Satoru Matsuishi、Yasunori Inoue、Takatoshi Nomura 等 6 位作者2009-02-27New Journal of Physics
We examined the doping effect of 3d transition metal (TM) elements (Cr, Mn, Co, Ni and Cu) at the Fe site of a quaternary fluoroarsenide CaFeAsF, an analogue of 1111-type parent compound LaFeAsO. The anomaly at ∼120 K observed in resistivity (ρ) versus temperature ( T ) plot for the parent compound is suppressed by th…
Corporate Taxation and AvoidanceIron-based superconductors research
Ozan Kayacan、Ender Yazgan Bulgun2009-02-27International Journal of Clothing Science and Technology
Purpose The purpose of this paper is to investigate the concept of “electrically conductive fabrics”. The primer applications that import electrical conductivity properties to textiles and clothing are summarized. Also the heated fabric panels produced by steel yarns are evaluated. Single and multi-ply steel fabrics a…
Advanced Sensor and Energy Harvesting MaterialsTextile materials and evaluationsStructural Analysis and Optimization
Lan Li、Nasr M. Ghoniem2009-02-27Physical Review B
The strength and ductility of nanolayered materials are determined by a delicate balance between dislocation and interface motion under applied mechanical loading. We present here studies of dislocation and interface motion in single crystal and nanotwinned copper, utilizing molecular dynamics simulations. Motion of t…
Microstructure and mechanical propertiesAluminum Alloys Composites PropertiesHigh-Velocity Impact and Material Behavior
V. K. Tewary、Bo Yang2009-02-27Physical Review B
A parametric interatomic potential is constructed for graphene. The potential energy consists of two parts: a bond energy function and a radial interaction energy function. The bond energy function is based on the Tersoff-Brenner potential model. It includes angular terms and explicitly accounts for flexural deformati…
Carbon Nanotubes in CompositesGraphene research and applicationsBoron and Carbon Nanomaterials Research
D. K. Pratt、Y. Zhao、S. A. J. Kimber 等 13 位作者2009-02-27Physical Review B
Inelastic neutron-scattering measurements of ${\text{CaFe}}_{2}{\text{As}}_{2}$ under applied hydrostatic pressure show that the antiferromagnetic spin fluctuations observed in the ambient pressure, paramagnetic, and tetragonal $(T)$ phase are strongly suppressed, if not absent, in the collapsed tetragonal $(cT)$ phas…
Physics of Superconductivity and MagnetismIron-based superconductors researchSuperconductivity in MgB2 and Alloys
Sara Iacopini、Thomas Palberg、Hans Joachim Schöpe2009-02-27The Journal of Chemical Physics
Highly cross-linked polystyrene microgel colloids dispersed in an index and density matching solvent provide a system with hard-sphere-like interactions, where gravity effects are effectively minimized. They are a suitable target for time-resolved observations of solidification in purely repulsive systems. We have inv…
Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesPickering emulsions and particle stabilization
S. Rahimi、Dirk Engelberg、Jonathan Duff 等 4 位作者2009-02-27Journal of Microscopy
Grain boundary engineering has been proposed to increase the lifetime performance of sensitized austenitic stainless steel in aggressive environments. Increased microstructure resistance is typically associated with higher fractions of twin (Sigma3) grain boundaries, but there is uncertainty about the properties and r…
Microstructure and Mechanical Properties of SteelsHydrogen embrittlement and corrosion behaviors in metalsNon-Destructive Testing Techniques
Jingquan Sha、Jun Peng、Yu Zhang (12946) 等 7 位作者2009-02-27Crystal Growth & Design
By employing the polyoxometalates (POMs) with different sizes as structural motifs, three new organic−inorganic hybrids based on the multiply Cu-bipy coordination polymeric chain-modified POMs, [Cu(bipy)] 2 [HPMo 12 O 40 ] ( 1 ), {[Cu(bipy)] 4 [GeW 12 O 40 ]}·H 2 O ( 2 ), and {[Cu(bipy)] 4 [Mo 15 O 47 ]}·2H 2 O ( 3 )…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis
Leenaporn Jongpaiboonkit、Travelle Franklin‐Ford、William L. Murphy2009-02-27Advanced Materials
Polymer microspheres with a bone-like mineral coatings are generated via a biomimetic process, and this biodegradable coating is used as a carrier for delivery of biological molecules. Acidic and basic proteins are controllably bound and released from these microspheres, suggesting that this approach can be used for b…
Bone Tissue Engineering Materialsbiodegradable polymer synthesis and propertiesPolymer Surface Interaction Studies
Boshi Tian、Chun Yang2009-02-27The Journal of Physical Chemistry C
Thermosensitive nanocomposites based on mesoporous SBA-15 silica and poly( N -isopropylacrylamide) (PNIPAAm) have been synthesized via in situ polymerization of monomers deposited on the pore walls. The introduction of monomers and polymerization were examined by Fourier-transform infrared spectroscopy (FT-IR). The st…
Hydrogels: synthesis, properties, applicationsConducting polymers and applicationsMesoporous Materials and Catalysis
Xiao Hu、Qiang Lü、David L. Kaplan 等 4 位作者2009-02-27Macromolecules
Silk is a naturally occurring fibrous protein with a multiblock chain architecture. As such, it has many similarities with synthetic block copolymers, including the possibility for β-sheet crystallization restricted within the crystallizable blocks. The mechanism of isothermal crystallization kinetics of β-sheet cryst…
Insect and Arachnid Ecology and BehaviorSilk-based biomaterials and applicationsInsect Utilization and Effects
Miwa Yamada、Ken’ichiro Matsumoto、Takanori Nakai 等 4 位作者2009-02-27Biomacromolecules
Considerable enrichment of the lactate (LA) fraction in Poly[(R)-LA-co-(R)-3-hydroxybutyrate (3HB)] has been achieved, reaching up to 47 mol % from the previous 6 mol % [S. Taguchi et al. Proc. Natl. Acad. Sci. U.S.A. 2008, 105 (45), 17323-17327], when recombinant Escherichia coli W3110, harboring the LA-polymerizing…
Enzyme Catalysis and Immobilizationbiodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis
R. Spano、N. Daldosso、M. Cazzanelli 等 10 位作者2009-02-27Optics Express
We present a detailed investigation of the different processes responsible for the optical nonlinearities of silicon nanocrystals at 1550 nm. Through z-scan measurements, the bound-electronic and excited carrier contributions to the nonlinear refraction were measured in presence of two-photon absorption. A study of th…
Quantum Dots Synthesis And PropertiesSilicon Nanostructures and PhotoluminescenceNonlinear Optical Materials Studies
Qin Li、Hui Zhou、Douglas A. Wicks 等 6 位作者2009-02-27Macromolecules
The hydrogen bonding behavior of a homologous series of small molecule and polymeric urethanes, thiourethanes, and dithiourethanes was investigated in solution, melt, and solid states. The relative hydrogen bonding strengths in both small molecule and polymer systems were evaluated, and the results were compared to th…
Polymer composites and self-healingCarbon dioxide utilization in catalysisSynthesis and properties of polymers
M. Rotter、Marcus Tegel、Inga Schellenberg 等 10 位作者2009-02-27New Journal of Physics
Polycrystalline samples of underdoped (Ba 1- x K x )Fe 2 As 2 ( x ⩽0.4) were synthesized and studied by x-ray powder diffraction, magnetic susceptibility, specific heat and 57 Fe-Mößbauer spectroscopy. The structural phase transition from tetragonal to orthorhombic lattice symmetry shifts towards lower temperatures, b…
Corporate Taxation and AvoidanceIron-based superconductors research
Alexei Barinov、Luca Gregoratti、Pavel Dudin 等 5 位作者2009-02-27Advanced Materials
The gasification process, which increases the number of broken CC bonds and the abundance of particular oxygenated functional groups, is shown to destroy carbon nanotubes (CNTs). The expansion of the defect density and dimensions leads to nonlinear consumption of the CNTs with increasing O dose. Some nanotubes are co…
Carbon Nanotubes in CompositesGraphene research and applicationsDiamond and Carbon-based Materials Research
Ralph T. Yang、Yuhe Wang2009-02-27Journal of the American Chemical Society
A crucial bottleneck in developing a hydrogen economy is hydrogen storage. This is particularly true for transportation using hydrogen as the fuel for fuel cells. The U.S. Department of Energy has established specific R&D targets for on-board hydrogen storage. Among the most important targets are system gravimetric/vo…
Hydrogen Storage and MaterialsHybrid Renewable Energy SystemsAmmonia Synthesis and Nitrogen Reduction
Frank S. Spear、D. A. Wark2009-02-27Journal of Metamorphic Geology
Abstract Cathodoluminescence (CL) of quartz from metamorphic rocks representing a range of conditions from the garnet grade to the migmatite grade reveals a variety of textures, that is, a function of metamorphic grade and deformation history. Ti concentrations, determined by electron microprobe and ion microprobe, ge…
Glass properties and applicationsBuilding materials and conservationMineralogy and Gemology Studies
Michael A. McGuire、Raphaël P. Hermann、Athena S. Sefat 等 8 位作者2009-02-27New Journal of Physics
We present results of transport and magnetic properties and heat capacity measurements on polycrystalline CeFeAsO, PrFeAsO and NdFeAsO. These materials undergo structural phase transitions, spin density wave-like magnetic ordering of small moments on iron and antiferromagnetic ordering of rare-earth moments. The tempe…
Rare-earth and actinide compoundsCorporate Taxation and AvoidanceIron-based superconductors research
Y Sekiba、T Sato、K Nakayama 等 12 位作者2009-02-27New Journal of Physics
We have performed high-resolution angle-resolved photoemission spectroscopy on heavily electron-doped non-superconducting (SC) BaFe 1.7 Co 0.3 As 2 . We find that the two hole Fermi surface pockets at the Brillouin zone center observed in the hole-doped superconducting Ba 0.6 K 0.4 Fe 2 As 2 are absent or very small i…
Magnetic and transport properties of perovskites and related materialsIron-based superconductors researchSuperconductivity in MgB2 and Alloys