Eduardo Jule、Yukio Nagasaki、Kazunori Kataoka2002-11-20Langmuir
Poly(ethylene glycol)−poly( d, l -lactide) (PEG−PLA) block copolymer micelles bearing lactose moieties on their surface were prepared, and their interaction with the lectin Ricinus Communis Agglutinin (RCA-I) was evaluated by surface plasmon resonance. The one-pot, ring-opening anionic polymerization used in the prepa…
Nanoparticle-Based Drug DeliveryPolymer Surface Interaction StudiesAdvanced Drug Delivery Systems
Naoto Shirahata、Yoshitake Masuda、Tetsu Yonezawa 等 4 位作者2002-11-20Langmuir
This paper presents a novel process for the fabrication of site-selectively deposited tin oxide ultrathin films (<10 nm) by using molecular recognition between the precursors and the surface of the Si substrate. Using this simple technique, the film thickness of micropatterned tin oxide films was easily controlled. Pa…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsAcoustic Wave Resonator Technologies
A. Waśkowska、L. Gerward、J. Staun Olsen 等 4 位作者2002-11-20Journal of Physics Condensed Matter
Structural changes in the cubic spinels CdCr 2−x Ga x Se 4 have been studied by means of single-crystal x-ray diffraction at low temperature and energy-dispersive diffraction in a diamond-anvil cell at high pressure. In stoichiometric samples ( x = 0), a spontaneous magnetostriction reduces the thermal expansion coeff…
Advanced Thermoelectric Materials and DevicesChalcogenide Semiconductor Thin FilmsMagnetic and transport properties of perovskites and related materials
M. Nagumo∥、Hiro Matsuda2002-11-20Philosophical magazine. A/Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties
The mechanism of intergranular-mode fracture in hydrogen-related failure of high-strength martensitic steels has been investigated. Pronounced degradation of tensile properties appeared with increasing manganese content in a slow-elongation-rate test under concurrent hydrogen charging. The fracture mode was intergranu…
Hydrogen embrittlement and corrosion behaviors in metalsNon-Destructive Testing TechniquesMaterial Properties and Failure Mechanisms
A. Lisfi、J.C. Lodder2002-11-20Journal of Physics Condensed Matter
Magnetic domains, microstructure and magnetic properties of highly oriented barium ferrite thin films with perpendicular anisotropy have been investigated with magnetic force microscopy (MFM), VSM, SEM and TEM. Two kinds of magnetic domain are energetically favourable: (a) cluster-like structure in as-deposited films…
Magnetic properties of thin filmsMagnetic Properties and Synthesis of FerritesMagnetic Properties of Alloys
Fuhai Su、B S、Zhenlan Fang 等 6 位作者2002-11-20Journal of Physics Condensed Matter
The temperature dependences of the orange and blue emissions in 10, 4.5, and 3 nm ZnS:Mn nanoparticles were investigated. The orange emission is from the 4 T 1 – 6 A 1 transition of Mn 2+ ions and the blue emission is related to the donor–acceptor recombination in the ZnS host. With increasing temperature, the blue em…
Perovskite Materials and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films
Juan A. Collado、Carlos Frontera、J. L. Garcı́a-Muñoz 等 6 位作者2002-11-20Chemistry of Materials
La 5/8 - x Pr x Ca 3/8 MnO 3 ( x = 0, 0.1, 0.2, 0.25, 0.3, 0.35, 0.375, 0.4, 0.412, 0.425, 0.45, 0.5, 5 / 8 ) series has been synthesized by the ceramic method. All manganites are single phase crystallizing in the Pnma space group. The evolution of cell parameters along the series indicates that the orthorhombic perov…
Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics
S. Surnev、J. Schoiswohl、Georg Kresse 等 5 位作者2002-11-20Physical Review Letters
Exposing vanadium oxide nanoparticles on a Pd(111) surface to reducing conditions is shown to cause a spreading of the oxide over the metal until a reduced oxide phase covers the entire surface. Reoxidation reverses this process and oxide island structures and bare metal patches are reestablished. The physical origin…
Catalytic Processes in Materials ScienceCatalysis and Oxidation Reactionsnanoparticles nucleation surface interactions
Patrizia Polverino de Laureto、Erica Frare、Rossella Gottardo 等 5 位作者2002-11-20Protein Science
The partly folded states of protein members of the lysozyme (LYS)/alpha-lactalbumin (LA) superfamily have been analyzed by circular dichroism (CD) measurements and limited proteolysis experiments. Hen, horse, dog, and pigeon LYSs and bovine LA were used in the present study. These are related proteins of 123- to 129-a…
Protein Structure and DynamicsProteins in Food SystemsEnzyme Structure and Function
Donald Haydon2002-11-20Assembly Automation
ElectRelease was originally developed to temporarily bond monitoring instruments to supersonic fighter aircraft permitting subsequent disbonding without surface damage or marking. ElectRelease is an electrically disbonding epoxy adhesive. Article describes the development of the adhesive and its properties and applica…
Energetic Materials and CombustionMaterial Properties and Applications
Alexandra Rapaport、Shengzhi Zhao、Guohua Xiao 等 5 位作者2002-11-20Applied Optics
A linear temperature dependence between -70 degrees C and +70 degrees C is reported for the peak stimulated emission cross section of Nd3+ ions in both yttrium aluminum garnet (YAG) and gadolinium scandium gallium garnet (GSGG).
Luminescence Properties of Advanced MaterialsSolid State Laser TechnologiesQuantum optics and atomic interactions
Ryoichi Kajimoto、H. Yoshizawa、Y. Tomioka 等 4 位作者2002-11-20Physical review. B, Condensed matter
We demonstrate that an A-type antiferromagnetic (AFM) state of ${\mathrm{Pr}}_{0.5}{\mathrm{Sr}}_{0.5}{\mathrm{MnO}}_{3}$ exhibits a charge ordering that governs the transport property. This charge ordering is stripelike, being characterized by a wave vector $\mathit{q}\ensuremath{\sim}(0,0,0.3)$ with very anisotropic…
Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics
Xin Chen、David P. Knight、Zhengzhong Shao 等 4 位作者2002-11-20Biochemistry
We used time-resolved Fourier transform infrared spectroscopy (FTIR) to follow a conformation transition in Nephila spidroin film from random coil and/or helical structures to beta-sheet induced by the addition of KCl from 0.01 to 1.0 mol/L in D(2)O. Time series difference spectra showed parallel increases in absorpti…
Silk-based biomaterials and applicationsPhytochemical compounds biological activitiesBiochemical and Structural Characterization
Stefan Diebels、Holger Steeb2002-11-20Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences
Experimental data for foams lead to different values of the elastic moduli depending on the performed test, i.e. compression and tension tests give a different set of parameters than shear and bending tests. This may be explained by the size effect, which depends on the microstructure of the foams. Thus, in this paper…
Cellular and Composite StructuresElasticity and Material ModelingNonlocal and gradient elasticity in micro/nano structures
Masafumi Tamura、Reìzo Kato2002-11-20Journal of Physics Condensed Matter
The magnetic susceptibilities of a series of compounds, β'-X[Pd(dmit)2]2 (X = Me4As, Me4P, Me4Sb, Et2Me2P, and Et2Me2Sb, where Me = CH3 and Et = C2H5), have been investigated. The temperature dependence of χ has been analysed in terms of the two-dimensional spin-1/2 Heisenberg antiferromagnet on the triangular lattice…
Magnetism in coordination complexesAdvanced Condensed Matter PhysicsOrganic and Molecular Conductors Research
Jae Soo Kang2002-11-20Bulletin of the Korean Chemical Society
In the present work, we studied thiram on silver surface by SERS. Investigations of disulfides with SERS revealed that the molecules undergo a surface reaction on silver, namely easy cleavage of the S-S bond. We believe that the two S atoms of resonance formed from the thiram may be chemisorbed strongly on Ag sol. Thi…
Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesMolecular Junctions and Nanostructures
V. V. Ivanovskaya、A. N. Enyashin、N. I. Medvedeva 等 4 位作者2002-11-20arXiv
quasi-one-dimensional (1D) titania nanostructures - single-walled nanotubes formed by rolling [101] planes of TiO$_2$ (anatase phase) are modeled and their electronic properties and bond orders indices are studied using the tight-binding band theory. We show that all zigzag (n,0)- and armchair (n,n)-like nanotubes are…
Materials Science
Subhadip Raychaudhuri、Yonathan Shapir2002-11-20arXiv
The scaling properties of the roughness of surfaces grown by two different processes randomly alternating in time, are addressed. The duration of each application of the two primary processes is assumed to be independently drawn from given distribution functions. We analytically address processes in which the two prim…
Materials Sciencecond-mat.stat-mech
Brian Utter、Eberhard Bodenschatz2002-11-20Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
We report experimental results on quasi-two-dimensional diffusion limited growth in directionally solidified succinonitrile with small amounts of poly(ethylene oxide), acetone, or camphor as a solute. Seaweed growth, or dense branching morphology, is selected by growing grains close to the [111] plane, where the in-pl…
Material Dynamics and PropertiesTheoretical and Computational PhysicsSolidification and crystal growth phenomena
S. Baskoutas、A. F. Terzis2002-11-20arXiv
The donor binding energies associated with the ground state and a few excited states, are computed as a function of the dot size and the impurity position within two and three dimensional GaAs quantum dots. The calculation has been done using the Potential Morphing Method - a recently developed numerical method for th…
Materials Science