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Template free synthesis of natural carbohydrates functionalised fluorescent silver nanoclusters

Alireza Ebrahiminezhad、Aydin Berenjian、Younes Ghasemi2016-03-21IET Nanobiotechnology

Template-assisted synthesis is one of the most recognised techniques for fabrication of silver nanoclusters (AgNCs). However, this process is time consuming, toxic and expensive. In this study, the authors report a completely novel approach for the green and facile synthesis of AgNCs using Matricaria chamomilla, witho…

Gold and Silver Nanoparticles Synthesis and ApplicationsNanocluster Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis

A wideband wide‐angle ultrathin low profile metamaterial microwave absorber

Deepak Sood、C. C. Tripathi2016-03-21Microwave and Optical Technology Letters

ABSTRACT A simple design of wideband wide‐angle ultrathin low profile metamaterial microwave absorber has been presented. The unit cell of proposed design is composed of an inclined metallic hexagonal patch printed on a grounded dielectric substrate. The simulation result shows 10‐dB absorption bandwidth of 5.02 GHz f…

Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies

Phonon anomalies in some iron telluride materials

C. C. Homes、Yaomin Dai、John Schneeloch 等 5 位作者2016-03-21Physical review. B./Physical review. B

The detailed temperature dependence of the infrared-active mode in ${\mathrm{Fe}}_{1.03}\mathrm{Te}$ (${T}_{N}\ensuremath{\simeq}68$ K) and ${\mathrm{Fe}}_{1.13}\mathrm{Te}$ (${T}_{N}\ensuremath{\simeq}56$ K) has been examined, and the position, width, strength, and asymmetry parameter have been determined using an as…

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

Ag- and Mn-doped ZnInS/ZnS dual-emission quantum dots with zone tunability in the color coordinate

Guangguang Huang、Chunlei Wang、Shuhong Xu 等 6 位作者2016-03-21Nanotechnology

In this work, we used Ag- and Mn-doped ZnInS/ZnS quantum dots (QDs) acting as a new generation of nontoxic dual-emission QDs with simultaneous tunable emission wavelengths and dual-emission ratiometric, which makes nontoxic dual-emission QDs with broad zone tunability in the color coordinate. The Ag-doped ZnInS ternar…

Quantum Dots Synthesis And PropertiesCarbon and Quantum Dots ApplicationsNanocluster Synthesis and Applications

Characterization of the Intermediate in and Identification of the Repair Mechanism of (6‐4) Photolesions by Photolyases

Shirin Faraji、Dongping Zhong、Andreas Dreuw2016-03-21Angewandte Chemie International Edition

Quantum mechanics/molecular mechanics calculations are employed to assign previously recorded experimental spectroscopic signatures of the intermediates occurring during the photo-induced repair of (6-4) photolesions by photolyases to specific molecular structures. Based on this close comparison of experiment and theo…

Light effects on plantsPhotochromic and Fluorescence ChemistryPhotoreceptor and optogenetics research

A Redox‐Active Binder for Electrochemical Capacitor Electrodes

Corentin Benoît、Dóra Demeter、Daniel Bélanger 等 4 位作者2016-03-21Angewandte Chemie International Edition

A promising strategy for increasing the performance of supercapacitors is proposed. Until now, a popular strategy for increasing the specific capacity of the electrode consists of grafting redox molecules onto a high surface area carbon structure to add a faradaic contribution to the charge storage. Unfortunately, the…

Supercapacitor Materials and FabricationConducting polymers and applicationsAdvanced battery technologies research

Strong Exchange Coupling in a Trimetallic Radical‐Bridged Cobalt(II)‐Hexaazatrinaphthylene Complex

Jani O. Moilanen、Nicholas F. Chilton、Benjamin M. Day 等 5 位作者2016-03-21Angewandte Chemie

Abstract Reducing hexaazatrinaphthylene (HAN) with potassium in the presence of 18‐c‐6 produces [{K(18‐c‐6)}HAN], which contains the S=1/2 radical [HAN] .− . The [HAN] .− radical can be transferred to the cobalt(II) amide [Co{N(SiMe 3 ) 2 } 2 ], forming [K(18‐c‐6)][(HAN){Co(N′′) 2 } 3 ]; magnetic measurements on this…

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

Corrosion evaluation of Ti-6Al-4V parts produced with electron beam melting machine

Dana Abdeen、Bruce R. Palmer2016-03-21Rapid Prototyping Journal

Purpose This paper aims to evaluate the corrosion behavior of Ti-6Al-4V parts produced with electron beam melting (EBM) machine and compare it with wrought Ti-6Al-4V alloy. Design/methodology/approach Potentiodynamic and potentiostatic tests were applied on EBM Ti-6Al-4V in 3.5 per cent mass NaCl solution to determine…

Hydrogen embrittlement and corrosion behaviors in metalsWelding Techniques and Residual StressesTitanium Alloys Microstructure and Properties

Synthesis of Azide-Functionalized Hydroxyl-Terminated Polybutadiene

Chandra Shekhar Pant、S. S. N. M. Santosh Mada、Mehilal 等 5 位作者2016-03-21Journal of Energetic Materials

This article reports ways to functionalize hydroxyl-terminated polybutadiene (HTPB) by azide groups to impart energetic properties to the polymer. Two different synthetic approaches were explored to synthesize azide-functionalized hydroxyl-terminated polybutadiene (azide-HTPB). The functionalized polymer was analyzed…

Energetic Materials and CombustionInjection Molding Process and PropertiesThermal and Kinetic Analysis

Rheological and Mechanical Behavior of Silk Fibroin Reinforced Waterborne Polyurethane

Yongzhen Tao、Anwarul Hasan、George Deeb 等 5 位作者2016-03-21Polymers

Waterborne polyurethane (WPU) is a versatile and environment-friendly material with growing applications in both industry and academia. Silk fibroin (SF) is an attractive material known for its structural, biological and hemocompatible properties. The SF reinforced waterborne polyurethane (WPU) is a promising scaffold…

Electrospun Nanofibers in Biomedical ApplicationsPolymer composites and self-healingSilk-based biomaterials and applications

Microscopic mechanism of the giant magnetocaloric effect in MnCoGe alloys probed by x-ray magnetic circular dichroism

F. Guillou、F. Wilhelm、O. Tegus 等 4 位作者2016-03-21Applied Physics Letters

One important aspect of the magneto-structural transition in MnCoGe-based materials is the reduction in saturation magnetization from the orthorhombic to the hexagonal phase. Here, by combining an element specific magnetization probe such as x-ray magnetic circular dichroism and band structure calculations, we show th…

Magnetic and transport properties of perovskites and related materialsShape Memory Alloy TransformationsMultiferroics and related materials

Macroscopic response and directional disorder dynamics in chemically substituted ferroelectrics

Jacopo Parravicini、E. DelRe、Aharon J. Agranat 等 4 位作者2016-03-21Physical review. B./Physical review. B

Using temperature-resolved dielectric spectroscopy in the range 25--320 K we investigate the macroscopic response, phase symmetry, and order/disorder states in bulk ferroelectric ${\text{K}}_{1\ensuremath{-}y}{\text{Li}}_{y}{\text{Ta}}_{1\ensuremath{-}x}{\text{Nb}}_{x}$ (KLTN). Four long-range symmetry phases are iden…

Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAcoustic Wave Resonator Technologies

Significant Broadband Photocurrent Enhancement by Au-CZTS Core-Shell Nanostructured Photocathodes

Xuemei Zhang、Xu Wu、Anthony Centeno 等 7 位作者2016-03-21Scientific Reports

Copper zinc tin sulfide (CZTS) is a promising material for harvesting solar energy due to its abundance and non-toxicity. However, its poor performance hinders their wide application. In this paper gold (Au) nanoparticles are successfully incorporated into CZTS to form Au@CZTS core-shell nanostructures. The photocatho…

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

Critical questions in development of targeted nanoparticle therapeutics

Richard W. Korsmeyer2016-03-21Regenerative Biomaterials

One of the fourteen Grand Challenges for Engineering articulated by the US National Academy of Engineering is 'Engineer Better Medicines'. Although there are many ways that better medicines could be engineered, one of the most promising ideas is to improve our ability to deliver the therapeutic molecule more precisely…

Nanoparticle-Based Drug DeliveryRNA Interference and Gene DeliveryGraphene and Nanomaterials Applications

Microstructure and thermal conductivity of as-cast and as-extruded binary Mg–Mn alloys

Li Zhong、Jian Peng、Yuankun Sun 等 6 位作者2016-03-21Materials Science and Technology

This study investigated the microstructure and thermal conductivity of as-cast and as-extruded binary Mg–Mn alloys. The large grains and fine α-Mn particles contained in the as-cast alloys were observed. After extrusion, the average grain sizes significantly decreased, typical basal fibre texture was generated and hig…

Magnesium Alloys: Properties and ApplicationsAluminum Alloys Composites PropertiesHydrogen Storage and Materials

Piezoelectricity of Functionalized Graphene: A Quantum-Mechanical Rationalization

Khaled E. El-Kelany、Philippe Carbonnière、Alessandro Erba 等 5 位作者2016-03-21The Journal of Physical Chemistry C

A large out-of-plane piezoelectricity can be induced in graphene by carbon substitution. Several simple substitutions are considered where C atoms are replaced by heavier group-IV elements (Si, Ge, and Sn). A more complex functionalization (namely, pyrrolic N-doped graphene) is also investigated where different functi…

Graphene research and applications2D Materials and ApplicationsThermal properties of materials

Simultaneous Preparation and Dispersion of Regenerated Cellulose Nanoparticles Using a Facile Protocol of Dissolution–Gelation–Isolation–Melt Extrusion

Liang-Qing Zhang、Ben Niu、Shu‐Gui Yang 等 6 位作者2016-03-21ACS Sustainable Chemistry & Engineering

As a consequence of an inter- (or intra-) molecular hydrogen bond, cellulose molecular chains or cellulose nanoparticles have a strong force for aggregation. Therefore, on one hand the broad use of cellulose nanoparticles is stifled by the lack of effective methods for the preparation of them. On the other hand, resea…

Nanocomposite Films for Food PackagingAdvanced Cellulose Research StudiesPolysaccharides and Plant Cell Walls

Nonlinear dielectric spectroscopy in a fragile plastic crystal

M. Michl、Th. S. Bauer、P. Lunkenheimer 等 4 位作者2016-03-21The Journal of Chemical Physics

In this work we provide a thorough examination of the nonlinear dielectric properties of a succinonitrile-glutaronitrile mixture, representing one of the rare examples of a plastic crystal with fragile glassy dynamics. The detected alteration of the complex dielectric permittivity under high fields can be explained co…

Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesPhotochemistry and Electron Transfer Studies

Block Copolymer-Encapsulated CaWO 4 Nanoparticles: Synthesis, Formulation, and Characterization

Jaewon Lee、Nicholas J. Rancilio、Jean M. Poulson 等 4 位作者2016-03-21ACS Applied Materials & Interfaces

We envision that CaWO4 (CWO) nanocrystals have the potential for use in biomedical imaging and therapy because of the unique ways this material interacts with high-energy radiation. These applications, however, require development of nanoparticle (NP) formulations that are suitable for in vivo applications; primarily,…

Bone Tissue Engineering MaterialsLuminescence Properties of Advanced MaterialsNuclear materials and radiation effects

Large enhancement of bulk spin polarization by suppressing CoMn anti-sites in Co2Mn(Ge0.75Ga0.25) Heusler alloy thin film

S. Li、Y. K. Takahashi、Yuya Sakuraba 等 9 位作者2016-03-21Applied Physics Letters

We have investigated the structure and magneto-transport properties of Co2Mn(Ge0.75Ga0.25) (CMGG) Heusler alloy thin films with near-stoichiometric and Mn-rich compositions in order to understand the effect of Co-Mn anti-sites on bulk spin polarization. Anomalous x-ray diffraction measurements using synchrotron radiat…

Magnetic properties of thin filmsMagnetic Properties and ApplicationsHeusler alloys: electronic and magnetic properties