Stéphanie Pasche、Marcus Textor、Laurence Meagher 等 5 位作者2005-06-09Langmuir
Adsorbed layers of "comb-type" copolymers consisting of PEG chains grafted onto a poly(l-lysine) (PLL) backbone on niobium oxide substrates were studied by colloid-probe AFM in order to characterize the interfacial forces associated with coatings of varying architectures (PEG/PLL ratios and PEG chain lengths) and thei…
Molecular Junctions and NanostructuresPolymer Surface Interaction StudiesForce Microscopy Techniques and Applications
J. J. Mortensen、K. Kaasbjerg、S. L. Frederiksen 等 6 位作者2005-06-09arXiv
We present a practical scheme for performing error estimates for Density Functional Theory calculations. The approach which is based on ideas from Bayesian statistics involves creating an ensemble of exchange-correlation functionals by comparing with an experimental database of binding energies for molecules and solid…
Materials Science
Francisco J. Vidal‐Iglesias、José Solla‐Gullón、Vicente Montiel 等 5 位作者2005-06-09The Journal of Physical Chemistry B
The oxidation of ammonia on platinum surfaces is a structure sensitive reaction that takes place almost exclusively on Pt(100) sites. This report shows how dependent the activity is on different arrangements of (100) sites of platinum. The effect of two-dimensional domains has been addressed by using stepped surfaces…
Ammonia Synthesis and Nitrogen ReductionCatalytic Processes in Materials ScienceAdvanced Chemical Physics Studies
Takatoshi Hashimoto、Takeshi Nishimatsu、Hiroshi Mizuseki 等 6 位作者2005-06-09arXiv
Valley lines on total-energy surfaces for the zone-center distortions of free-standing and in-plane strained SrTiO3 are investigated with a newly developed first-principles structure optimization technique [Jpn. J. Appl. Phys. vol.43 (2004), p.6785]. The results of numerical calculations confirmed that the ferroelectr…
Materials Science
Masanobu Iwanaga2005-06-09arXiv
Photoacoustic (PA) wave has been examined in a superconductor of the first kind, Pb single crystal. The PA wave is induced by optical excitation of electronic state and propagates from normal into superconductive phases below T$_{\rm C}$. It is clearly shown by wavelet analysis that the measured PA wave includes two d…
Materials Science
Shigenobu Ogata、Ju Li、Sidney Yip2005-06-09Physical Review B
Energy landscapes of $(2\overline{1}\overline{1})⟨111⟩$ deformation twinning in bcc Mo and $(111)⟨11\overline{2}⟩$ deformation twinning in fcc Al and Cu are determined using density functional theory for sliding of layers numbering up to 7. In bcc Mo, the minimum thickness of a metastable twin is two layers, while twi…
Microstructure and mechanical propertiesMagnesium Alloys: Properties and ApplicationsMetal and Thin Film Mechanics
Linfeng Gou、Catherine J. Murphy2005-06-09OpenAlex
Gold nanorods prepared by a seed-mediated growth approach use ∼4-nm gold nanospheres as the seeds and subsequent reduction of metal salt with a weak reducing agent (ascorbic acid) in the presence of a directing surfactant to produce nanorods. If insufficient ascorbic acid is added in the growth step, then metal salt r…
Quantum Dots Synthesis And PropertiesNanocluster Synthesis and ApplicationsGold and Silver Nanoparticles Synthesis and Applications
Timothy F. Scott、Andrew D. Schneider、Wayne D. Cook 等 4 位作者2005-06-09OpenAlex
Chemically cross-linked polymers are inherently limited by stresses that are introduced by post-gelation volume changes during polymerization. It is also difficult to change a cross-linked polymer's shape without a corresponding loss of material properties or substantial stress development. We demonstrate a cross-link…
Polymer composites and self-healingAdvanced Polymer Synthesis and CharacterizationPhotopolymerization techniques and applications
Somsaluay Suwanprasop、A. Eftaxias、Frank Stüber 等 6 位作者2005-06-08Industrial & Engineering Chemistry Research
The wet air oxidation of phenol over a commercial active carbon catalyst has been studied in laboratory-scale and pilot-plant fixed-bed reactors at mild temperatures and oxygen partial pressures of 120−160 °C and 0.05−0.2 MPa, respectively. The performances of the fixed-bed reactors have been assessed and compared to…
Catalytic Processes in Materials ScienceOdor and Emission Control TechnologiesIndustrial Gas Emission Control
Haixia Shang、Tanguy Rouxel2005-06-08Journal of the American Ceramic Society
The loading time and temperature dependences viscoelastic behavior of a soda‐lime‐silicate glass (SLS) were studied by indentation creep experiments. Experiments were conducted in air, water and silicone oil with 15–10 000 s loading times, and temperatures ranging between 100 and 500 K. The indentation size was found…
Glass properties and applicationsAdvanced ceramic materials synthesisBuilding materials and conservation
Yu-Chung Chang、Chih‐Cheng Chou、Jiang‐Jen Lin2005-06-08Langmuir
Layered silicates were intercalated with comb-branched copolymers consisting of a hydrophobic polystyrene-b-poly(ethylene/butylene)-b-polystyrene (SEBS) backbone and multiple pendants of poly(oxyalkylene) (POA) quaternary ammonium salts. The requisite intercalating agents were synthesized by grafting POA amines on the…
Mesoporous Materials and CatalysisPolymer Nanocomposites and PropertiesConducting polymers and applications
W. Głaz、T. Bancewicz、Jean-Luc Godet2005-06-08The Journal of Chemical Physics
Binary collision-induced hyper-Rayleigh (CIHR) spectra of Kr-Xe gaseous system are computed quantum mechanically and classically within the frequency range up to 380 cm(-1). The intensities are expressed in absolute units. The details of the theory developed for the CIHR spectra are given and the properties of the pro…
Solid-state spectroscopy and crystallographyHigh-pressure geophysics and materialsNonlinear Optical Materials Research
Masashi Nakamura、Maiko Tanaka、Makoto Ito 等 4 位作者2005-06-08The Journal of Chemical Physics
The adsorption of water molecules on an oxygen-predosed p(2x2)-Ni(111)-O surface was studied by surface x-ray diffraction and infrared reflection absorption spectroscopy (IRAS) at temperature of 25 and 140 K. Precise structures including adsorbed water, predosed oxygen, and substrate nickel atoms at these two temperat…
Iron oxide chemistry and applicationsChemical and Physical Properties of MaterialsCopper-based nanomaterials and applications
Yeau‐Ren Jeng、Ping-Chi Tsai、Te‐Hua Fang2005-06-08The Journal of Chemical Physics
This paper utilizes molecular-dynamics simulations to investigate the mechanical characteristics of a suspended (10, 10) single-walled carbon nanotube (SWCNT) during atomic force microscopy (AFM) nanoindentation at different temperatures. Spontaneous topological transition of the Stone-Wales (SW) defects is clearly ob…
Carbon Nanotubes in CompositesForce Microscopy Techniques and ApplicationsDiamond and Carbon-based Materials Research
Cecily Tsz Lui、Mark J. MacLachlan2005-06-08Angewandte Chemie
Fluoreszenzschalter: Fluoreszente Multimetall-Makrocyclen lagern sich beim Wechsel des Lösungsmittels von THF zu CH2Cl2 zu supramolekularen Aggregaten zusammen. Koordinierende Basen (z. B. Pyridin) brechen diese Aggregate auf und steigern die Fluoreszenz deutlich (siehe schematische Darstellung der Organisation der Ma…
Metal-Organic Frameworks: Synthesis and ApplicationsSupramolecular Self-Assembly in MaterialsSupramolecular Chemistry and Complexes
Sharif Ahmad、S. M. Ashraf、Ufana Riaz2005-06-08Polymers for Advanced Technologies
Abstract Advancements in the area of conducting polymers have been towards their application as effective corrosion protective coatings to replace the use of heavy metals as additives in the coatings industries, which are now considered to be an environmental as well as health hazard. With the aim to utilize a sustain…
Conducting polymers and applicationsAdvanced Sensor and Energy Harvesting MaterialsAnalytical Chemistry and Sensors
Natalia V. Skorodumova、Adam Jönsson、M. Herranen 等 7 位作者2005-06-08Applied Physics Letters
The experimental investigation of the cubic δ-Bi2O3 phase grown on a (110) Au substrate at low temperature has disclosed a chaotic character of the conductivity at low voltage and temperature. Based on first-principles calculations, we show that the conductivity of this oxide strongly depends on the distribution of ox…
Electronic and Structural Properties of OxidesAdvancements in Solid Oxide Fuel CellsCatalysis and Oxidation Reactions
Thomas Blochowicz、E. A. Rössler2005-06-08The Journal of Chemical Physics
Binary mixtures of the molecular glass former 2-picoline in oligostyrene, in which the dielectric response of 2-picoline exhibits a particularly broad distribution of correlation times, are investigated by nonresonant dielectric hole-burning (NDHB) spectroscopy and the results are compared with NDHB in neat systems, i…
Photochemistry and Electron Transfer StudiesThermodynamic properties of mixturesMaterial Dynamics and Properties
Young‐Chul Song、Doo-Hyun Choi2005-06-08Electronics Letters
The results of using the high-frequency components of the leakage current to study aging of contaminated insulators under salt fog conditions. Experimental results demonstrate that the high-frequency components can be used effectively to study aging of polymer insulators in a salt fog test.
Electrical Fault Detection and ProtectionPower Transformer Diagnostics and InsulationHigh voltage insulation and dielectric phenomena
Martin Schmücker、Hartmut Schneider、Kenneth J.D. MacKenzie 等 5 位作者2005-06-08Journal of the American Ceramic Society
The order–disorder of the tetrahedrally coordinated aluminum and silicon atoms in mullite has been investigated by means of 29 Si nuclear magnetic resonance (NMR) spectroscopy. Sinter (3/2) and fused (2/1) mullites in the as‐received state and reheated at 1750°C, and a reference sillimanite were used for this study. A…
Nuclear materials and radiation effectsBoron and Carbon Nanomaterials ResearchAdvanced ceramic materials synthesis