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Alkali-Metal Thiogermanates: Sodium Channels and Variations on the La3CuSiS7 Structure Type

Amitava Choudhury、Peter K. Dorhout2014-11-20Inorganic Chemistry

Five new isotypic quaternary chalcogenides containing rare-earth metal atoms crystallizing in the hexagonal noncentrosymmetric space group P6(3) (No. 173) with the La(3)CuSiS(7) structure type have been synthesized by reacting the appropriate anhydrous rare-earth trichloride with sodium thiogermanate, Na(2)GeS(3). The…

Crystal Structures and PropertiesAdvanced Condensed Matter PhysicsIron-based superconductors research

Poly(2-oxazoline)-Based Nanogels as Biocompatible Pseudopolypeptide Nanoparticles

Camille Legros、Anne‐Laure Wirotius、Marie‐Claire De Pauw‐Gillet 等 6 位作者2014-11-20Biomacromolecules

Hydrophilic nanogels based on partially hydrolyzed poly(2-ethyl-2-oxazoline) were synthesized in dilute aqueous media in the presence of 1,6-hexanediol diglycidyl ether as a cross-linker. Nanogel formation was monitored by DLS and HSQC NMR spectroscopy, and the final nano-objects were characterized by DLS, TEM, AFM, a…

Nanoparticle-Based Drug DeliveryHydrogels: synthesis, properties, applicationsRNA Interference and Gene Delivery

Classical Mobility of Highly Mobile Crystal Defects

Thomas D. Swinburne、S. L. Dudarev、A. P. Sutton2014-11-20Physical Review Letters

Highly mobile crystal defects such as crowdions and prismatic dislocation loops exhibit an anomalous temperature independent mobility unexplained by phonon scattering analysis. Using a projection operator, without recourse to elasticity, we derive analytic expressions for the mobility of highly mobile defects and disl…

Microstructure and mechanical propertiesForce Microscopy Techniques and ApplicationsIon-surface interactions and analysis

4‐Aryl‐3,5‐bis(arylethynyl)aryl‐4H‐1,2,4‐triazoles: Multitasking Skeleton as a Self‐Assembling Unit

M. Jesús Pastor、Iván Torres‐Moya、Cristina Cebrián 等 11 位作者2014-11-20Chemistry - A European Journal

The synthesis of a series of 4-aryl-3,5-bis(arylethynyl)aryl-4H-1,2,4-triazoles derivatives is reported and the influence exerted by peripheral substitution on the morphology of the aggregates generated from these 1,2,4-triazoles is investigated by SEM imaging. The presence of paraffinic side chains results in long fi…

Chemical Synthesis and AnalysisLuminescence and Fluorescent MaterialsSynthesis and Properties of Aromatic Compounds

Fluorescent cadmium telluride quantum dots embedded chitosan nanoparticles: a stable, biocompatible preparation for bio-imaging

Vandana Ghormade、Haribhau Gholap、Sonia Kale 等 6 位作者2014-11-20Journal of Biomaterials Science Polymer Edition

Fluorescent cadmium telluride quantum dots (CdTe QDs) are an optically attractive option for bioimaging, but are known to display high cytotoxicity. Nanoparticles synthesized from chitosan, a natural biopolymer of β 1-4 linked glucosamine, display good biocompatibility and cellular uptake. A facile, green synthetic st…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCarbon and Quantum Dots Applications

A Two‐in‐one Pincer Ligand and its Diiron(II) Complex Showing Spin State Switching in Solution through Reversible Ligand Exchange

Subhas Samanta、Serhiy Demesko、Sebastian Dechert 等 4 位作者2014-11-20Angewandte Chemie International Edition

A novel pyrazolate-bridged ligand providing two {PNN} pincer-type compartments has been synthesized. Its diiron(II) complex LFe2(OTf)3(CH3CN) (1; Tf = triflate) features, in solid state, two bridging triflate ligands, with a terminal triflate and a MeCN ligand completing the octahedral coordination spheres of the two…

Metal complexes synthesis and propertiesMagnetism in coordination complexes

Grain size and microhardness evolution during annealing of a magnesium alloy processed by high-pressure torsion

L. Cupertino-Malheiros、Roberto B. Figueiredo、Terence G. Langdon2014-11-20Journal of Materials Research and Technology

High-pressure torsion (HPT) was used to impose severe plastic deformation on a magnesium alloy AZ31. The material was processed for 0.5, 1, 2, 3, 5 and 7 turns at room temperature under a pressure of 6.0 GPa. Samples were annealed for 1800 s at temperatures of 373 K, 423 K, 473 K, 573 K and 673 K. Microhardness tests…

Microstructure and mechanical propertiesMagnesium Alloys: Properties and ApplicationsAluminum Alloys Composites Properties

The effect of graphene on the performance of an electrochemical flow capacitor

Soorya Sasi、Abhinav Murali、Shantikumar V. Nair 等 5 位作者2014-11-20Journal of Materials Chemistry A

A schematic of an electrochemical flow capacitor device, in which graphene-based slurries were used as flow liquids.

Supercapacitor Materials and FabricationAdvanced Sensor and Energy Harvesting MaterialsAdvanced battery technologies research

A New Memetic Algorithm With Fitness Approximation for the Defect-Tolerant Logic Mapping in Crossbar-Based Nanoarchitectures

Bo Yuan、Bin Li、Thomas Weise 等 4 位作者2014-11-20IEEE Transactions on Evolutionary Computation

The defect-tolerant logic mapping (DTLM), which has been proved to be an NP-complete combinatorial search problem, is a key step for logic implementation in emerging crossbar-based nano-architectures. However, no practically satisfactory solution has been suggested for the DTLM until now. In this paper, the problem of…

Advanced Memory and Neural ComputingMachine Learning in Materials ScienceFerroelectric and Negative Capacitance Devices

Damping effects in doped graphene: The relaxation-time approximation

Ivan Kupčić2014-11-20Physical Review B

The dynamical conductivity of interacting multiband electronic systems derived by Kup\ifmmode \check{c}\else \v{c}\fi{}i\ifmmode \acute{c}\else \'{c}\fi{} et al. [J. Phys.: Condens. Matter 90, 145602 (2013)] is shown to be consistent with the general form of the Ward identity. Using the semiphenomenological form of th…

Graphene research and applicationsQuantum and electron transport phenomenaSurface and Thin Film Phenomena

pH-programmable self-assembly of plasmonic nanoparticles: hydrophobic interaction versus electrostatic repulsion

Weikun Li、I. Kanyó、Chung‐Hao Kuo 等 5 位作者2014-11-20Nanoscale

We report a general strategy to conceptualize a new design for the pH-programmable self-assembly of plasmonic gold nanoparticles (AuNPs) tethered by random copolymers of poly(styrene-co-acrylic acid) (P(St-co-AA)). It is based on using pH as an external stimulus to reversibly change the surface charge of polymer tethe…

Gold and Silver Nanoparticles Synthesis and ApplicationsMicro and Nano RoboticsPickering emulsions and particle stabilization

Sources, effects and risks of ionizing radiation, UNSCEAR 2013 report, part I

United Nations2014-11-20Report of the United Nations Scientific Committee on the Effects of Atomic Radiation

This publication, the first of two volumes of scientific annexes, provides a detailed review of scientific material that underpins the Committee's evaluation of the radiation doses and effects due to the accident which occurred at the Fukushima Daiichi nuclear power station on 11 March 2011. It covers the amount and c…

Radioactive contamination and transferGraphite, nuclear technology, radiation studies

Charged defects and defect‐induced processes in nitrogen films

Elena Savchenko、I. V. Khyzhniy、Sergey Uyutnov 等 7 位作者2014-11-20Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics

Abstract Radiation effects in solid nitrogen irradiated with an electron beam were studied with emphasis on the role of charged centers in radiation‐induced phenomena. The experiments were performed employing luminescence method and activation spectroscopy techniques – spectrally resolved thermally stimulated luminesc…

Luminescence Properties of Advanced MaterialsSemiconductor materials and devicesElectron and X-Ray Spectroscopy Techniques

Seam slippage and seam strength behavior of elastic woven fabrics under static loading

Rostam Namiranian、Saeed Shaikhzadeh Najar、Seyed Mohammad Etrati 等 4 位作者2014-11-20OpenAlex

Effects of fabric extensibility and stitch density on seam slippage and strength behavior of elastic woven fabrics have been studied. Six fabric samples with different values of elasticity have been woven by changing the number of elastic core-spun cotton yarns and normal ring cotton yarns in the weft direction and th…

Mechanical Behavior of CompositesTextile materials and evaluationsStructural Analysis and Optimization

Chemical Vapor Deposition of Phosphorous- and Boron-Doped Graphene Using Phenyl-Containing Molecules

Mekan Ovezmyradov、Igor V. Magedov、Liliya V. Frolova 等 8 位作者2014-11-20Journal of Nanoscience and Nanotechnology

Simultaneous chemical vapor deposition (CVD) of graphene and "in-situ" phosphorous or boron doping of graphene was accomplished using Triphenylphosphine (TPP) and 4-Methoxyphenylboronic acid (4-MPBA). The TPP and 4-MPBA molecules were sublimated and supplied along with CH4 molecules during graphene growth at atmospher…

Carbon Nanotubes in CompositesGraphene research and applicationsMolecular Junctions and Nanostructures

Effect of Thermal Treatment on the Formation, Textural and Electrical Conductivity Properties of Nanocrystalline Tb4O7

Bahaa M. Abu‐Zied、Abdel-Reheem N. Mohamed、Abdullah M. Asiri2014-11-20Journal of Nanoscience and Nanotechnology

Nanocrystalline Tb4O7 was fabricated by the calcination of its precursor, which was prepared by the precipitation method using NaOH as a precipitant. The phase changes accompanying the thermal treatment of the terbium parent were monitored using X-ray diffractometry (XRD) and thermogravimetry (TGA). The Calcination wa…

Polyoxometalates: Synthesis and ApplicationsCatalysis and Oxidation ReactionsMicrowave Dielectric Ceramics Synthesis

Evolution of Silver Nanoparticles within an Aqueous Dispersion of Nanosized Zeolite Y: Mechanism and Applications

Michael Severance、Prabir K. Dutta2014-11-20The Journal of Physical Chemistry C

Stable aqueous dispersion of silver ion-exchanged nanozeolite Y was reacted with the three common dihydroxyphenols, hydroquinone, catechol, and resorcinol. With hydroquinone and catechol, there was rapid reduction of the intrazeolitic silver to form metallic silver with complete destruction of the zeolite framework. R…

Nanoparticles: synthesis and applicationsGold and Silver Nanoparticles Synthesis and ApplicationsNanomaterials for catalytic reactions

Clues to the Electrical Switching Mechanism of Carbazole-Containing Polyimide Thin Films

Brian J. Ree、Wonsang Kwon、Kyungtae Kim 等 7 位作者2014-11-20ACS Applied Materials & Interfaces

The mechanism behind electrical memory behavior of carbazole-containing polyimides (PIs) in nanoscale thin films was investigated. For this investigation, a series of poly(3,3'-dihydroxy-4,4'-biphenylene-co-3,3'-bis(N-ethylenyloxycarbazole)-4,4'-biphenylene hexafluoro-isopropylidenedi-phthalimide)s (6F-HAB-HABCZn PIs)…

Advanced Memory and Neural ComputingConducting polymers and applicationsSynthesis and properties of polymers

Scaffolds from alternating block polyurethanes of poly(ɛ-caprolactone) and poly(ethylene glycol) with stimulation and guidance of nerve growth and better nerve repair than autograft

Yuqing Niu、Linjing Li、Kevin C. Chen 等 8 位作者2014-11-20Journal of Biomedical Materials Research Part A

Nerve repair scaffolds from novel alternating block polyurethanes (PUCL-alt-PEG) based on PCL and PEG without additional growth factors or proteins were prepared by a particle leaching method. The scaffolds have pore size 10-20 µm and porosity 92%. Mechanical tests showed that the polyurethane scaffolds have maximum l…

biodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical ApplicationsPolymer composites and self-healing

Photoelectrochemical Water Splitting on a Delafossite CuGaO2Semiconductor Electrode

Myeongsoon Lee、Don Kim、Yong Tae Yoon 等 4 位作者2014-11-20Bulletin of the Korean Chemical Society

A pellet of polycrystalline $CuGaO_2$ with a delafossite structure was prepared from $Ga_2O_3$ and CuO by high-temperature solid-state synthesis. The $CuGaO_2$ pellet was a p-type semiconductor for which the electrical conductivity, carrier density, carrier mobility and Seebeck coefficient were $5.34{\times}10^{-2}{\O…

Advanced Photocatalysis TechniquesZnO doping and propertiesCopper-based nanomaterials and applications