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Ce-doped and Ce/Au-codoped alumino-phospho-silicate fibers: Spectral attenuation trends at high-energy electron irradiation and posterior low-power optical bleaching

Alexander V. Kir’yanov、Sumana Ghosh、Mukul Chandra Paul 等 6 位作者2014-02-07Optical Materials Express

We report a study of attenuation spectra’ transformations in a couple of Cerium (Ce) doped alumino-phospho-silicate fibers (one of them codoped with gold (Au)), occurring under irradiation by a beam of high-energy β-electrons. The experimental data reveals an essential effect of β-irradiation upon the absorptive prope…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsLaser-induced spectroscopy and plasma

About the Influence of Double Bonds in the APPECVD of Acrylate‐Like Precursors: A Mass Spectrometry Study of the Plasma Phase

Bernard Nisol、Grégory Arnoult、Thomas Bieber 等 8 位作者2014-02-07Plasma Processes and Polymers

This work deals with the in‐situ mass spectrometric (MS) characterization of gases during the atmospheric pressure plasma‐enhanced chemical vapor deposition of propyl isobutyrate (PiB) and allylmethacrylate (AMA). By monitoring the fragments of interest, we are trying to understand the mechanisms involved in the plasm…

Surface Modification and SuperhydrophobicityMass Spectrometry Techniques and ApplicationsForensic Toxicology and Drug Analysis

Theoretical studies of vibrational spectra of [N(CH3)4]2ZnCl4−yBrycompounds withy= 0, 2 and 4

Karim Karoui、Mohamed Ben Bechir、Abdallah Ben Rhaiem 等 6 位作者2014-02-07Phase Transitions

The infrared and Raman spectra of [N(CH3)4]2ZnCl4−yBry, where y = 0, 2 and 4, have been analyzed with ab initio calculations of the vibrational characteristics of constitutive polyhedra, tetramethylammonium [N(CH3)4]+ and [ZnCl4−xBrx]2− (x = 0, 1, 2, 3 and 4) tetrahedra. The optimized geometries, calculated vibrationa…

Nonlinear Optical Materials ResearchSolid-state spectroscopy and crystallographyMolecular Spectroscopy and Structure

Multiphoton Harvesting in an Angular Carbazole-Containing Zn(II)-Coordinated Random Copolymer Mediated by Twisted Intramolecular Charge Transfer State

Tingchao He、Yang Gao、Rui Chen 等 8 位作者2014-02-07Macromolecules

Multiphoton excited fluorescent probes with highly emissive, photostable, low cytotoxic properties are very important for photodynamic therapy, sensing, and bioimaging, etc., even though still challenging. Here, we report the synthesis and spectroscopic studies of two statistical Zn(II)-coordinated copolymers containi…

Organic Electronics and PhotovoltaicsLuminescence and Fluorescent MaterialsNonlinear Optical Materials Studies

Effects of different temperatures and additives on the metastable zone width precipitation kinetics of NaBO2

Mustafa Kaya、Ayhan Abdullah Ceyhan、Ömer Şahi̇n2014-02-07Russian Journal of Physical Chemistry A

In this study, the sodium metaborate, which is applicable in various industrial areas, and its metastable zone width that is very important for its production by crystallization, and its nucleation are investigated to obtain the necessary thermodynamic parameters. The polythermal and isothermal method has been used fo…

Hydrogen Storage and MaterialsHybrid Renewable Energy SystemsChemical Looping and Thermochemical Processes

Magnetic and magnetocaloric properties of La0.85(Na1−xKx)0.15MnO3 ceramics produced by reactive spark plasma sintering

Y. Regaieg、Lorette Sicard、Judith Monnier 等 6 位作者2014-02-07Journal of Applied Physics

La0.85(Na1−xKx)0.15MnO3 (0 ≤ x ≤ 1) ceramics were synthesized from the raw La(OH)3, NaOH, KOH, and MnO2 powders using Reactive Spark Plasma Sintering. All the compounds were obtained as pure, dense, and ultrafine grained pellets. The Rietveld refinement of the X-Ray powder diffraction shows that all our synthesized sa…

Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsThermal Expansion and Ionic Conductivity

Synthesis and Switching the Aromatic Character of Oxatriphyrins(2.1.1)

Miłosz Pawlicki、Karolina Hurej、Ludmiła Szterenberg 等 4 位作者2014-02-07Angewandte Chemie

Abstract Triangularly shaped, contracted porphyrinoids belong to a group of molecules where the geometry significantly modifies the observed electronic properties. The need for a controllable, effective, and widely applicable approach to triphyrins drives extensive research towards macrocyclic materials that act as po…

Porphyrin and Phthalocyanine ChemistrySynthesis and Properties of Aromatic CompoundsSurface Chemistry and Catalysis

Hysteretic behavior in the optical response of the underdoped Fe-arsenideBa(Fe1−xCox)2As2in the electronic nematic phase

C. Mirri、A. Dusza、Sandra Bastelberger 等 7 位作者2014-02-07Physical Review B

We use a new technique that allows in situ variation of uniaxial stress to probe the polarization dependence of the optical reflectivity of the representative underdoped iron-arsenide $\text{Ba(}{\text{Fe}}_{1\ensuremath{-}x}{\text{Co}}_{x}{\text{)}}_{2}{\text{As}}_{2}$ through the tetragonal-to-orthorhombic structura…

Rare-earth and actinide compoundsCrystal Structures and PropertiesIron-based superconductors research

Preparation of Ultrafine Carbon Spheres by Controlled Polymerization of Furfuryl Alcohol in Microdroplets

Minhua Ju、Changfeng Zeng、Chongqing Wang 等 4 位作者2014-02-07Industrial & Engineering Chemistry Research

Carbon microspheres with mean particle sizes of 0.7–1.2 μm were prepared by polymerization of furfuryl alcohol (FA) in H 2 SO 4 solution droplets without any surfactant, followed by pyrolysis. FA was introduced by diffusion from FA-containing oil phase into the droplets formed in an interdigital micromixer. The oil to…

Supercapacitor Materials and FabricationMesoporous Materials and CatalysisAerogels and thermal insulation

Deposition of Water Stable Plasma Polymerized Acrylic Acid/MBA Organic Coatings by Atmospheric Pressure Air Plasma Jet

Dhia Ben Salem、Olivier Carton、Houssam Fakhouri 等 5 位作者2014-02-07Plasma Processes and Polymers

Water stable plasma polymerized acrylic acid/methylene-bis-acrylamide (ppAA/MBA) thin films have been deposited with an atmospheric pressure air plasma jet, a fast technique to grow organic thin films. To increase the stability of the coatings, a cross-linking agent (MBA) was added to the precursor (AA), which was int…

Surface Modification and SuperhydrophobicityDiamond and Carbon-based Materials ResearchPlasma Applications and Diagnostics

Upper critical field ofNaFe1−xCoxAs superconductors

Saman Ghannadzadeh、Jack D. Wright、Francesca R. Foronda 等 6 位作者2014-02-07Physical Review B

The upper critical field of ${\text{NaFe}}_{1\ensuremath{-}x}$${\text{Co}}_{x}$As was measured from $x=0$ to $x=0.08$, with the magnetic field applied parallel (${H}_{\mathrm{c}2}^{\ensuremath{\parallel}}$) and normal (${H}_{\mathrm{c}2}^{\ensuremath{\perp}}$) to the planes. The data were fitted using one-band and two…

Rare-earth and actinide compoundsIron-based superconductors researchSuperconductivity in MgB2 and Alloys

Micropillar Cavity Containing a CdTe Quantum Dot with a Single Manganese Ion

W. Pacuski、Tomasz Jakubczyk、C. Kruse 等 13 位作者2014-02-07Crystal Growth & Design

High Resolution Image Download MS PowerPoint Slide We report on the method of fabrication of a photonic microstructure that contains a single magnetic ion. Exactly one manganese ion was introduced into a self-assembled CdTe quantum dot, which was located in a ZnTe based micropillar cavity. The multistep fabrication pr…

Semiconductor Quantum Structures and DevicesQuantum Dots Synthesis And PropertiesPhotonic Crystals and Applications

Lattice architecture effect on the cooperativity of spin transition coordination polymers

Daniel Chiruta、Catalin-Maricel Jureschi、Jorge Linarès 等 5 位作者2014-02-07Journal of Applied Physics

We have investigated in the framework of the Ising-like model, by means of Monte Carlo Metropolis method with open boundary condition, the architecture effect on the cooperativity of spin transition coordination polymers. We have analyzed the influence of several physical parameters (size, pressure, and edge effects)…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesOrganic and Molecular Conductors Research

Flame Retardancy and Thermal Performance of Polypropylene Treated With the Intumescent Flame Retardant, Piperazine Spirocyclic Phosphoramidate

Bin Li、Zhaoshun Zhan、Hongfeng Zhang 等 4 位作者2014-02-07Journal of Vinyl and Additive Technology

Piperazine spirocyclic phosphoramidate (PSP), a novel halogen‐free intumescent flame retardant, was synthesized and used to improve the flame retardancy and dripping resistance of polypropylene (PP) combined with ammonium polyphosphate (APP) and a triazine polymer charring‐foaming agent (CFA). The optimum flame‐retard…

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

Photocontrol Over Self‐Assembled Nanostructures of π–π Stacked Dyes Supported by the Parallel Conformer of Diarylethene

Shiki Yagai、Kazunori Iwai、Mitsuaki Yamauchi 等 9 位作者2014-02-07Angewandte Chemie

Abstract Diarylethenes (DAEs) have rarely been used in the design of photoresponsive supramolecular assemblies with a well‐defined morphology transition owing to rather small structural changes upon photoisomerization. A supramolecular design based on the parallel conformation of DAEs enables the construction of photo…

Supramolecular Self-Assembly in MaterialsPhotochromic and Fluorescence ChemistryPolydiacetylene-based materials and applications

Preferred Features of a Fluorine-19 MRI Probe for Amyloid Detection in the Brain

Daijiro Yanagisawa、Hiroyasu Taguchi、Nor Faeizah Ibrahim 等 10 位作者2014-02-07Journal of Alzheimer s Disease

Fluorine-19 magnetic resonance imaging (19F MRI) could be a promising approach for imaging amyloid deposition in the brain. However, the required features of a 19F MRI probe for amyloid detection remain unclear. In the present study, we investigated a series of compounds as potent 19F probes that could prevent the red…

Alzheimer's disease research and treatmentsAdvanced MRI Techniques and ApplicationsLanthanide and Transition Metal Complexes

A nonlocal sinusoidal plate model for micro/nanoscale plates

Huu‐Tai Thai、Thuc Vo、Trung-Kien Nguyen 等 4 位作者2014-02-07Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science

A nonlocal sinusoidal plate model for micro/nanoscale plates is developed based on Eringen’s nonlocal elasticity theory and sinusoidal shear deformation plate theory. The small-scale effect is considered in the former theory while the transverse shear deformation effect is included in the latter theory. The proposed m…

Composite Structure Analysis and OptimizationThermoelastic and Magnetoelastic PhenomenaNonlocal and gradient elasticity in micro/nano structures

Synthesis of Volcano‐Like CdS/Organic Nanocomposite

Fatemeh Davar、Mohammad Reza Loghman‐Estarki、Masoud Salavati‐Niasari 等 4 位作者2014-02-07International Journal of Applied Ceramic Technology

Cadmium sulfide/organic nanocomposites, which were based on long nanowires, were synthesized by a simple reaction between cadmium nitrate and thioglycolic acid ( TGA ) at room temperature. The products were characterized by X ‐ray diffraction ( XRD ), scanning electron microscopy ( SEM ), transmission electron microsc…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanowire Synthesis and Applications

Synthesis and characterization of reversible and self‐healable networks based on acylhydrazone groups

Demetris E. Apostolides、Costas S. Patrickios、Epameinondas Leontidis 等 5 位作者2014-02-07Polymer International

A series of seven dynamic covalent networks based on pentaerythritol tetra(benzohydrazide) and 1,10‐decanediol dibenzaldehyde were prepared in N , N ‐dimethylformamide ( DMF ). The equilibrium degree of swelling in DMF and the sol fraction displayed a minimum at or near the hydrazide–benzaldehyde stoichiometric ratio.…

Polymer composites and self-healingChemical Synthesis and ReactionsCovalent Organic Framework Applications

Effect of nanofillers on low energy impact performance of sandwich structures with nanoreinforced polyurethane foam cores

Sophia Sachse、Manohar Poruri、Francesco Silva 等 6 位作者2014-02-07Journal of Sandwich Structures & Materials

Sandwich panels were fabricated with nanoclay-filled polyurethane foams and glass fiber-reinforced polyamide and polypropylenes face sheets. Nanoclay-filled foam cores, with organophilic montmorillonite loadings of 0–10 wt%, were synthesized through polyaddition of the polyol premix with 4,4'-diphenylmethane diisocyan…

Polymer Nanocomposites and PropertiesPolymer composites and self-healingPolymer Foaming and Composites