Yugui Jiang、Zhiqiang Wang、Xi Yu 等 8 位作者2005-02-03Langmuir
This paper describes the fabrication of surfaces with different wettability, superhydrophobic/superhydrophilic, and pH-responsive properties. We used a self-assembled monolayer (SAM) of a dendron thiol as the underlying surface for electrodeposition of gold nanostructures. After this modification with a SAM of n-dodec…
Surface Modification and SuperhydrophobicityDendrimers and Hyperbranched PolymersMolecular Junctions and Nanostructures
Hayal Bülbül Sönmez、Fred Wudl2005-02-03Macromolecules
A simple method for the synthesis of a series of cross-linked poly(orthocarbonate)s (CPOC), based on tetraethyl orthocarbonate, is reported. Structural evidence for CPOCs was obtained from 13 C solid-state NMR, FT-IR, and thermal analysis. All polymers have high and fast uptake of organic fluids such as tetrahydrofura…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesSynthesis and properties of polymers
M. Cannas、F. Messina2005-02-03arXiv
We investigated various types of commercial silica irradiated with a pulsed Nd:YAG laser radiation (4.66 eV), with exposure time ranging up to 10000 s. Transient E' centers were probed in situ by measuring the amplitude of the optical absorption band at 5.8 eV (due to E' centers) both during and after irradiation. The…
Materials Science
Flavio H. Fenton、Elizabeth M. Cherry、Alain Karma 等 4 位作者2005-02-03Chaos An Interdisciplinary Journal of Nonlinear Science
We present a novel algorithm for modeling electrical wave propagation in anatomical models of the heart. The algorithm uses a phase-field approach that represents the boundaries between the heart muscle and the surrounding medium as a spatially diffuse interface of finite thickness. The chief advantage of this method…
Nonlinear Dynamics and Pattern FormationElasticity and Material ModelingSolidification and crystal growth phenomena
Yi Liao、B. E. Eichinger、Kimberly A. Firestone 等 11 位作者2005-02-03Journal of the American Chemical Society
A series of novel nonlinear optical (NLO) chromophores 1-4 incorporating the ferrocenyl (Fc) group as an electron donor and 2-dicyanomethylene-3-cyano-4-methyl-2,5-dihydrofuran (TCF) derivatives as electron acceptors are presented. The use of a constant Fc donor and varied acceptors and bridges makes it possible to sy…
Chemical synthesis and pharmacological studiesNonlinear Optical Materials ResearchCrystal structures of chemical compounds
Manabu Kiguchi、Genki Yoshikawa、Susumu Ikeda 等 4 位作者2005-02-03arXiv
The spatial distribution and site- distribution of metal induced gap states (MIGS) are studied by thickness dependent near edge x-ray absorption fine structure (NEXAFS) and comparing the cation and anion edge NEXAFS. The thickness dependent NEXAFS shows that the decay length of MIGS depends on rather an alkali halide…
Materials Science
I. Bena、M. Droz、Z. Racz2005-02-03arXiv
The effects of an external electric field on the formation of Liesegang patterns are investigated. The patterns are assumed to emerge from a phase separation process in the wake of a diffusive reaction front. The dynamics is described by a Cahn-Hilliard equation with a moving source term representing the reaction zone…
Chemical Physicscond-mat.othercond-mat.stat-mechMaterials Science
Phani Kumar V. V. Nukala、Stefano Zapperi、Srdan Simunovic2005-02-03arXiv
Using large scale numerical simulations we analyze the statistical properties of fracture in the two dimensional random spring model and compare it with its scalar counterpart: the random fuse model. We first consider the process of crack localization measuring the evolution of damage as the external load is raised. W…
Materials Sciencecond-mat.stat-mech
Tatiana Seletskaia、Yuri N. Osetsky、R.E. Stoller 等 4 位作者2005-02-03Physical Review Letters
Density functional theory calculations of He defect properties in iron have shown an unexpected influence of magnetism arising from the defect's electronic structure. In contrast with previous work that neglected such effects, the results indicate that the tetrahedral position is energetically more favorable for the H…
Nuclear Materials and PropertiesHigh-pressure geophysics and materialsFusion materials and technologies
Hongjun Xiang、Jinlong Yang、Jian Hou 等 4 位作者2005-02-03New Journal of Physics
We have studied zig-zag boron nitride (BN) nanotubes filled with the Ni hexagonal-close-packed nanowire. The Ni/BN nanotube hybrid structures are ferromagnetic metals with substantial magnetism. Some special magnetic properties resulting from the interaction between the Ni nanowire and BN nanotubes are found. The Ni e…
Graphene research and applications2D Materials and ApplicationsBoron and Carbon Nanomaterials Research
Matthew F. Chisholm、Sharvan Kumar、P. M. Hazzledine2005-02-03Science
Deformation of metals and alloys by dislocations gliding between well-separated slip planes is a well-understood process, but most crystal structures do not possess such simple geometric arrangements. Examples are the Laves phases, the most common class of intermetallic compounds and exist with ordered cubic, hexagona…
Microstructure and mechanical propertiesAdvanced Materials Characterization TechniquesNuclear Materials and Properties
Giovanni Bertoni、L. Calmels、A. Altibelli 等 4 位作者2005-02-03Physical Review B
A spin-polarized first-principles calculation of the atomic and electronic structure of the graphene/Ni(111) interface is presented. Different structural models have been considered, which differ in the positions of the carbon atoms with respect to the nickel topmost layer. The most probable structure, which has the l…
Electron and X-Ray Spectroscopy TechniquesSurface and Thin Film PhenomenaGraphene research and applications
Weili Zhao、Erick M. Carreira2005-02-03Angewandte Chemie
Farbe bekennen: Der stark fluoreszierende photostabile Azadipyrromethen-Farbstoff 1 (λem=751 nm) mit einer scharfen und intensiven Absorption (Halbwertsbreite=30.4 nm; ε=159 000) im NIR-Bereich (λmax=740 nm) wird beschrieben. Der Farbstoff ist unempfindlich gegen die Polarität des Lösungsmittels, erfüllt die Anforderu…
Molecular Sensors and Ion DetectionLuminescence and Fluorescent MaterialsPhotochromic and Fluorescence Chemistry
Yaobang Li、Yaning He、Xiao‐Lan Tong 等 4 位作者2005-02-03Journal of the American Chemical Society
Photoinduced shape deformation of colloidal spheres made of an amphiphilic azo polymer has been demonstrated in this work. The polymer contains the donor-and-acceptor-type azobenzene chromophores and can form uniform colloidal spheres by dropwise adding water into its THF solution. When the colloidal spheres obtained…
Liquid Crystal Research AdvancementsNonlinear Optical Materials StudiesPhotonic Crystals and Applications
Weili Zhao、Erick M. Carreira2005-02-03OpenAlex
To dye for: A highly fluorescent, photostable aza-dipyrromethene dye 1 (λem=751 nm) with sharp and intense absorption (full width at half maximum height=30.4 nm; ε=159 000) in the near-infrared (NIR) region (λmax=740 nm) is reported. The dye is insensitive to solvent polarity, meets the requirements of a NIR chromopho…
Luminescence and Fluorescent MaterialsPhotochromic and Fluorescence ChemistryMolecular Sensors and Ion Detection
Céline Lichtensteiger、Jean‐Marc Triscone、Javier Junquera 等 4 位作者2005-02-03arXiv
The evolution of tetragonality with thickness has been probed in epitaxial c-axis oriented PbTiO3 films with thicknesses ranging from 500 down to 24 A. High resolution x ray pointed out a systematic decrease of the c-axis lattice parameter with decreasing film thickness below 200 A. Using a first-principles model Hami…
Multiferroics and related materialsFerroelectric and Piezoelectric MaterialsAcoustic Wave Resonator Technologies
Christopher J. Ellison、Manish K. Mundra、John M. Torkelson2005-02-03OpenAlex
The effect of nanoconfinement on the glass transition temperature ( T g ) of supported polystyrene (PS) films is investigated over a broad molecular weight (MW) range of 5000−3 000 000 g/mol. Polystyrene MW is shown to have no significant impact on the film thickness dependence of T g − T g,bulk . In contrast, a small…
Polymer Nanocomposites and PropertiesPolymer crystallization and propertiesMaterial Dynamics and Properties
José Aldana、Natasha Lavelle、Yunjun Wang 等 4 位作者2005-02-03OpenAlex
A method, pseudo steady-state titration, is introduced for determining the precipitation pH of nanocrystals coated by electron-donating ligands. CdSe nanocrystals coated with hydrophilic deprotonated thiol (thiolate) ligands were studied systematically. For comparison, CdTe and CdS nanocrystals coated with the same ty…
Quantum Dots Synthesis And PropertiesCopper-based nanomaterials and applicationsChalcogenide Semiconductor Thin Films
Jianming Zhang、Harumi Sato、Hideto Tsuji 等 5 位作者2005-02-03OpenAlex
The nature of the “peculiarly strong” interaction between the poly( l -lactide) (PLLA) and poly( d -lactide) (PDLA) chains was investigated by real time infrared spectroscopy during the isothermal melt crystallization process of the PLLA/PDLA stereocomplex. A very small low-frequency shift (about 1 cm -1 ) of ν as (CH…
biodegradable polymer synthesis and propertiesNanocomposite Films for Food PackagingMicroplastics and Plastic Pollution
Quanchang Li、Vageesh Kumar、Yan Li 等 6 位作者2005-02-03OpenAlex
A novel aqueous solution method has been developed for growing well-aligned crystalline ZnO nanorods (NRs) and nanotubes (NTs) on a variety of substrates including Si wafers, poly(ethylene terephthalate) (PET), and sapphire. Atomic layer deposition (ALD) was first used to grow a uniform ZnO film on the substrate of ch…
Quantum Dots Synthesis And PropertiesZnO doping and propertiesGas Sensing Nanomaterials and Sensors