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Hybrid Coatings Containing Silver Nanoparticles Generated In situ in a Thiol‐Ene Photocurable System

Giovanna Colucci、Edvige Celasco、Chiara Mollea 等 6 位作者2011-05-17Macromolecular Materials and Engineering

Abstract Novel silver/polymer composites based on thiol‐ene chemistry are prepared by an in situ bottom‐up approach. The in situ synthesis of silver particles inside the polymer matrix is achieved in one pot by photoreduction reaction in presence of a silver precursor and the concurrent crosslinking reaction. XPS anal…

Advanced Photocatalysis TechniquesGold and Silver Nanoparticles Synthesis and ApplicationsConducting polymers and applications

Rheological properties of cotton pulp cellulose dissolved in 1‐butyl‐3‐methylimidazolium chloride solutions

Zhen Liu、Hui Wang、Zengxi Li 等 7 位作者2011-05-17Polymer Engineering and Science

Abstract Rheological properties of cotton pulp dissolved in 1‐butyl‐3‐methylimidazolium chloride ([Bmim]Cl) solutions were characterized using an advanced rheometer. The complex viscosity, dynamic modulus, and shear viscosity at different temperature were studied. In the steady shear measurements, all the solutions sh…

Advanced Cellulose Research StudiesLignin and Wood ChemistryPolysaccharides Composition and Applications

Structural and cellular characterization of electrospun recombinant human tropoelastin biomaterials

Kathryn A McKenna、Kenton W. Gregory、Rebecca C. Sarao 等 6 位作者2011-05-17Journal of Biomaterials Applications

An off-the-shelf vascular graft biomaterial for vascular bypass surgeries is an unmet clinical need. The vascular biomaterial must support cell growth, be non-thrombogenic, minimize intimal hyperplasia, match the structural properties of native vessels, and allow for regeneration of arterial tissue. Electrospun recomb…

Aortic Disease and Treatment ApproachesElectrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative Medicine

Design, Implementation, and Operation of a New C-Type 2nd Harmonic Filter for Electric Arc and Ladle Furnaces

Cem Özgür Gerçek、Muammer Ermiş、A. Ertas 等 5 位作者2011-05-17IEEE Transactions on Industry Applications

In this paper, the transient overvoltage suppression capability and harmonic filtering performance of C-type 2nd harmonic filters (HFs) are optimized by using two-stage damping resistors; one is permanently connected to the filter circuit, while the other one is switched on by back-to-back connected thyristors during…

Magnetic Properties and ApplicationsPower Transformer Diagnostics and InsulationVibration and Dynamic Analysis

Advances in Magnetic Shape Memory Materials

A. V. Chernenko2011-05-17Trans Tech Publications Ltd. eBooks

Volume is indexed by Thomson Reuters BCI (WoS).This second Special Topic edition follows the success of the first one: edited and published by TTP in 2008. It is intended to communicate the latest progress and research advances made in the theory, research and development of MSMMs. It comprises a collection of fifteen…

Shape Memory Alloy Transformations

Characterization of High‐Strain Rate Mechanical Behavior of AZ31 Magnesium Alloy Using 3D Digital Image Correlation

Yanli Wang、Hanbing Xu、Donald Erdman 等 5 位作者2011-05-17Advanced Engineering Materials

Abstract Characterization of the material mechanical behavior at sub‐Hopkinson regime (0.1 to 1 000 s −1 ) is very challenging due to instrumentation limitations and the complexity of data analysis involved in dynamic loading. In this study, AZ31 magnesium alloy sheet specimens are tested using a custom designed servo…

Metal and Thin Film MechanicsMagnesium Alloys: Properties and ApplicationsAluminum Alloys Composites Properties

Crystal Growth Studies on Microporous Zincophosphate-Faujasite Using Atomic Force Microscopy

Pablo Cubillas、Mark A. Holden、Michael W. Anderson2011-05-17Crystal Growth & Design

In this paper we report the first in situ atomic force microscopy study on the crystal growth of zincophosphate-faujasite (ZnPO-FAU). Results show that growth at low to moderate supersaturation conditions takes place by a birth-and-spread and/or spiral growth mechanism. At medium-to-high supersaturation conditions, gr…

Zeolite Catalysis and SynthesisCalcium Carbonate Crystallization and InhibitionClay minerals and soil interactions

Designing and building nanowires: directed nanocrystal self-assembly into radically branched and zigzag PbS nanowires

Fan Xu、Xin Ma、Luis Felipe Gerlein 等 4 位作者2011-05-17Nanotechnology

Lead sulfide nanowires with controllable optoelectronic properties would be promising building blocks for various applications. Here, we report the hot colloidal synthesis of radically branched and zigzag nanowires through self-attachment of star-shaped and octahedral nanocrystals in the presence of multiple surfactan…

Perovskite Materials and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films

A facile and universal way to fabricate superlattice nanowire arrays

Shao Hui Xu、Guang Tao Fei、Xiao Zhu 等 6 位作者2011-05-17Nanotechnology

A facile and universal synthetic approach for preparing superlattice nanowire (SLNW) arrays is developed. In this method, two kinds of elements are alternately electrodeposited into the holes of the anodic alumina oxide (AAO) template, automatically in separate electrolytes by a programmed device. This method is not r…

Advanced Thermoelectric Materials and DevicesNanowire Synthesis and ApplicationsAnodic Oxide Films and Nanostructures

Equilibrium and Nonequilibrium Features in the Morphology and Structure of Physisorbed Polyelectrolyte Layers

Stephan Block、Christiane A. Helm2011-05-17The Journal of Physical Chemistry B

AFM is used to characterize sodium poly(styrene sulfonate) (PSS) layers physisorbed from NaCl solutions with an ionic strength ranging between 0 and 1 M NaCl. Colloidal probe tapping mode imaging shows that domains of PSS salted brushes coexist with flatly adsorbed PSS. The brush area fraction increases with rising de…

Polymer Surface Interaction StudiesForce Microscopy Techniques and ApplicationsAnalytical Chemistry and Sensors

A comparative study of 1/fnoise and temperature coefficient of resistance in multiwall and single-wall carbon nanotube bolometers

Rongtao Lu、Rayyan Kamal、Judy Wu2011-05-17Nanotechnology

The 1/f noise and temperature coefficient of resistance (TCR) are investigated in multiwall carbon nanotube (MWCNT) film bolometers since both affect the bolometer detectivity directly. A comparison is made between the MWCNT film bolometers and their single-wall carbon nanotube (SWCNT) counterparts. The intrinsic nois…

Carbon Nanotubes in CompositesTransition Metal Oxide NanomaterialsMechanical and Optical Resonators

Charge stripes in the two-orbital Hubbard model for iron pnictides

Qinlong Luo、Dao‐Xin Yao、Adriana Moreo 等 4 位作者2011-05-17Physical Review B

The two-orbital Hubbard model for the pnictides is studied numerically using the real-space Hartree--Fock approximation on finite clusters. Upon electron doping, states with a nonuniform distribution of charge are stabilized. The observed patterns correspond to charge stripes oriented perpendicular to the direction of…

Physics of Superconductivity and MagnetismRare-earth and actinide compoundsIron-based superconductors research

Griffiths-like phase and magnetic correlations at high fields in Gd5Ge4

Nicolás Pazos‐Pérez、Fèlix Casanova、F. Bartolomé 等 6 位作者2011-05-17Physical Review B

Magnetic correlations appearing in polycrystalline Gd${}_{5}$Ge${}_{4}$ are studied. On the one hand, ac susceptibility measurements as functions of temperature at several dc fields and frequencies show the existence of ferromagnetic (FM) and antiferromagnetic (AFM) correlations in the paramagnetic (PM) region, where…

Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsPhase-change materials and chalcogenides

Nitrogen‐Rich Plasma‐Polymerized Coatings on PET and PTFE Surfaces Improve Endothelial Cell Attachment and Resistance to Shear Flow

Anne Gigout、Juan‐Carlos Ruiz、M. R. Wertheimer 等 5 位作者2011-05-17Macromolecular Bioscience

Low seeding efficiency and poor cell retention under flow-induced shear stress limit the effectiveness of in vitro endothelialization strategies for small-diameter vascular grafts. Primary-amine-rich plasma-polymerized coatings (PPE:N) deposited using low- and atmospheric-pressure plasma discharges on PET and PTFE are…

Electrospun Nanofibers in Biomedical ApplicationsPolymer Surface Interaction StudiesPolymer Nanocomposite Synthesis and Irradiation

Assessment of nanocomposites based on unsaturated polyester resin/nanoclay under impact loading

Javad Moftakharian Esfahani、Ali Reza Sabet、Masoud Esfandeh2011-05-17Polymers for Advanced Technologies

Abstract The aim of this study is to investigate the performance of nanoclay reinforced unsaturated polyester (UP) resin under impact loads. Nanocomposite specimens containing nanoclay in 0, 1.5, and 3 (wt%) were prepared by melt mixing method. X‐ray diffraction, transmission electron microscopy analysis, scanning ele…

Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesTribology and Wear Analysis

Grain boundary electrochemistry of β‐type Nb–Ti alloy using a scanning droplet cell

Michael T. Woldemedhin、Dierk Raabe、Achim Walter Hassel2011-05-17physica status solidi (a)

Abstract Localized oxide spots were grown at the grain boundaries of a technically relevant 30 at.% Nb–Ti β‐type titanium alloy to study the local electrochemical response. The grain boundaries selected were combinations of grains having different orientations and grain boundary angle. Crystallographic information of…

Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsTitanium Alloys Microstructure and Properties

First-principles investigations of electronic and magnetic properties of SrTiO3(001) surfaces with adsorbed ethanol and acetone molecules

Waheed A. Adeagbo、Guntram Fischer、W. Hergert2011-05-17Physical Review B

First-principles methods based on density functional theory are used to investigate the electronic and magnetic properties of molecular interaction of the TiO${}_{2}$ terminated SrTiO${}_{3}$ (100) surface with ethanol or acetone. Both the perfect surface and the surface with an oxygen or a titanium vacancy in the top…

Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsElectronic and Structural Properties of Oxides

Synthesis and Characterization of Cytocompatible Sulfonated Polyanilines

Yanyin Yang、Yong Min、Jen‐Chieh Wu 等 6 位作者2011-05-17Macromolecular Rapid Communications

We report here that by good design, polyaniline (PANI) can be cytocompatible and formed into usable scaffolds for bio-medical applications. By adjusting the ratio of two monomers, aniline (AN) and metanilic acid (MA), a series of copolymers with different sulfonation degrees have been synthesized. Four-probe conductiv…

Advanced Sensor and Energy Harvesting MaterialsConducting polymers and applicationsAnalytical Chemistry and Sensors

A Metastable Metal with Decagonal Local Symmetry Obtained by Low‐Temperature Pseudomorphosis

Martin Kaiser、Anna Isaeva、Michael Ruck2011-05-17Angewandte Chemie International Edition

Losing an I: The metastable metallic compound Bi28Ni25 is the product of the mild reduction of the solid precursor Bi28Ni25I5. In a pseudomorphosis the iodine is completely extracted while the macroscopic crystals are preserved. The unique structure is composed of decagonal nanorods, which consist of an outer Bi tube,…

Theoretical and Computational PhysicsMetallic Glasses and Amorphous AlloysQuasicrystal Structures and Properties

Effects of TEMPO oxidation system on kinetic constants of cotton fibers

Lu Dai、Hongqi Dai、Yangchun Yuan 等 5 位作者2011-05-17BioResources

The kinetics of the TEMPO-mediated oxidation of cotton fibers were studied. It was revealed that the oxidation reaction of the cotton fibers by TEMPO/NaBr/NaClO system can be approximately described as two pseudo-first-order reaction kinetics that are based on the cellulose microstructure, namely the kinetic processes…

Advanced Cellulose Research StudiesEnzyme-mediated dye degradationDyeing and Modifying Textile Fibers