Piotr Kowalczyk、Mietek Jaroniec、Artur P. Terzyk 等 5 位作者2005-01-26Langmuir
In this work, we propose an improvement of the classical Derjaguin-Broekhoff-de Boer (DBdB) theory for capillary condensation/evaporation in mesoporous systems. The primary idea of this improvement is to employ the Gibbs-Tolman-Koenig-Buff equation to predict the surface tension changes in mesopores. In addition, the…
Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisCatalysis and Oxidation Reactions
Fábio C. Fonseca、André S. Ferlauto、F. Álvarez 等 5 位作者2005-01-26Journal of Applied Physics
Carbon–nickel nanocomposite thin films were prepared by ion beam cosputtering a graphite target having a nickel chip attached to its surface. The amount of Ni incorporated in the films was controlled by the size of the Ni chip (from 5to22wt%), and measured by in situ x-ray photoelectron spectroscopy (XPS). High-resolu…
Magnetic properties of thin filmsDiamond and Carbon-based Materials ResearchTransition Metal Oxide Nanomaterials
Manwar Hussain、R. Varely、Yi‐Bing Cheng 等 5 位作者2005-01-26Journal of Applied Polymer Science
Abstract Inorganic geopolymer potassium aluminosilicate was prepared at room temperature by the reaction of kaolin, potassium silicate, and potassium hydroxide solution and was dispersed in situ into an epoxy matrix by various proportions to fabricate novel inorganic–organic hybrid geopolymer composites. The formation…
Polymer Nanocomposites and PropertiesFlame retardant materials and propertiesSynthesis and properties of polymers
Maziar Marandi、Nima Taghavinia、Azam Iraji zad 等 4 位作者2005-01-26Nanotechnology
The optical and electrical properties of semiconductor nanoparticles are strongly dependent on their size. A flexible control of the size of the nanoparticles is of interest for tuning their properties for different applications. Here we use a coupled method to control the size of CdS nanoparticles. The method involve…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications
P. M. Derlet、S. Van Petegem、H. Van Swygenhoven2005-01-26Physical Review B
The calculation of two-theta x-ray diffraction profiles for multimillion atom computer generated nanocrystalline (nc) $\mathrm{Ni}$ systems is presented. Peak profile analysis is performed using a standard Williamson-Hall analysis. The derived mean grain size and root-mean-square inhomogeneous strain quantities are co…
Microstructure and mechanical propertiesBoron and Carbon Nanomaterials ResearchX-ray Diffraction in Crystallography
Gang Xiong、K. B. Üçer、R. T. Williams 等 7 位作者2005-01-26Journal of Applied Physics
Donor-acceptor-pair (DAP) luminescence is a direct probe of the acceptors in ZnO. We report the near-surface doping of a ZnO single crystal by ion implantation with nitrogen and titanium. Secondary-ion-mass spectroscopy shows that the doping depth is approximately 80nm (N) and 50nm (Ti). The DAP photoluminescence cent…
ZnO doping and propertiesLuminescence Properties of Advanced MaterialsPerovskite Materials and Applications
F.J. Lahoz、Inocencio R. Martín、J. M. Calvilla-Quintero2005-01-26Applied Physics Letters
Ho3+-doped fluoride nanophase glass ceramics have been synthesized from silica-based oxyfluoride glass. An intense white emission light is observed by the naked eye under near infrared excitation at 750nm. This visible upconversion is due to three strong emission bands in the primary color components, red, green, and…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsSolid State Laser Technologies
Rong He、Rupali R. Davda、James A. Dumesic2005-01-26The Journal of Physical Chemistry B
Reaction kinetics measurements of the water-gas shift reaction were carried out at 373 K on Pt/Al2O3 in vapor phase to investigate the effects of CO, H2, and H2O partial pressures. Results of in situ ATR-IR studies conducted in vapor phase under similar conditions suggest that the Pt surface coverage by adsorbed CO is…
Catalytic Processes in Materials ScienceCatalysts for Methane ReformingCatalysis and Oxidation Reactions
Christian Stiewe、Luca Bertini、Muhammet S. Toprak 等 11 位作者2005-01-26Journal of Applied Physics
The properties of Te-doped Co(Sb1−yTey)3 and Te-Ni double-doped Co1−xNix(Sb1−yTey)3 nanostructured skutterudites were evaluated by means of x-ray powder diffraction, and transport properties measured on the synthesized samples have been compared with ab initio theoretical modeling. Theoretical optimal dopant contents…
Advanced Thermoelectric Materials and DevicesChalcogenide Semiconductor Thin Films
Alain Walcarius2005-01-26Comptes Rendus Chimie
An overview is presented dealing with the intersection between the chemistry of ordered mesoporous silica (MPS)-based materials and electrochemistry. After a brief discussion on the interest of these materials for the electrochemists community, the various strategies applied to confine such insulating solids at an ele…
Electrochemical sensors and biosensorsMesoporous Materials and CatalysisAnalytical Chemistry and Sensors
Abil E. Aliev2005-01-26Biopolymers
Historical collagen-based parchments have been studied by solid-state NMR. In addition, new parchment (produced according to traditional methods) and gelatin from bovine skin were also studied. Wideline 1H and MAS 13C measurements were carried out directly on intact parchments. A simple approach is proposed for evalua…
Enzyme Structure and FunctionCultural Heritage Materials AnalysisCollagen: Extraction and Characterization
Johan Hjelm、Robyn W. Handel、Anders Hagfeldt 等 6 位作者2005-01-26Inorganic Chemistry
The electropolymerization of a series of Ru and Os bis-terpyridine complexes that form rodlike polymers with bithienyl, quaterthienyl, or hexathienyl bridges has been studied. Absorption spectroscopy, scanning electron microscopy, and cyclic voltammetry have been used to characterize the monomers and resulting polymer…
Organic Electronics and PhotovoltaicsConducting polymers and applicationsElectrochemical Analysis and Applications
M. P. de Jong、I. Bergenti、V. Dediu 等 6 位作者2005-01-26Physical Review B
We present a detailed investigation of the valence of manganese sites at the surface of colossal magnetoresistance ${\mathrm{La}}_{0.7}{\mathrm{Sr}}_{0.3}\mathrm{Mn}{\mathrm{O}}_{3}$ (LSMO) thin films by x-ray absorption spectroscopy (XAS). The XAS Mn $L$-edge spectra of epitaxial LSMO films usually show a peak or sho…
Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics
Soohaeng Yoo、Xiao Cheng Zeng2005-01-26Angewandte Chemie International Edition
Generic structural motif: Small to medium-sized, energetically low-lying silicon clusters Sin (11<n<30) are generally prolate in shape. Starting from Si16, DFT calculations show that silicon clusters are most likely built on a generic structural motif consisting of an Si6 sixfold puckered ring subunit (dark green) and…
Quantum Dots Synthesis And PropertiesSilicon Nanostructures and PhotoluminescenceSemiconductor materials and interfaces
Andro Chanishvili、G. S. Chilaya、Gia Petriashvili 等 10 位作者2005-01-26Applied 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 Andro Chanishvili, Guram Chilaya, Gia Petriashvili, Riccardo Barberi, Roberto Bartolino, Gabriell…
Liquid Crystal Research AdvancementsPlant and animal studiesPhotonic Crystals and Applications
Amandeep K. Sra、Trevor Ewers、Raymond E. Schaak2005-01-26Chemistry of Materials
A modified polyol process has been used to synthesize intermetallic nanocrystals and nanowire networks directly in solution using a one-pot reaction. The synthesis of AuCu nanocrystals in tetraethylene glycol shows that atomically ordered intermetallic nanocrystals form above 250 °C, while atomically disordered alloy…
Quantum Dots Synthesis And PropertiesCopper-based nanomaterials and applicationsNanomaterials for catalytic reactions
Jeffrey L. Blackburn、Donald C. Selmarten、Randy J. Ellingson 等 6 位作者2005-01-26The Journal of Physical Chemistry B
Electron- and hole-transfer reactions are studied in colloidal InP quantum dots (QDs). Photoluminescence quenching and time-resolved transient absorption (TA) measurements are utilized to examine hole transfer from photoexcited InP QDs to the hole acceptor N,N,N',N'-tetramethyl-p-phenylenediamine (TMPD) and electron t…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsSilicon Nanostructures and Photoluminescence
Steven R. Lustig、Anand Jagota、Constantine Y. Khripin 等 4 位作者2005-01-26The Journal of Physical Chemistry B
Single-stranded DNA wrap helically around individual single-walled carbon nanotubes to form DNA/CNT hybrids, which are both stable and dispersible in aqueous solution. Subjected to ion-exchange chromatography, a hybrid elutes at an ionic strength that depends on the electronic character and diameter of the core nanotu…
Carbon Nanotubes in CompositesGraphene research and applicationsNanopore and Nanochannel Transport Studies
Jingbiao Cui、Charles P. Daghlian、Ursula J. Gibson 等 6 位作者2005-01-26Journal of Applied Physics
Structural, optical, and field-emission properties of ZnO nanowire arrays grown at 90°C are investigated. Single-crystalline ZnO nanowires with low level of oxygen vacancies are obtained at low temperatures. The nanowire growth is strongly dependent on the seeding method used but independent of the substrate materials…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsGa2O3 and related materials
Cínthia Piamonteze、Frank M. F. de Groot、H. Tolentino 等 7 位作者2005-01-26Physical Review B
We report on a Ni ${L}_{2,3}$ edge x-ray absorption spectroscopy study in $R\mathrm{Ni}{\mathrm{O}}_{3}$ perovskites. These compounds exhibit a metal-to-insulator (MI) transition as temperature decreases. The ${L}_{3}$ edge presents a clear splitting in the insulating state, associated to a less hybridized ground stat…
Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsElectronic and Structural Properties of Oxides