Wanderson G. Trindade、William Hoareau、Ilce Aiko Tanaka Razera 等 6 位作者2004-08-02Macromolecular Materials and Engineering
Abstract Summary: A new chemical modification of sugar cane bagasse fibers for phenolic thermoset composites is presented. It consists in creating quinones in the lignin portions of fiber and react them with furfuryl alcohol to create a coating around the fiber more compatible with the phenolic resins used to prepare…
Fiber-reinforced polymer compositesAdvanced Cellulose Research StudiesNatural Fiber Reinforced Composites
Zhiyuan Tian、Yu Chen、Wensheng Yang 等 6 位作者2004-08-02Angewandte Chemie International Edition
Dye hard: Strong intermolecular interactions of stilbazolium-like dyes with different structures and conformations seem to act as the main driving force for the formation of nanostructures with distinct morphological and spectral properties. Nanorods and nanospheres (see picture) with well-defined shapes and uniform s…
Luminescence and Fluorescent MaterialsConducting polymers and applicationsPhotochromic and Fluorescence Chemistry
Yanling Ge、Oleg Heczko、Outi Söderberg 等 4 位作者2004-08-02Journal of Applied Physics
Magnetic domain structures of the Ni–Mn–Ga martensite were observed by means of type I and type II magnetic contrast in scanning electron microscope. The different configuration of magnetic domain patterns coupled together with the twin structures were studied in multivariant, two-variant, and single-variant martensit…
Shape Memory Alloy TransformationsMagnetic and transport properties of perovskites and related materials
Toshiaki Furuta、Hiroko Takeuchi、M. Isozaki 等 12 位作者2004-08-02ChemBioChem
Cyclic nucleoside monophosphates (cNMPs) play key roles in many cellular regulatory processes, such as growth, differentiation, motility, and gene expression. Caged derivatives that can be activated by irradiation could be powerful tools for studying such diverse functions of intracellular second messengers, since the…
Photochromic and Fluorescence ChemistryLuminescence and Fluorescent MaterialsConducting polymers and applications
Yu‐Long Chang、Yu‐Zhong Wang、Daming Ban 等 5 位作者2004-08-02Macromolecular Materials and Engineering
Abstract Summary: A novel phosphorus‐containing polymeric retardant, WLA‐3, was synthesized from phenylphosphonic dichloride (PPD) and 2‐(6‐oxido‐6H‐dibenz〈c,e〉〈1,2〉oxaphosphorin‐6‐yl) 1, 4‐benzenediol (ODOPB). The flame‐retardant element, phosphorus, was bonded both in the main chains and in the pendant chains of fla…
Silicone and Siloxane ChemistrySynthesis and properties of polymersFlame retardant materials and properties
G. Kalaprasad、Bejoy Francis、Selvin P. Thomas 等 9 位作者2004-08-02Polymer International
Abstract Hybrid composites prepared by the incorporation of two or more different types of fibres into a single polymer matrix deserve much attention. This method of hybridisation of composites offers a profitable procedure for the fabrication of products while the resulting materials are noted for their high specific…
Mechanical Behavior of CompositesTribology and Wear AnalysisNatural Fiber Reinforced Composites
M. A. Scarpulla、K. M. Yu、W. Walukiewicz 等 4 位作者2004-08-02arXiv
We have investigated the transport and magnetization characteristics of Ga1-xMnxAs intentionally compensated with shallow Te donors. Using ion implantation followed by pulsed-laser melting, we vary the Te compensation and drive the system through a metal-insulator transition (MIT). This MIT is associated with enhanced…
Materials Science
K. Alberi、A. Minor、M. A. Scarpulla 等 8 位作者2004-08-02arXiv
A novel approach to the fabrication of GaNxAs1-x quantum dots and wires via ion beam patterning is presented. Photomodulated reflectance spectra confirm that N can be released from the As sublattice of an MBE-grown GaNxAs1-x film by amorphization through ion implantation followed by regrowth upon rapid thermal anneali…
Materials Science
Han Zhu、Shuai Dong、J. -M. Liu2004-08-02arXiv
The hysteresis of the Ising model in a spatially homogeneous AC field is studied using both mean-field calculations and two-dimensional Monte Carlo simulations. The frequency dispersion and the temperature dependence of the hysteresis loop area are studied in relation to the dynamic symmetry loss. The dynamic mechanis…
Materials Sciencecond-mat.stat-mech
T. P. Devereaux、T. Cuk、Z. -X. Shen 等 4 位作者2004-08-02arXiv
We explore manifestations of electron-phonon coupling on the electron spectral function for two phonon modes in the cuprates exhibiting strong renormalizations with temperature and doping. Applying simple symmetry considerations and kinematic constraints, we find that the out-of-plane, out-of-phase O buckling mode (B_…
SuperconductivityStrongly Correlated ElectronsMaterials Science
E. Kojima、J. B. Heroux、R. Shimano 等 7 位作者2004-08-02arXiv
Time-resolved transmittance measurements performed on Ga$_{0.94}$Mn$_{0.06}$As in the vicinity of the Mn-induced mid-infrared absorption band are presented. Upon photo-excitation, a slow increase (hundreds of ps timescale) of the differential transmittance is observed and found to be directly related to demagnetizatio…
Materials ScienceStrongly Correlated Electrons
Gilad Haran2004-08-02arXiv
Single molecule Raman spectroscopy provides information on individual molecules with vibrational-level resolution. The unique mechanisms leading to the huge Raman cross-section enhancement necessary for single molecule sensitivity are under intense investigation in several laboratories. We recently analyzed large spec…
Soft Condensed MatterChemical PhysicsMaterials Science
Xingcheng Xiao、J. Birrell、J. E. Gerbi 等 5 位作者2004-08-02Journal of Applied Physics
Ultrananocrystalline diamond (UNCD) films were prepared by microwave plasma chemical vapor deposition using argon-rich Ar∕CH4 plasmas at substrate temperatures from ∼400 to 800°C. Different seeding processes were employed to enhance the initial nucleation density for UNCD growth to about 1011sites∕cm2. High-resolution…
Metal and Thin Film MechanicsHigh-pressure geophysics and materialsDiamond and Carbon-based Materials Research
Xingzhong Guo、Yang Hui2004-08-01Journal of Zhejiang University. Science A
Silicon carbide ceramics were prepared with SiC powder treated by the fluidized bed opposed jet mill as raw materials, and the effects of the ultra-fine treatment mechanism on the compaction and sintering behavior of SiC ceramics were investigated. The results showed that the compacts had higher density and microstruc…
Aluminum Alloys Composites PropertiesAdvanced materials and compositesAdvanced ceramic materials synthesis
Orde Q. Munro、N. Pearson2004-08-01Journal of Porphyrins and Phthalocyanines
The single crystal X-ray structure of [ Co ( TPP )( BzNH 2 ) 2 ]( SCN ), compound 2, where TPP = 5,10,15,20-tetraphenylporphyrin dianion and BzNH 2 = benzylamine, reveals that the SCN - ion is hydrogen-bonded to one of the coordinated amino group hydrogen atoms via its sulfur atom. Furthermore, the N – H ⋯ SCN interac…
Metal-Catalyzed Oxygenation MechanismsPorphyrin and Phthalocyanine ChemistryMetal complexes synthesis and properties
Teen‐Hang Meen、Wen Ray Chen、Chien-Jung Huang 等 4 位作者2004-08-01Japanese Journal of Applied Physics
In this paper, we present a process for growing a Cu seed layer on a Ta/SiO 2 /Si substrate using an electroless plating (ELP) process at an extremely low temperature (∼30°C). In this process, the activation treatment of the Ta/SiO 2 /Si substrate was carried out by immersion in a PdCl 2 /HCl solution prior to electro…
Copper Interconnects and ReliabilityElectrodeposition and Electroless CoatingsElectronic Packaging and Soldering Technologies
V. A. Delev、O. A. Skaldin2004-08-01Technical Physics Letters
Flexoelectric instability was observed in a hybrid aligned nematic liquid crystal layer with the director having planar orientation at one substrate and homeotropic at the other substrate. The threshold and contrast characteristics of the electrooptical cell and the differential flexoelectric coefficient e = e 11 – e…
Advanced Materials and MechanicsLiquid Crystal Research AdvancementsForce Microscopy Techniques and Applications
Lance Frazer2004-08-01Environmental Health Perspectives
As the 2010 phaseout date for chlorofluorocarbons draws nearer, materials engineers are working to find replacements for these ozone-depleting chemicals in the production of plastics and other products. One team of engineers is focusing on a combination of two low-cost and environmentally benign substances--supercriti…
Carbon Nanotubes in CompositesPolymer Foaming and CompositesPhase Equilibria and Thermodynamics
P. Predeep、R. Sreeja、Rosamma Alex 等 4 位作者2004-08-01Progress in Rubber Plastics and Recycling Technology
In this paper we demonstrate for the first time that pre-vulcanized NR latex can be doped by iodine to become electrically conducting. The study reveals that pre-vulcanisation will not hinder the formation of conjugated sequences, which is widely accepted as a prerequisite for developing intrinsic electrical conductiv…
Organic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsConducting polymers and applications
Seiji Takeda、Hideto Yoshida2004-08-01Microscopy and Microanalysis
Extended abstract of a paper presented at the Pre-Meeting Congress: Materials Research in an Aberration-Free Environment, at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, July 31 and August 1, 2004.
Electron and X-Ray Spectroscopy TechniquesAdvanced Electron Microscopy Techniques and Applications