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A numerical model for adiabatic shear bands with application to a thick-walled cylinder in 304 stainless steel

Mingtao Liu、LI Yong-chi、Haibo Hu 等 4 位作者2013-12-06Modelling and Simulation in Materials Science and Engineering

The formation of an adiabatic shear band (ASB) experiences three stages: stable plastic flow, nucleation and a fluid-like stage. For different stages, the microstructures of the material undergo great changes. The mechanical behavior of the material in each stage has its own unique characteristics. To describe these c…

Energetic Materials and CombustionHigh-Velocity Impact and Material BehaviorStructural Response to Dynamic Loads

Packing bridges in protein crystal structures

Oliviero Carugo、Kristina Djinović‐Carugo2013-12-06Journal of Applied Crystallography

On the basis of a statistical analysis of the data deposited in the Protein Data Bank [Berman et al. (2000). Nucleic Acids Res. 28 , 235–242; Bernstein et al. (1977). J. Mol. Biol. 112 , 535–542], it is shown that two symmetry-related protein molecules are frequently bridged by a small molecule/monoatomic ion, which w…

Protein Structure and DynamicsRNA and protein synthesis mechanismsEnzyme Structure and Function

Metal tips on pyramid-shaped PbSe/CdSe/CdS heterostructure nanocrystal photocatalysts: study of Ostwald ripening and core/shell formation

Whi Dong Kim、Sooho Lee、Chaewon Pak 等 8 位作者2013-12-06Chemical Communications

We report ripening of metal particles anchored on pyramid-shaped heterostructure nanocrystals. The 'intra-particle' ripening results in a large metal tip at one corner with the other three tips vanishing. Investigation reveals that the ripening and core/shell formation affects photocatalytic activities via the Fermi l…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications

Size-Controlled Vaterite Composite Particles with a POSS-Core Dendrimer for the Fabrication of Calcite Thin Films by Phase Transition

Shiho Nakamura、Kensuke Naka2013-12-06Langmuir

Vaterite composite particles with a size-controlled sphere were obtained by a carbonate controlled-addition method by using a carboxylate-terminated poly(amidoamine) (PAMAM)-type polyhedral oligomeric silsesquioxane (POSS)-core dendrimer. An aqueous ammonium carbonate solution was added to an aqueous solution of the d…

Bone Tissue Engineering MaterialsCorrosion Behavior and InhibitionCalcium Carbonate Crystallization and Inhibition

Pr Doped Barium Cerate as the Cathode Material for Proton‐Conducting SOFCs

Zetian Tao、Guihua Hou、Ning Xu 等 5 位作者2013-12-06Fuel Cells

Abstract BaCe 0.8 Pr 0.2 O 3 (BCP20) and BaCe 0.6 Pr 0.4 O 3 (BCP40) powders are successfully synthesized through the Pechini method and used as the cathode materials for proton‐conducting solid state oxide fuel cells (SOFCs). The prepared cells consisting of the structure of a BaZr 0.1 Ce 0.7 Y 0.2 O 3–δ (BZCY7)‐NiO…

Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides

Bioinspired assembly of layered double hydroxide/carboxymethyl chitosan bionanocomposite hydrogel films

Yi Wang、Dun Zhang2013-12-06Journal of Materials Chemistry B

Carboxymethyl chitosan (CMC) intercalated Mg-Al layered double hydroxides (C-LDHs) with high dispersion in the CMC matrix were successfully synthesised by a one-pot method using a facile biopolymer-assisted approach in the presence of CMC under hydrothermal conditions. Highly oriented, flexible and glossy self-support…

Bone Tissue Engineering MaterialsPolymer Surface Interaction StudiesLayered Double Hydroxides Synthesis and Applications

Effect of Gate Dielectrics on the Performance of P-Type Cu<sub>2</sub>O TFTs Processed at Room Temperature

Hala Al-Jawhari、J.A. Caraveo-Frescsa2013-12-06Advanced materials research

Single-phase Cu 2 O films with p-type semiconducting properties were successfully deposited by reactive DC magnetron sputtering at room temperature followed by post annealing process at 200°C. Subsequently, such films were used to fabricate bottom gate p-channel Cu 2 O thin film transistors (TFTs). The effect of using…

ZnO doping and propertiesThin-Film Transistor TechnologiesCopper-based nanomaterials and applications

Using field theory to construct hybrid particle–continuum simulation schemes with adaptive resolution for soft matter systems

Shuanhu Qi、Hans Behringer、Friederike Schmid2013-12-06New Journal of Physics

We develop a multiscale hybrid scheme for simulations of soft condensed matter systems, which allows one to treat the system at the particle level in selected regions of space, and at the continuum level elsewhere. It is derived systematically from an underlying particle-based model by field theoretic methods. Particl…

Material Dynamics and PropertiesBlock Copolymer Self-AssemblyComposite Material Mechanics

Real-time and sensitive detection of lipase using liquid crystal droplet patterns supported on solid surfaces

Qiongzheng Hu、Chang‐Hyun Jang2013-12-06Liquid Crystals

In this study, we demonstrate a real-time and sensitive strategy for monitoring of lipase activity using liquid crystal (LC) droplets with micrometre scales supported on solid surfaces. The LC droplet pattern was formed by evaporating a solution of nematic LC, 4-cyano-4′-pentylbiphenyl (5CB) dissolved in heptane. The…

Liquid Crystal Research AdvancementsNeurobiology and Insect Physiology Research

Speciation of Cr( iii ) in intermediate phases during the sol–gel processing of Cr-doped SrTiO 3 powders

Keith A. Lehuta、Kevin R. Kittilstved2013-12-06Journal of Materials Chemistry A

The local environment of Cr3+ during the sol–gel synthesis of 1% and 5% Cr3+-doped SrTiO3 (Cr3+:SrTiO3) bulk powders was systematically studied by structural characterization techniques and dopant-specific spectroscopies. After calcination at 800 °C, the precursors were annealed between 850 °C and 1050 °C for up to 6…

Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsElectronic and Structural Properties of Oxides

AC pollution flashover performance and flashover process of glass insulators at high altitude site

Xingliang Jiang、Ze Xiang、Zhijin Zhang 等 6 位作者2013-12-06IET Generation Transmission & Distribution

The ac pollution flashover performance and flashover process of LXHY 3 ‐I6O insulators was investigated at a high altitude site (altitude of 1400m) in this paper. The solid layer method was used, and even‐rising voltage method was adopted. According to the test results, the average pollution flashover voltage ( U av )…

High voltage insulation and dielectric phenomenaLightning and Electromagnetic PhenomenaAerosol Filtration and Electrostatic Precipitation

Birefringence, permittivity, elasticity and rotational viscosity of ambient temperature, high birefringent nematic liquid crystal mixtures

D. Venkata Sai、P. Sathyanarayana、V. S. S. Sastry 等 7 位作者2013-12-06Liquid Crystals

We prepared a few binary nematic liquid crystal mixtures with high birefringence ( at room temperature) and studied the temperature variation of physical properties. All the mixtures show a small, positive dielectric anisotropy and the parallel component of dielectric constant exhibits anomalous temperature dependence…

Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsPlant Reproductive Biology

Energy Balance for a Sonoluminescence Bubble Yields a Measure of Ionization Potential Lowering

Brian Kappus、Alexander Bataller、Seth Putterman2013-12-06Physical Review Letters

Application of energy conservation between input sound and the microplasma which forms at the moment of sonoluminescence places bounds on the process, whereby the gas is ionized. Detailed pulsed Mie scattering measurements of the radius versus time for a xenon bubble in sulfuric acid provide a complete characterizatio…

Ultrasound and Hyperthermia ApplicationsCombustion and Detonation ProcessesUltrasound and Cavitation Phenomena

Optimization of the thermoelectric properties of nanostructured silicon

Giovanni Pennelli、Massimo Macucci2013-12-06Journal of Applied Physics

We analyse the possibilities opened by nanostructuring for the efficient use of silicon as a thermoelectric material. Nanostructured silicon does not offer significant opportunities from the point of view of an increased Seebeck coefficient; however, nanostructuring allows an important advantage in terms of the reduct…

Advanced Thermoelectric Materials and DevicesThermal properties of materialsThermal Radiation and Cooling Technologies

Simultaneous diffuse reflection infrared spectroscopy and X-ray pair distribution function measurements

Kevin A. Beyer、Haiyan Zhao、Olaf J. Borkiewicz 等 6 位作者2013-12-06Journal of Applied Crystallography

Combining insights from diffuse reflection infrared Fourier transform spectroscopy and X-ray pair distribution function (PDF) analysis has the potential to deepen our understanding of complex materials systems including heterogeneous catalysts and host–guest systems. This article describes the development of instrumen…

Crystal Structures and PropertiesThermal and Kinetic AnalysisX-ray Diffraction in Crystallography

Screening Methodology for the Efficient Pairing of Ionic Liquids and Carbonaceous Electrodes Applied to Electric Energy Storage

Julio F. Jover、Rafael Lugo、H. Toulhoat 等 5 位作者2013-12-06The Journal of Physical Chemistry C

A model is presented that correlates the measured electric capacitance with the energy that comprises the desolvation, dissociation and adsorption energy of an ionic liquid into carbonaceous electrode (represented by single-wall carbon nanotubes). An original methodology is presented that allows for the calculation of…

Advancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced Battery Materials and Technologies

A Uranium‐Based UO2+–Mn2+ Single‐Chain Magnet Assembled trough Cation–Cation Interactions

Victor Mougel、Lucile Chatelain、Johannes Hermle 等 10 位作者2013-12-06Angewandte Chemie

Abstract Single‐chain magnets (SCMs) are materials composed of magnetically isolated one‐dimensional (1D) units exhibiting slow relaxation of magnetization. The occurrence of SCM behavior requires the fulfillment of stringent conditions for exchange and anisotropy interactions. Herein, we report the synthesis, the str…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesAdvanced NMR Techniques and Applications

Suzuki coupling reaction catalyzed heterogeneously by Pd(salen)/polyoxometalate compound: another example for synergistic effect of organic/inorganic hybrid

Jinhui Tong、Haiyan Wang、Xiaodong Cai 等 6 位作者2013-12-06Applied Organometallic Chemistry

A hybrid compound consisting of palladium(salen) [salen = N , N ′‐bis(salicylidene)ethylenediamine] complex covalently linked to a lacunary Keggin‐type polyoxometalate, K 8 [SiW 11 O 39 ](POM), was synthesized and characterized by FT‐IR, elemental analysis, inductively coupled plasma and diffuse reflectance UV–visible…

Catalytic Cross-Coupling ReactionsPolyoxometalates: Synthesis and ApplicationsSulfur-Based Synthesis Techniques

Conferring an adhesion layer with mineralization-inducing capabilities for preparing organic–inorganic hybrid microcapsules

Wenyan Zhang、Jiafu Shi、Xiaoli Wang 等 6 位作者2013-12-06Journal of Materials Chemistry B

In this study, a novel approach to prepare organic–inorganic hybrid microcapsules was developed by conferring an adhesion layer with mineralization-inducing capabilities under mild conditions. The wall of hybrid microcapsules consisted of two layers: an organic layer (adhesion layer) and an inorganic layer (biomineral…

biodegradable polymer synthesis and propertiesPolymer Surface Interaction StudiesGraphene and Nanomaterials Applications

A Common Multiscale Feature of the Deformation Mechanisms of a Semicrystalline Polymer

Laurent Farge、Stéphane André、Florian Meneau 等 5 位作者2013-12-06Macromolecules

The deformation mechanisms of a semicrystalline polymer (SCP) subjected to tensile loading were experimentally studied from nano to micro and macro length scales. The paper’s focus is on the development of anisotropic features at all scales during deformation. At the nanoscale, original results are presented based on…

Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesElasticity and Material Modeling