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Ultrafast transient spectroscopy and photoluminescence properties of V2O5 nanowires

Andreas Othonos、Constantinos Christofides、Matthew Zervos2013-09-23Applied Physics Letters

The properties of V2O5 semiconductor nanowires have been investigated using ultrashort transient absorption spectroscopy in conjunction with time resolved photoluminescence. Femtosecond pulse excitation has been utilized to generate non equilibrium carrier densities above the band edge of the Nanowires (NWs), and non-…

Gas Sensing Nanomaterials and SensorsTransition Metal Oxide NanomaterialsGa2O3 and related materials

The influence of gold surface texture on microglia morphology and activation

Yih Horng Tan、Shana E. Terrill、Geeta Paranjape 等 5 位作者2013-09-23Biomaterials Science

Microglial cells play a critical role in the propagation of neuroinflammation in the central nervous system. Microglia sense and respond to environmental signals including chemical, physical and biological cues from the surrounding cell/tissue components. In this project, our goal was to examine the effects of surface…

Electrocatalysts for Energy ConversionAnodic Oxide Films and NanostructuresNanoporous metals and alloys

Cationic polythiophenes as responsive DNA-binding polymers

Analyn C. Carreon、Webster L. Santos、John B. Matson 等 4 位作者2013-09-23Polymer Chemistry

A new water soluble cationic polythiophene derivative, poly(N,N,N-trimethyl-3-(2-(thiophen-3-yl)acetamido)propan-1-aminium iodide), was synthesized via two consecutive post-polymerization functionalizations of poly(methyl 2-(thiophen-3-yl)acetate). This conjugated polymer binds DNA at N/P = 5 and forms polyplexes at N…

Conducting polymers and applicationsRNA Interference and Gene DeliverySynthesis and properties of polymers

The Influence of Sodium Chloride on the Resulting AAO Film Thickness

Miroslav Badida、Miroslav Gombár、Lýdia Sobotová 等 6 位作者2013-09-23Advanced materials research

The contribution examines the effects of the electrolyte chemical composition on the resulting AAO layer thickness, which is one of the main indicators of corrosion protection of aluminium parts and which also favourably affects mechanical properties of component surfaces. For comparison purposes, there were selected…

Concrete Corrosion and DurabilityAnodic Oxide Films and NanostructuresSmart Materials for Construction

Ferrite based metamaterials with thermo-tunable negative refractive index

Ke Bi、Guoyan Dong、Xiaojian Fu 等 4 位作者2013-09-23Applied Physics Letters

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Ke Bi, Guoyan Dong, Xiaojian Fu, Ji Zhou; Ferrite based metamaterials with thermo-tunable negativ…

Metamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon ResearchAdvanced Antenna and Metasurface Technologies

Preparation of microcapsulated ammonium polyphosphate, pentaerythritol with glycidyl methacrylate, butyl methacrylate and their synergistic flame‐ retardancy for ethylene vinyl acetate copolymer

Qinbo Tang、Bibo Wang、Gang Tang 等 8 位作者2013-09-23Polymers for Advanced Technologies

A new series of microcapsules containing pentaerythritol (PER) and ammonium polyphosphate (APP) with glycidyl methacrylate and butyl methacrylate as shell materials were synthesized by in situ polymerization. The structure and performance of the microencapsulated APP and microencapsulated PER were characterized by Fou…

Fire dynamics and safety researchFlame retardant materials and propertiesSynthesis and properties of polymers

Adhesion of moving droplets in microchannels

Haosheng Chen、Enkai Dong、Jiang Li 等 4 位作者2013-09-23Applied Physics Letters

When oil drops in a continuous water phase move from the hydrophilic to the hydrophobic section of a microchannel, they can be controlled to either adhere or not adhere on the channel by changing the capillary number. Using experiments and a model for the thin film flow, we show that the critical capillary number for…

Surface Modification and SuperhydrophobicityInnovative Microfluidic and Catalytic Techniques InnovationElectrowetting and Microfluidic Technologies

Glass transition temperature and topological constraints of sodium borophosphate glass-forming liquids

Qi Jiang、Huidan Zeng、Zhao Liu 等 8 位作者2013-09-23The Journal of Chemical Physics

Sodium borophosphate glasses exhibit intriguing mixed network former effect, with the nonlinear compositional dependence of their glass transition temperature as one of the most typical examples. In this paper, we establish the widely applicable topological constraint model of sodium borophosphate mixed network former…

Material Dynamics and PropertiesGlass properties and applicationsPhase-change materials and chalcogenides

Photo-Orientation of Azobenzene-Containing Liquid-Crystalline Materials by Means of Domain Structure Rearrangement

Alexey V. Bogdanov、Andrey Kh. Vorobiev2013-09-23The Journal of Physical Chemistry B

A novel mechanism of photo-orientation of azobenzene-containing liquid-crystalline materials is proposed. This mechanism is based on the notion of photochemically induced domain rearrangement driven by destabilization of liquid-crystalline phase in light absorbing domains due to photochemical formation of non-mesogeni…

Liquid Crystal Research AdvancementsPhotochromic and Fluorescence ChemistryAdvanced Materials and Mechanics

Modification of polyethersulfone membranes using terpolymers engineered and integrated antifouling and anticoagulant properties

Chao He、Chuanxiong Nie、Wei‐Feng Zhao 等 8 位作者2013-09-23Polymers for Advanced Technologies

In this study, random terpolymers of methoxy poly(ethylene glycol)‐poly(sodium styrene sulfonate‐co‐methyl methacrylate) (MPEG‐P(SSNa‐co‐MMA)) integrated with antifouling and anticoagulant properties were synthesized by atom transfer radical polymerization (ATRP) for the first time and confirmed by Fourier transform i…

Membrane Separation TechnologiesElectrospun Nanofibers in Biomedical ApplicationsPolymer Surface Interaction Studies

Controlled Alignment of Filamentous Supramolecular Assemblies of Biomolecules into Centimeter‐Scale Highly Ordered Patterns by Using Nature‐Inspired Magnetic Guidance

Binrui Cao、Ye Zhu、Lin Wang 等 4 位作者2013-09-23Angewandte Chemie International Edition

Magnetic nanoparticles (MNPs), which can be aligned along a magnetic field, were applied to generate large-scale assemblies of biological nanofibers with the orientation of the constituent nanofibers defined by the applied magnetic field. When decorated with MNPs, these nanofibers could be guided by the external magne…

Microfluidic and Bio-sensing TechnologiesSupramolecular Self-Assembly in MaterialsDiatoms and Algae Research

Mechanical properties and degradation studies of poly(D,L‐lactide‐co‐glycolide) 50:50/graphene oxide nanocomposite films

Jin Joo Park、Eun Jeong Yu、Won‐Ki Lee 等 4 位作者2013-09-23Polymers for Advanced Technologies

Poly(D,L‐lactide‐co‐glycolide) 50:50 (PLGA)/graphene oxide (GO) nanocomposite films were prepared with various GO weight fractions. A significant enhancement of mechanical properties of the PLGA/GO nanocomposite films was obtained with GO weight fractions. The incorporation of only 5 wt% of GO resulted in an ~2.5‐fold…

Nanocomposite Films for Food Packagingbiodegradable polymer synthesis and propertiesGraphene and Nanomaterials Applications

Cyclometalated Ruthenium(II) Complexes Featuring Tridentate Click‐Derived Ligands for Dye‐Sensitized Solar Cell Applications

Benjamin Schulze、D. G. Brown、Kiyoshi C. D. Robson 等 8 位作者2013-09-23Chemistry - A European Journal

A series of heteroleptic bis(tridentate) Ru(II) complexes featuring N^C^N-cyclometalating ligands is presented. The 1,2,3-triazole-containing tridentate ligands are readily functionalized with hydrophobic side chains by means of click chemistry and the corresponding cyclometalated Ru(II) complexes are easily synthesiz…

TiO2 Photocatalysis and Solar CellsPolyoxometalates: Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis

Modification of electric and magnetic dipole emission in anisotropic plasmonic systems

Н. Ногинова、Rabia Hussain、M. A. Noginov 等 5 位作者2013-09-23Optics Express

In order to investigate the effects of plasmonic environments on spontaneous emission of magnetic and electric dipoles, we have studied luminescence of Eu³⁺ ions in close vicinity to gold nanostrip arrays. Significant changes in the emission kinetics, emission polarization, and radiation patterns have been observed in…

Metamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon ResearchPhotonic Crystals and Applications

Preparation and characterisation of vancomycin-impregnated gelatin microspheres/silk fibroin scaffold

Yong Lan、Weichang Li、Rui Guo 等 8 位作者2013-09-23Journal of Biomaterials Science Polymer Edition

A type of antibacterial silk fibroin (SF) scaffold was developed and characterised as a potential functional wound dressing for acute trauma treatment. To achieve this, SF solution was mixed with previously fabricated vancomycin (Vm)-loaded gelatin (G) microspheres, followed by a freeze-drying step. Some physical and…

Bone Tissue Engineering MaterialsWound Healing and TreatmentsSilk-based biomaterials and applications

Effect of copper tube casing on strain distribution and mechanical properties of Al-7075 alloy processed by equal channel angular pressing

M.H. Shaeri、Faramarz Djavanroodi、M. Sedighi 等 6 位作者2013-09-23The Journal of Strain Analysis for Engineering Design

Equal channel angular pressing is an effective fabrication process for obtaining ultrafine-grained materials. In the current research, the effect of copper tube casing on the effective strain and microhardness distribution of equal channel angular pressing processed Al-7075 alloy was investigated. The material was pre…

Microstructure and mechanical propertiesMetal Forming Simulation TechniquesAluminum Alloys Composites Properties

Temperature-dependent tunneling electroresistance in Pt/BaTiO3/SrRuO3 ferroelectric tunnel junctions

Zheng Wen、Lü You、Junling Wang 等 5 位作者2013-09-23Applied Physics Letters

Tunneling electroresistance of Pt/BaTiO3/SrRuO3 ferroelectric tunnel junctions is investigated as a function of temperature. Two distinct resistance states that are dependent on polarization direction in the BaTiO3 barrier layer and bipolar resistance switching are observed at various temperatures from 10 to 290 K. Th…

Ferroelectric and Piezoelectric MaterialsAdvanced Memory and Neural ComputingElectronic and Structural Properties of Oxides

Magnetic structure and lattice contraction in Mn3NiN

Meimei Wu、Cong Wang、Ying Sun 等 8 位作者2013-09-23Journal of Applied Physics

The nuclear and magnetic structures of the cubic antiperovskite compound Mn3NiN are studied using neutron powder diffraction as a function of temperature and applied magnetic field. On cooling in zero field from the paramagnetic state, an anomalous lattice expansion abruptly occurs as the long range antiferromagnetic…

Advanced Battery Materials and TechnologiesMagnetic and transport properties of perovskites and related materialsThermal Expansion and Ionic Conductivity

Synthesis and characterization of new thermally stable polymers as new high-performance engineering plastics

Ayman S. Al-Hussaini2013-09-23High Performance Polymers

A series of new poly(imino ether)s (PIEs) have been synthesized via palladium-catalyzed polycondensation of 4,4′-dibromodiphenyl ether with various aromatic diamines. All PIEs were fully characterized by Fourier transform infrared spectroscopy, elemental analyses, differential scanning calorimetry, thermogravimetric a…

Organic Electronics and PhotovoltaicsConducting polymers and applicationsSynthesis and properties of polymers