B. Kulicka、Vasyl Kinzhybalo、R. Jakubas 等 6 位作者2006-05-19Journal of Physics Condensed Matter
The crystal structure of 4-aminopyridinium tetrachlorobismuthate(III), [4-NH 2 PyH ][BiCl 4 ], has been determined at 100 and 260 K by the x-ray diffraction method as monoclinic space group, P 2 1 / c and C 2/ c , respectively. Differential scanning calorimetry and dilatometry reveal one perfectly reversible discontin…
Crystal structures of chemical compoundsNonlinear Optical Materials ResearchSolid-state spectroscopy and crystallography
J W Connor、R. J. Hastie、P. Helander2006-05-19Plasma Physics and Controlled Fusion
The stability of the trapped electron mode is studied in conditions characteristic of internal transport barriers, namely steep density and temperature gradients. An analytic model allows a unified treatment of all collisionality regimes, from the dissipative limit to the weakly collisional regime (when the velocity s…
Quantum and electron transport phenomenaDiamond and Carbon-based Materials ResearchAtomic and Subatomic Physics Research
Zhi‐Hong Liu、Lianqing Li2006-05-19Crystal Growth & Design
The new hydrated cesium borate Cs 2 B 7 O 9 (OH) 5 containing the first example of an isolated heptaborate anion was synthesized by the reaction of H 3 BO 3 with Cs 2 CO 3 at 170 °C. Its crystal structure was determined from single-crystal X-ray diffraction data and further characterized by FT-IR and DTA-TG. It crysta…
Crystal Structures and PropertiesChemical Synthesis and CharacterizationX-ray Diffraction in Crystallography
R. L. C. Vink、Kurt Binder、Jürgen Horbach2006-05-19Physical Review E
We investigate the influence of confinement on phase separation in colloid-polymer mixtures. To describe the particle interactions, the colloid-polymer model of Asakura and Oosawa [J. Chem. Phys. 22, 1255 (1954)] is used. Grand canonical Monte Carlo simulations are then applied to this model confined between two paral…
Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesTheoretical and Computational Physics
Jean-François Guery、Emmanuel Bertrand、Catherine Rouzeau 等 6 位作者2006-05-19Physical Review Letters
We have studied the effect of shear on the stability of suspensions made of non-Brownian solid particles. We demonstrate the existence of an irreversible transition where the solid particles aggregate at remarkably low volume fractions (phi approximately 0.1). This shear-induced aggregation is dramatic and exhibits a…
Material Dynamics and PropertiesMicro and Nano RoboticsPickering emulsions and particle stabilization
M C K Wiltshire、Emanuele Galiffi、Joseph V. Hajnal2006-05-19Journal of Physics Condensed Matter
A slab of material with a negative permeability can act as a super-lens for magnetic fields and generate images with a sub-wavelength resolution. We have constructed an effective medium using a metamaterial with negative permeability in the region of 24 MHz, and used this to form images in free space of radio frequenc…
Metamaterials and Metasurfaces ApplicationsElectromagnetic Scattering and AnalysisAdvanced Antenna and Metasurface Technologies
Jesús Graciani、Jaime Oviedo、Javier Fdez. Sanz2006-05-19The Journal of Physical Chemistry B
The catalytic properties toward CO combustion of an encapsulated cluster, V@Au12-, have been explored by means of plane-wave pseudopotential density-functional theory calculations. Single adsorption of both O2 and CO as well as coadsorption have been considered. The adsorption energy for the O2 molecule is about 0.3-0…
Catalytic Processes in Materials ScienceNanocluster Synthesis and ApplicationsLaser-Ablation Synthesis of Nanoparticles
Hyeong-Jin Kim、Chul‐Ho Lee、Dongwook Kim 等 4 位作者2006-05-19Nanotechnology
We fabricated dual-gate ZnO nanorod metal–oxide semiconductor field-effect transistors (MOSFETs) where a Si substrate with a 200 nm thick SiO 2 layer was used as a bottom-gate and a Au electrode with a 100 nm thick SiO 2 layer was used as a top-gate. From current–voltage characteristic curves of the nanorod MOSFETs, t…
ZnO doping and propertiesSemiconductor materials and devicesElectronic and Structural Properties of Oxides
Moonsub Shim、Taner Ozel、Anshu Gaur 等 4 位作者2006-05-19Journal of the American Chemical Society
Doping of individual single-walled carbon nanotubes via noncovalent adsorption of polyethylenimine which converts p-type semiconducting nanotubes into n-type is examined by micro-Raman studies. Distinctively different responses are observed in metallic and in semiconducting nanotubes. Very little or no changes in the…
Carbon Nanotubes in CompositesMechanical and Optical ResonatorsNanopore and Nanochannel Transport Studies
R. Feyerherm、E. Dudzik、N. Aliouane 等 4 位作者2006-05-19Physical Review B
Synchrotron x-ray diffraction and resonant magnetic scattering experiments on a single crystal of orthorhombic ${\mathrm{DyMnO}}_{3}$ have been carried out between 4 and $40\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. Below ${T}_{N}^{\mathrm{Dy}}=5\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, the Dy magnetic moments order in a c…
Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsMultiferroics and related materials
Andrea Cavallaro、F. Sandiumenge、Jaume Gàzquez 等 7 位作者2006-05-19Advanced Functional Materials
Abstract The evolution from a partially oriented granular microstructure to a dense epitaxial one in CeO 2 films deposited from chemical solutions on Y 2 O 3 ‐stabilized cubic ZrO 2 (YSZ) has been investigated using cross‐section transmission electron microscopy (XTEM), electron energy‐loss spectroscopy (EELS), X‐ray…
Catalytic Processes in Materials ScienceAdvancements in Solid Oxide Fuel CellsAdvanced Condensed Matter Physics
Fulvio Bisi、Epifanio G. Virga、Eugene C Gartland 等 6 位作者2006-05-19Physical Review E
We study a class of quadratic Hamiltonians which describe both fully attractive and partly repulsive molecular interactions, characteristic of biaxial liquid crystal molecules. To treat the partly repulsive interactions we establish a minimax principle for the associated mean-field free energy. We show that the phase…
Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesMolecular spectroscopy and chirality
Parambath Anilkumar、M. Jayakannan2006-05-19Langmuir
We demonstrate here, for the first time, a unique strategy for conducting polyaniline nanofibers based on renewable resources. Naturally available cardanol, which is an industrial waste and main pollutant from the cashew nut industry, is utilized for producing well-defined polyaniline nanofibers. A new amphiphilic mol…
Electrochemical sensors and biosensorsAdvanced Sensor and Energy Harvesting MaterialsConducting polymers and applications
Zhibao Li、George P. Demopoulos2006-05-19Industrial & Engineering Chemistry Research
Phase-transition diagrams of three CaSO 4 phases, namely, dihydrate, hemihydrate, and anhydrate, in the HCl−CaCl 2 −H 2 O system are successfully constructed making use of a recently developed OLI-based chemical model. After initial validation of the model by comparison to experimentally determined CaSO 4 phase-transi…
Calcium Carbonate Crystallization and InhibitionCrystallization and Solubility StudiesChemical and Physical Properties in Aqueous Solutions
Hui Jiang、Xiaoyong Zhao、Kirk S. Schanze2006-05-19Langmuir
The fluorescence of conjugated polyelectrolytes (CPEs) is quenched with very high efficiency by small molecule quenchers. This effect has been referred to as amplified quenching. In the present communication, we demonstrate that aggregation of a poly(phenylene ethynylene)-type CPE (PPE-CO2-) induced by Ca2+ has a pron…
Conducting polymers and applicationsLuminescence and Fluorescent MaterialsPolydiacetylene-based materials and applications
P. Zhan、Z. L. Wang、Han Dong 等 9 位作者2006-05-19Advanced Materials
Plasmonic crystals with submicrometer periodicity and extraordinary dispersion properties that depend on the polarization of incident light are obtained by partially covering silica or polystyrene spheres with a thin gold film (see figure). The optical properties of these two-dimensional ordered metallodielectric micr…
Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchPhotonic Crystals and Applications
Hong Jin Fan、Bodo Fuhrmann、Roland W. Scholz 等 11 位作者2006-05-19Nanotechnology
ZnO nanowires and nanobelts are two representatives of one-dimensional semiconductor nanomaterials possessing potential applications as optoelectronic and sensor devices. In this study, we applied a vapour-transport-deposition method to synthesize both types of nanostructures using relatively low temperatures (860 °C)…
ZnO doping and propertiesQuantum Dots Synthesis And PropertiesGas Sensing Nanomaterials and Sensors
Fuyong Cheng、Sheng Zhang、Alex Adronov 等 5 位作者2006-05-19Chemistry - A European Journal
The photophysical, electrochemical, and self-assembly properties of a novel triply fused Zn(II)-porphyrin trimer were investigated and compared to the properties of a triply fused porphyrin dimer and the analogous monomer. The trimer exhibited significantly red-shifted absorption bands relative to the corresponding mo…
Porphyrin and Phthalocyanine ChemistryMolecular Junctions and NanostructuresSurface Chemistry and Catalysis
Maude Jimenez、Sophie Duquesne、Serge Bourbigot2006-05-19Industrial & Engineering Chemistry Research
The goal of this work is to combine small-scale screening tests permitting, during the laboratory research phase of a development, the optimization of intumescent mastic coatings formulated to protect steel in the case of hydrocarbon fire. This type of coating, applied on steel plates, beams, or columns, is usually ev…
Polymer Nanocomposites and PropertiesFire dynamics and safety researchFlame retardant materials and properties
Xufeng Wu、Gaoquan Shi2006-05-19The Journal of Physical Chemistry B
The present work reports a simple and economic route for production and characterization of stable superhydrophobic surfaces from thin copper layers coated on arbitrary solid substrates. The thin copper layer was anodized in a 2 M aqueous solution of potassium hydroxide to form a thin film of copper hydroxide nanoneed…
Surface Modification and SuperhydrophobicityFluid Dynamics and Thin FilmsAerogels and thermal insulation