. In this process, PLLA prepolymer with a molecular weight of 18,000 was first prepare…
biodegradable polymer synthesis and propertiesAdditive Manufacturing and 3D Printing TechnologiesCarbon dioxide utilization in catalysis
Xingyou Tian、Xian Zhang、Wentao Liu 等 6 位作者2006-06-28Journal of Macromolecular Science Part B
A kind of poly(ethylene terephthalate) (PET)/Silica nanocomposite (PETS) was synthesized via in situ polymerization using the compatibility between silica nanoparticles and ethylene glycol (EG). Transmission electron microscopy (TEM) micrographs revealed that the silica nanoparticles were well dispersed in the PET mat…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Keiji Shimoda、Masayuki Okuno2006-06-28Journal of Physics Condensed Matter
The pressure-induced structural evolutions of CaSiO(3)-MgSiO(3) glasses have been examined by means of molecular dynamics simulation. Our calculations revealed that Si coordination remained unchanged up to 15 GPa, while modifier cations caused significant changes in the short-range order structure. In the present stud…
Advanced ceramic materials synthesisHigh-pressure geophysics and materialsGlass properties and applications
Sneh L. Jain、J.B. Lakeman、Kevin D. Pointon 等 4 位作者2006-06-28Journal of Electrochemical Energy Conversion and Storage
This paper describes a direct carbon fuel cell (DCFC) based on a solid oxide fuel cell (SOFC) system which has been used to assess the performance of a high surface area carbon fuel material. The cell, consisting of a co-fired anode, electrolyte, and cathode, has been produced by standard tape casting methods and is o…
Supercapacitor Materials and FabricationAdvancements in Solid Oxide Fuel CellsAerogels and thermal insulation
Juthathip Fangkangwanwong、Mitsuru Akashi、Toshiyuki Kida 等 4 位作者2006-06-28Macromolecular Rapid Communications
Abstract Summary: A chitosan‐hydroxybenzotriazole (HOBt) aqueous solution prepared by simply mixing chitosan and HOBt in water provides an effective system to functionalize chitosan in an aqueous environment. This aqueous solution in combination with water‐soluble carbodiimide (WSC) allows the conjugation of functiona…
Hydrogels: synthesis, properties, applicationsNanocomposite Films for Food PackagingPolymer Surface Interaction Studies
Zhiyong Zhou、Xianlin Dong、Shiming Huang 等 4 位作者2006-06-28Journal of the American Ceramic Society
Single Aurivillius phase Bi 3− x La x TiNbO 9 (LBTN‐ x , x =0.00, 0.50, 0.75, and 1.00) ceramics were prepared by the conventional solid‐state reaction method. When x ≤0.50, the ceramics are normal ferroelectrics, while LBTN‐0.75 and LBTN‐1.00 showed typical relaxor behavior, which could probably be attributed to the…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsMicrowave Dielectric Ceramics Synthesis
Yannick J. Dappe、Rafał Oszwałdowski、Pablo Jauralde Pou 等 6 位作者2006-06-28Physical Review B
A detailed discussion of the local linear combination of atomic orbitals (LCAO) orbital occupancy (OO) density functional approach, for calculating the total energy and electronic properties of solids, is presented. An approximation to the exchange-correlation energy within the OO approach is discussed to improve the…
Semiconductor materials and devicesBoron and Carbon Nanomaterials ResearchSemiconductor materials and interfaces
K. Knı́žek、Z. Jirák、J. Hejtmánek 等 7 位作者2006-06-28Physical Review B
The crystal structure of perovskite $\mathrm{Y}\mathrm{Co}{\mathrm{O}}_{3}$ has been studied by neutron powder diffraction up to high temperatures. The orthorhombic $Pbnm$ symmetry is confirmed in the whole temperature range. A significant isotropic enlargement of $\mathrm{Co}{\mathrm{O}}_{6}$ octahedra is evidenced a…
Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics
Xiaodong Wang、Bin Li、Zenghua Liu 等 7 位作者2006-06-28IEEE Transactions on Power Delivery
/sup T/he development of time-frequency and time-scale transforms has progressed rapidly over the last 20 years. The development and progression of numerical acquisition enable the utilization of these mathematical tools to analyze partial discharge in electrical equipment. This paper introduces a new transform, a Hil…
High voltage insulation and dielectric phenomenaPower Transformer Diagnostics and InsulationAdvanced Electrical Measurement Techniques
Keun Sang Oh、Sung Kyun Han、Hyun Suk Lee 等 9 位作者2006-06-28Biomacromolecules
Core/shell nanoparticles with lipid core, were prepared and characterized as a sustained delivery system for protein. The lipid core is composed of protein-loaded lecithin and the polymeric shell is composed of Pluronics (poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer, F-127). Based…
Nanoparticle-Based Drug DeliveryLipid Membrane Structure and BehaviorMonoclonal and Polyclonal Antibodies Research