Alok Ranjan Paital、Wing‐Tak Wong、Guillem Aromı́ 等 4 位作者2007-06-15Inorganic Chemistry
Reaction of the dinucleating ligand H3L (2-(2'-hydroxyphenyl)-1,3-bis[4-(2-hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazolidine) with Ni(NO3)(2).6H2O produces the dimer of monomers [Ni(HL1)]2(NO3)(2).4H2O (1.4H2O) following the hydrolysis of H3L. If the reaction occurs in the presence of 2-formylphenol (Hfp) or 2,6-difor…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms
Janet Newman、Jian Xu、Michael C. Willis2007-06-15Acta Crystallographica Section D Biological Crystallography
Experiments were set up to test how the crystallization drop size affects the crystallization process; in the test cases studied, increasing the drop size led to increasing numbers of crystals. Other data produced from a high-throughput automation-system run were analyzed in order to gauge the effect of replication on…
Protein Structure and DynamicsEnzyme Structure and FunctionCrystallization and Solubility Studies
Fei Yang、Edem Wornyo、Ken Gall 等 4 位作者2007-06-15Nanotechnology
This paper presents experimental investigation of nanoscale indentation formation in shape memory polymers. The polymers were synthesized by photopolymerizing a tert-butyl acrylate (tBA) monomer with a poly(ethylene glycol dimethacrylate) (PEGDMA) crosslinker. The concentration and the molecular weight of the crosslin…
Advanced Sensor and Energy Harvesting MaterialsPolymer composites and self-healingForce Microscopy Techniques and Applications
Andrew H. Brown、Valerie V. Sheares2007-06-15Macromolecules
A versatile method for synthesizing functionalized amorphous degradable polyesters via step growth polycondensation was investigated. A series of dicarboxylic acids and anhydrides were synthesized by Diels−Alder reactions of fumaric acid and maleic anhydride, respectively, with various dienes. The resulting difunction…
Polymer composites and self-healingSynthetic Organic Chemistry MethodsSynthesis and properties of polymers
You-Chia Chang、Guoying Mei、Ting-Yu Chang 等 6 位作者2007-06-15Nanotechnology
Herein, we propose a special type of periodic subwavelength structure, which is optically an effective gradient-index (GRIN) antireflective surface that also exhibits enhanced-hydrophobic behaviour.Our new concept was developed adopting both the effective medium theory (EMT) and Wenzel's wettability model.To demonstra…
Surface Modification and SuperhydrophobicityPhotonic Crystals and ApplicationsOptical Coatings and Gratings
B. T. Poh、S. K. Chow2007-06-15Journal of Applied Polymer Science
Abstract Viscosity, loop tack, and peel strength of epoxidized natural rubber (ENR 25 grade)‐based pressure‐sensitive adhesive was studied in the presence of zinc oxide. The zinc oxide concentration was varied from 10–50 parts per hundred parts of rubber (phr). Coumarone–indene resin with loading from 20 to 100 phr wa…
Advanced Polymer Synthesis and CharacterizationPolymer Nanocomposites and PropertiesPolymer Science and PVC
Chandan Kumar Ghosh、Kalyan Kumar Chattopadhyay、M.K. Mitra2007-06-15Journal of Applied Physics
Co doped ZnO nanoparticles were synthesized by a simple rheological phase reaction-precursors method using zinc acetate, cobalt acetate, and oxalic acid for different atomic percentages of Co doping. X-ray diffraction studies confirmed the correct phase formation, and the composition were obtained from the x-ray photo…
ZnO doping and propertiesCopper-based nanomaterials and applicationsDielectric properties of ceramics
Keith P. McKenna、Peter V. Sushko、Alexander L. Shluger2007-06-15Journal of the American Chemical Society
The electron- and hole-trapping and optical properties of a wide variety of interfaces between MgO nanocrystallites are investigated for the first time using a quantum-mechanical embedded-cluster method and time-dependent density functional theory. We conclude that delocalized holes can be transiently trapped at a lar…
Electronic and Structural Properties of OxidesX-ray Diffraction in CrystallographyMagnesium Oxide Properties and Applications
Tapati Sarkar、P.K. Mukhopadhyay、A. K. Raychaudhuri 等 4 位作者2007-06-15Journal of Applied Physics
In this paper we report the structural, magnetic, and transport properties of nanoparticles of Pr0.5Ca0.5MnO3(PCMO). On comparing our results with that of bulk PCMO, we find that there is a likely destabilization of charge ordering in nanoparticles of PCMO. The investigation has been done with particle sizes as small…
Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsMagnetic Properties of Alloys
Jovan Mijović、Sanja Ristić、J. M. Kenny2007-06-15Macromolecules
Broadband dielectric relaxation spectroscopy (DRS) was employed to study molecular dynamics of the first six generations of poly(amidoamine) (PAMAM) dendrimers with ethylenediamine core and amino surface groups. DRS was performed over a wide range of frequency and temperature. Dendrimers show distinctly different rela…
Conducting polymers and applicationsLuminescence and Fluorescent MaterialsDendrimers and Hyperbranched Polymers
X. F. Liu、Yanfeng Sun、Rongmei Yu2007-06-15Journal of Applied Physics
A series of films deposited under different oxygen partial pressures and annealed under different atmospheres were prepared to investigate the role of oxygen vacancies in tuning magnetic properties of Co-doped SnO2 films. The inclusive Co in SnO2 is in the 2+ state and substitutes for the Sn4+ site. Intrinsic room tem…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsGa2O3 and related materials
Xiaohong Wu、Gang Wu、Bo Cui 等 5 位作者2007-06-15International Journal of Applied Ceramic Technology
The black thermal control coating was produced by in situ growth on an aluminum alloy by a relatively new method: microarc oxidation (MAO). In this article, the black MAO thermal control coating that had a high solar absorptance and a high infrared emittance was produced in a 0.1 mol/L NaAlO 2 electrolyte system. The…
Advanced ceramic materials synthesisHigh-Temperature Coating BehaviorsMagnesium Oxide Properties and Applications
J.R. Regina、John N. DuPont、A. R. Marder2007-06-15Welding Journal
Iron-aluminum-based weld cladding is currently being considered as corrosion-resistant coatings for boiler tubes in coal-fired power plants. Although these alloys could potentially be good coating candidates due to their excellent high-temperature corrosion resistance, Fe-Al weld cladding is susceptible to cracking du…
Hydrogen embrittlement and corrosion behaviors in metalsWelding Techniques and Residual StressesMetal Alloys Wear and Properties
Naoyuki Kitamura、Kohei Fukumi、Junji Nishii 等 4 位作者2007-06-15Journal of Applied Physics
The effect of impurity and density on refractive index was studied for silica glasses synthesized with direct, sol-gel, and vapor phase axial deposition (VAD) processes. Linear relationships between the refractive index and density n=Cρ+D were found in a wide wavelength region from ultraviolet to infrared. The correla…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsPhotonic Crystals and Applications
Ricardo O. Freire、Nivan B. da Costa、Gerd B. Rocha 等 4 位作者2007-06-15Journal of Chemical Theory and Computation
The Sparkle/PM3 model is extended to neodymium(III), promethium(III), and samarium(III) complexes. The unsigned mean error, for all Sparkle/PM3 interatomic distances between the trivalent lanthanide ion and the ligand atoms of the first sphere of coordination, is 0.074 Å for Nd(III); 0.057 Å for Pm(III); and 0.075 Å f…
Radioactive element chemistry and processingLanthanide and Transition Metal ComplexesElectrochemical Analysis and Applications
Geunhyung Kim、Jongha Park、Sua Park2007-06-15Journal of Polymer Science Part B Polymer Physics
Abstract To improve the hydrophilic properties of poly(ε‐caprolactone) (PCL) nano/microfiber webs for tissue engineering scaffolds, PCL webs of various structures were fabricated by electrospinning with single or double nozzles connected to an auxiliary electrode. Surface‐modified and layered PCL fiber webs were made…
Advanced Sensor and Energy Harvesting MaterialsElectrospun Nanofibers in Biomedical ApplicationsSilk-based biomaterials and applications
David L. McDowell、Hae Jin Choi、Jitesh H. Panchal 等 6 位作者2007-06-15Key engineering materials
Design has traditionally involved selecting a suitable material for a given application. A materials design revolution is underway in which the classical materials selection approach is replaced by design of material microstructure or mesostructure to achieve certain performance requirements such as density, strength,…
Fatigue and fracture mechanicsHigh Temperature Alloys and CreepHigh-Velocity Impact and Material Behavior
Sung Yu Kim、Hyuk‐Sang Kwon、Hee San Kim2007-06-15Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomena
More than 2% δ-ferrite phase is presented in type 316L stainless steels due to improvement of hot workability or welding process. In order to clarify the mechanism on how the δ-ferrite affects the corrosion resistance, electrochemical tests in a micro-droplet cell were conducted and microstructures were analyzed by TE…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsElectrochemical Analysis and Applications
Benjamin Anderson、Charles F. Zukoski2007-06-15Macromolecules
The stability of 44 nm diameter silica particles in poly(ethylene glycol) (PEG) melts is assessed through the experimental measurement of particle second virial coefficients, B 2 = B 2,cc /, where B 2,cc is the particle second virial coefficient and is the excluded volume second virial coefficient of the particles. Me…
Polymer crystallization and propertiesMaterial Dynamics and PropertiesPolymer Nanocomposites and Properties
M. Ivill、S. J. Pearton、Young-Woo Heo 等 6 位作者2007-06-15Journal of Applied Physics
The magnetic and transport properties of Mn-doped ZnO thin films co-doped with P are examined. Superconducting quantum interference device magnetometry measurements indicate that the films are ferromagnetic with an inverse correlation between magnetization and electron density as controlled by P doping. In particular,…
ZnO doping and propertiesMagnetic and transport properties of perovskites and related materialsCopper-based nanomaterials and applications