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Thermal Stability and Dispersion Behavior of Nanostructured CexZr1−xO2 Mixed Oxides over Anatase-TiO2: A Combined Study of CO Oxidation and Characterization by XRD, XPS, TPR, HREM, and UV−Vis DRS

Benjaram M. Reddy、Pankaj Bharali、Pranjal Saikia 等 6 位作者2008-11-21Industrial & Engineering Chemistry Research

A study has been undertaken on the thermal stability and dispersion behavior of nanostructured Ce x Zr 1− x O 2 mixed oxides over anatase-TiO 2 support, synthesized by a deposition coprecipitation method and subjected to heat treatments at different temperatures. An unsupported Ce x Zr 1− x O 2 mixed oxide was also sy…

Advanced Photocatalysis TechniquesCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions

Protein fluctuations explored by inelastic neutron scattering and dielectric relaxation spectroscopy

Guangye Chen、Paul W. Fenimore、Hans Frauenfelder 等 6 位作者2008-11-21The Philosophical Magazine A Journal of Theoretical Experimental and Applied Physics

Glasses, supercooled liquids and proteins share common properties, in particular the existence of an energy landscape and the presence of two types of fluctuations, α and β. While the effect of α fluctuations on proteins has been known for a few years, the effect of β fluctuations has not been fully understood. By com…

Protein Structure and DynamicsMaterial Dynamics and PropertiesNMR spectroscopy and applications

Nanopatterning of Transition Metal Surfaces via Electrochemical Dimple Array Formation

Sherdeep Singh、Warren R. T. Barden、Peter Kruse2008-11-21ACS Nano

Nanoscale surface patterning is of great importance for applications ranging from catalysts to biomaterials. We show the formation of ordered nanoscale dimple arrays on titanium, tungsten, and zirconium during electropolishing, demonstrating versatility of a process previously only reported for tantalum. This is a rar…

Nanofabrication and Lithography TechniquesAnodic Oxide Films and NanostructuresNanoporous metals and alloys

Modelling of dynamic hysteresis loops using the Jiles–Atherton approach

Krzysztof Chwastek2008-11-21Mathematical and Computer Modelling of Dynamical Systems

The article deals with the modelling of dynamic hysteresis loops. The modelling is carried out within the framework proposed by D. Jiles and D. Atherton. The dynamic effect of eddy currents is taken into account using G. Bertotti's approach. A satisfactory agreement between the measured and the modelled dynamic hyster…

Microstructure and Mechanical Properties of SteelsMagnetic Properties and ApplicationsNon-Destructive Testing Techniques

Single-Ion Anisotropy and Exchange Interactions in the Cyano-Bridged Trimers MnIII2MIII(CN)6 (MIII = Co, Cr, Fe) Species Incorporating [Mn(5-Brsalen)]+ Units: An Inelastic Neutron Scattering and Magnetic Susceptibility Study

Philip L. W. Tregenna‐Piggott、Denis Sheptyakov、L. Keller 等 12 位作者2008-11-21Inorganic Chemistry

The electronic structures of the compounds K[(5-Brsalen)(2)(H(2)O)(2)-Mn(2)M(III)(CN)(6)].2H(2)O (M(III) = Co(III), Cr(III), Fe(III)) have been determined by inelastic neutron scattering (INS) and magnetic susceptibility studies, revealing the manganese(III) single-ion anisotropy and exchange interactions that define…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesAdvanced NMR Techniques and Applications

Terahertz Time-Domain Spectroscopic Analysis of Molecular Behavior in Polyamide Nanocomposites

Yoshimichi Ohki、Masahide Okada、Norikazu Fuse 等 6 位作者2008-11-21Applied Physics Express

A terahertz time-domain spectroscopic study was carried out as an effective measure to analyze the mechanism that induces superior properties in polyamide-6 nanocomposites. The peak frequency of dielectric loss appearing at about 3.0 THz shifts to a lower frequency by the presence of clay nanofillers, while it is inde…

High voltage insulation and dielectric phenomenaGlass properties and applicationsSmart Materials for Construction

Core–Shell PbI2@WS2 Inorganic Nanotubes from Capillary Wetting

Ronen Kreizman、Sung You Hong、Jeremy Sloan 等 10 位作者2008-11-21Angewandte Chemie International Edition

Multiwall WS(2) nanotube templates were used as hosts to prepare core-shell PbI(2)@WS(2) nanotubes by a capillary-wetting method. Conformal growth of PbI(2) layers on the inner wall of the relatively wide WS(2) nanotubes (i.d. ca. 10 nm) leads to nanotubular structures which were not previously observed in narrow carb…

2D Materials and ApplicationsAdvanced Thermoelectric Materials and DevicesMXene and MAX Phase Materials

Synthesis of Fluorescent Chitosan and Its Application in Noncovalent Functionalization of Carbon Nanotubes

Qiang Yang、Li Shuai、Xuejun Pan2008-11-21Biomacromolecules

ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTSynthesis of Fluorescent Chitosan and Its Application in Noncovalent Functionalization of Carbon NanotubesQiang Yang, Li Shuai, and Xuejun Pan*View Author Information Department of Biological Systems Engineering, University of Wisconsin-Madison, 460 Henry Mall, Madison, Wiscons…

Carbon Nanotubes in CompositesConducting polymers and applicationsGraphene and Nanomaterials Applications

Temperature Dependence of Sol‐Gel Conversion Kinetics in Gelatin‐Water System

Kai Chen、Sergey Vyazovkin2008-11-21Macromolecular Bioscience

The conversion kinetics of an aqueous gelatin solution to gel was studied by temperature modulated and regular DSC under isothermal and continuous cooling conditions. Isothermal runs revealed a decrease in the quasi-static heat capacity primarily associated with syneresis (phase separation) of the gel. Above 19 degree…

Microencapsulation and Drying ProcessesCollagen: Extraction and CharacterizationThermal and Kinetic Analysis

Preparation and Magnetic Properties of Iron(3+) Spin-Crossover Complexes Bearing a Thiophene Substituent: Toward Multifunctional Metallopolymers

Brandon Djukic、Paul A. Dube、F. S. Razavi 等 7 位作者2008-11-21Inorganic Chemistry

The synthesis of a new 3-ethynylthienyl-substituted QsalH ligand (QsalH is the short form for N-(8-quinolyl)salicylaldimine) (ThEQsalH 3), and the preparation, electronic, and magnetic properties of three homoleptic and cationic iron(3+) complexes containing this ligand with PF(6)(-) 4, SCN(-) 5, and ClO(4)(-) 6 count…

Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryOrganic and Molecular Conductors Research

Evidence for Lattice Effects at the Charge-Ordering Transition in(TMTTF)2X

M De Souza、P. Foury-Leylekian、A. Moradpour 等 5 位作者2008-11-21Physical Review Letters

High-resolution thermal expansion measurements have been performed for exploring the mysterious "structureless transition" in (TMTTF)2X (X=PF(6) and AsF6), where charge ordering at T(CO) coincides with the onset of ferroelectric order. Particularly distinct lattice effects are found at T(CO) in the uniaxial expansivit…

Organic and Molecular Conductors ResearchSolid-state spectroscopy and crystallographyInorganic Fluorides and Related Compounds

Transparent Nd:YAG Ceramics Fabricated Using Nanosized γ‐Alumina and Yttria Powders

Xiaodong Li、Ji‐Guang Li、Zhimeng Xiu 等 5 位作者2008-11-21Journal of the American Ceramic Society

Neodymium (Nd):Y 3 Al 5 O 12 (YAG) ceramics of excellent transparency have been fabricated by solid‐reactive sintering, using nanosized γ‐Al 2 O 3 and Y 2 O 3 powders as the starting materials. Reaction sequences and sintering behaviors of the powder mixture were characterized by X‐ray diffractometry and dilatometry.…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsSolid State Laser Technologies

Micro‐Raman scattering spectroscopy study of Li‐doped and undoped ZnO needle crystals

R. Jothilakshmi、V. Ramakrishnan、R. Thangavel 等 6 位作者2008-11-21Journal of Raman Spectroscopy

Abstract ZnO nanostructures have attracted great attention for possible applications in optoelectronic and spintronic devices. The electrical resistivity because of carriers can be improved by the introduction of Li ions, as Li is a possible dopant for achieving p‐type ZnO. We have carried out a comprehensive micro‐Ra…

ZnO doping and propertiesGas Sensing Nanomaterials and SensorsCopper-based nanomaterials and applications

Optical spectra of Si nanocrystallites: Bethe-Salpeter approach versus time-dependent density-functional theory

L. E. Ramos、Joachim Paier、Georg Kresse 等 4 位作者2008-11-21Physical Review B

Two state-of-the-art approaches based on the quasiparticle-Bethe-Salpeter equation (QP-BSE) and time-dependent density-functional theory (TDDFT) for different functionals are applied to calculate optical-absorption spectra of Si nanocrystallites passivated with hydrogen. All-electron wave functions are generated withi…

Quantum Dots Synthesis And PropertiesGlass properties and applicationsSilicon Nanostructures and Photoluminescence

Flame‐retardant and mechanical properties of high‐density rigid polyurethane foams filled with decabrominated dipheny ethane and expandable graphite

Ling Ye、Xian‐Yan Meng、Xing‐Mao Liu 等 5 位作者2008-11-21Journal of Applied Polymer Science

Abstract The article reported the flame‐retardant and the mechanical properties of expandable graphite (EG), an intumescent type, and decabrominated dipheny ethane (DBDPE), a gas‐phase type of flame‐retardant‐containing high‐density rigid polyurethane foams (RPUF) with a constant density of 0.5g/cm 3 . The results ind…

Polymer composites and self-healingFire dynamics and safety researchFlame retardant materials and properties

Controlled Synthesis and Biocompatibility of Water-Soluble ZnO Nanorods/Au Nanocomposites with Tunable UV and Visible Emission Intensity

Weiqing Zhang、Yang Lü、Tie-Kai Zhang 等 6 位作者2008-11-21The Journal of Physical Chemistry C

ZnO nanorods/Au nanocomposites with Au nanocrystals growing at tips of ZnO nanorods or located along the surface of the nanorods can be synthesized via a facile low-cost solution method. The number of Au nanoparticles grown on ZnO nanorods can be controlled by tuning the molar ratio of ZnO to HAuCl 4; thus, the ZnO/Au…

ZnO doping and propertiesQuantum Dots Synthesis And PropertiesAdvanced Nanomaterials in Catalysis

A review on ternary immiscible polymer blends: morphology and effective parameters

Shirin Shokoohi、Ahmad Arefazar2008-11-21Polymers for Advanced Technologies

Abstract In this paper a review of studies on ternary polymer blends, reported in the period from 1980s to 2007, is presented. This review covers the investigations carried out on the formation of morphologies observed in ternary blends including separated disperse, core–shell and co‐continuous morphologies; and also…

Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesRheology and Fluid Dynamics Studies

Interplay between valley polarization and electron-electron interaction in a graphene ring

David Abergel、Vadim M. Apalkov、Tapash Chakraborty2008-11-21Physical Review B

We have studied the interplay of valley polarization and the Coulomb interaction on the energy spectrum, persistent current, and optical absorption of a graphene quantum ring. We show that the interaction has a dramatic effect on the nature of the ground state as a function of the magnetic flux and that the absence of…

Quantum Information and CryptographyGraphene research and applicationsQuantum and electron transport phenomena

Chitosan tailor‐made films: the effects of additives on barrier and mechanical properties

Cristiana Maria Pedroso Yoshida、Ênio Nazaré de Oliveira、Telma Teixeira Franco2008-11-21Packaging Technology and Science

Abstract With the aim of achieving ‘tailor‐made’ chitosan films, the effects of several variables on the properties of chitosan films were studied. These variables were chitosan concentration and molecular weight of thermally depolymerized chitosan, addition of lipids (palmitic acid, beeswax or carnauba wax) and plast…

Advanced Sensor and Energy Harvesting MaterialsNanocomposite Films for Food PackagingElectrospun Nanofibers in Biomedical Applications

Gold-Coated Nanorod Arrays as Highly Sensitive Substrates for Surface-Enhanced Raman Spectroscopy

J.-G. Fan、Yiping Zhao2008-11-21Langmuir

Substrates for surface-enhanced Raman spectroscopy (SERS) have suffered from low enhancement, short shelf time, and poor uniformity or reproducibility. We report an effective method to produce SERS substrates that can potentially overcome these shortcomings. The SERS substrate consists of a layer of 100 nm Ag film dep…

Gold and Silver Nanoparticles Synthesis and ApplicationsSpectroscopy Techniques in Biomedical and Chemical ResearchLaser-induced spectroscopy and plasma