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Discotic liquid crystals of transition metal complexes, part 36: syntheses and mesomorphic properties of very large discotic liquid crystals based on triphenylenocyanine and 1,4-diazatriphenylenocyanine

Masahiro Ichihara、Masakazu Miida、Bernhard Mohr 等 4 位作者2006-09-01Journal of Porphyrins and Phthalocyanines

Two series of very large discotic complexes of tetrakis (2,3,6,7-tetraalkoxy)triphenylenocyaninato copper(II) (abbreviated as ( C n O ) 16 TcCu ; n = 8, 10, 12 and 14) and tetrakis(2,3,6,7-tetraalkoxy)-1,4-diazatriphenylenocyaninato copper(II) (abbreviated as ( C n O ) 16 TzCu ; n = 8, 10, 12 and 14), were synthesized…

Liquid Crystal Research AdvancementsNonlinear Dynamics and Pattern FormationMolecular spectroscopy and chirality

Photophysical studies of supramolecular triads involving zinc naphthalocyanines and pyridylfullerenes with a second electron donor

Mohamed E. El‐Khouly、Yasuyuki Araki、Osamu Ito 等 6 位作者2006-09-01Journal of Porphyrins and Phthalocyanines

Supramolecular triads composed of zinc naphthalocyanine ( ZnNc ) as an electron donor, pyridylfullerenes as primary electron acceptors, and either ferrocene ( Fc ) or N , N -dimethylaminophenyl ( DMA ) entities as second electron donors were constructed via metal-ligand axial coordination. The formation of the supramo…

Porphyrin and Phthalocyanine ChemistryFullerene Chemistry and ApplicationsPhotochemistry and Electron Transfer Studies

Influence of Natural and Synthetic Additives on Calcium Carbonate Precipitation and Crystal Morphology

Zahid Amjad2006-09-01Tenside Surfactants Detergents

Abstract The pH-stat technique has been used to study the influence of several natural and synthetic additives containing carboxyl, phenolic, and sulfonic groups on the precipitation of calcium carbonate from supersaturated solutions (Ca=HCO 3 = 5.50 mM, NaCl=0.10 M, pH 8.50, 35°C). The additives investigated were nat…

Calcium Carbonate Crystallization and InhibitionBuilding materials and conservationCrystallization and Solubility Studies

Production and characterization of indium oxide and indium nitride

Luis C. Jimenez B.、Henry A. Méndez P.、Beynor Antonio Páez-Sierra 等 5 位作者2006-09-01Brazilian Journal of Physics

Thin films of indium oxide 200 nm thick and indium nitride 150 nm thick were produced by reactive sputtering deposition onto soda lime substrates. The Indium cathode was kept under vacuum attached to a high voltage dc. The In xOy films were obtained in argon-oxygen mixture with total pressure between 2 and 7 Pa, curre…

ZnO doping and propertiesGaN-based semiconductor devices and materialsGas Sensing Nanomaterials and Sensors

Laser annealing of laser assisted molecular beam deposited ZnO thin films with application to metal-semiconductor-metal photodetectors

Meiya Li、Wayne A. Anderson、Nehal Chokshi 等 5 位作者2006-09-01Journal of Applied Physics

We report on the effect of postdeposition laser annealing of undoped zinc oxide (ZnO) thin films grown by laser assisted molecular beam deposition. Hall-effect measurements show that some undoped ZnO films change from n type with mobility values in the range of 200cm2V−1s−1 to p-type material with mobility value of 73…

ZnO doping and propertiesGa2O3 and related materialsElectronic and Structural Properties of Oxides

Study on the Performance of Diglycidyl Ether of Bisphenol-A/Hyperbranched Aromatic Polyester Epoxy Resin (HTME) System and Their Toughness Mechanism

Daohong Zhang、Demin Jia2006-09-01Polymer-Plastics Technology and Engineering

This paper reports on the use of liquid hyperbranched aromatic polyester epoxy resin (HTME) as an additive to an epoxy resin/amine system. Four kinds of different molecular weight and epoxy equivalent weight HTME as modifiers in the diglycidyl ether of bisphenol-A (DGEBA) amine systems are discussed in detail. It was…

Epoxy Resin Curing ProcessesDendrimers and Hyperbranched PolymersSynthesis and properties of polymers

Physical-chemical and biological characterization of silk fibroin-coated porous membranes for medical applications.

Clara Cassinelli、G. Cascardo、Marco Morra 等 6 位作者2006-09-01PubMed

Membranes in artificial organs and scaffolds for tissue engineering are often coated with biomimetic molecules (e.g., collagen) to improve their biocompatibility and promote primary cell adhesion and differentiation. However, animal proteins are expensive and may be contaminated with prions. Silk fibroin (SF) made by…

Electrospun Nanofibers in Biomedical ApplicationsPolymer Surface Interaction StudiesSilk-based biomaterials and applications

Behavior of 60 to 78MWd/kgU PWR Fuels under Reactivity-Initiated Accident Conditions

Toyoshi FUKETA、Tomoyuki Sugiyama、Fumihisa Nagase2006-09-01Journal of Nuclear Science and Technology

To provide a data base for the regulatory guide of light water reactors, behavior of reactor fuels during off-normal and postulated accident conditions such as reactivity-initiated accident (RIA) is being studied in the Nuclear Safety Research Reactor (NSRR) program of the Japan Atomic Energy Agency (JAEA). The paper…

Nuclear reactor physics and engineeringNuclear Materials and PropertiesNuclear and radioactivity studies

Theoretical studies on 〈100〉 dislocations in single crystal CVD diamond

N. Fujita、A. T. Blumenau、R. Jones 等 5 位作者2006-09-01physica status solidi (a)

Abstract Dislocations are common defects in both natural as well as in CVD‐grown diamond. Recent advances in the growth of high quality single crystal CVD diamond have led to an increased interest in the atomistic and electronic structure of 〈100〉 dislocations. These dislocations are observed as mixed‐type 45° and pur…

Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchBoron and Carbon Nanomaterials Research

Thermally stimulated currents in amorphous barium titanate thin films deposited by rf magnetron sputtering

F. El Kamel、P. Gonon、F. Jomni 等 4 位作者2006-09-01Journal of Applied Physics

Thermally stimulated currents (TSCs) are measured in amorphous barium titanate thin films deposited by the rf sputtering technique. The TSC global curve is composed of three overlapping peaks in the 0–200°C temperature range. At 50°C, a first TSC peak is observed that can be related to a shallow-trap level. A second p…

Ferroelectric and Piezoelectric MaterialsSemiconductor materials and devicesAcoustic Wave Resonator Technologies

Fission Gas Release Behavior from High Burnup UO 2 Fuels under Rapid Heating Conditions

Katsumi UNE、Shinji KASHIBE、Akira Takagi2006-09-01Journal of Nuclear Science and Technology

Fission gas release (FGR) behavior under rapid heating conditions of high burnup UO2 fuels with developed rim structure has been examined using two different out-of-pile heating techniques with no restraint pressure. The burnups of the fuel specimens were 36–86 GWd/tU. The bare fuel specimens were heated up to 600-1,8…

Nuclear reactor physics and engineeringRadioactive element chemistry and processingNuclear Materials and Properties

Development of Diclofenac Sodium Releasing Bio-Erodible Polymeric Nanomats

Anna Maria Piras、L. Nikkola、Emo Chiellini 等 5 位作者2006-09-01Journal of Nanoscience and Nanotechnology

Application of nanofiber-based nanomats in medicine is attractive and thanks to the 3D nanostructure and the high surface to volume ratio they are excellent for local controlled drug delivery. The use of bioactive bioerodible polymers for developing drug delivery nanomats may allow for drug release and targeting contr…

Electrospun Nanofibers in Biomedical ApplicationsAdvanced Drug Delivery SystemsDendrimers and Hyperbranched Polymers

Three-Dimensional Morphology of Carbon Black in NR Vulcanizates as Revealed by 3D-Tem and Dielectric Measurements

Atsushi Kato、Junichi Shimanuki、Shinzo Kohjiya 等 4 位作者2006-09-01Rubber Chemistry and Technology

Abstract Usual rubber products are a composite from rubber and nano-filler ( e.g. carbon black, silica, etc. ), and it is believed that the good dispersion of the nano-filler is the most important issue determining the performance of rubber vulcanizates. So far, transmission electron microscopy (TEM) has been the most…

Polymer Nanocomposites and PropertiesHigh voltage insulation and dielectric phenomenaForce Microscopy Techniques and Applications

Hole-Enhanced Raman Scattering

John T. Bahns、Funing Yan、Dengli Qiu 等 5 位作者2006-09-01Applied Spectroscopy

Stokes and anti-Stokes non-resonant hole-enhanced Raman scattering (HERS) spectra with high signal-to-noise ratio (S/N) are reported for the first time for aqueous phase R6G molecules adsorbed onto random nanoholes in thin gold films. Compared to conventional surface-enhanced Raman scattering from nanometric gold coll…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchSpectroscopy Techniques in Biomedical and Chemical Research

Fabrication of Lead-Free Piezoelectric KNbO3 Ceramics by Modified Solid State Reaction Method

Takahiro Wada、Akito Suzuki、Takehisa Saito2006-09-01Japanese Journal of Applied Physics

Potassium niobate (KNbO 3 ) fine powder has been successfully synthesized at a low temperature of 500 °C through a modified solid state reaction, in which urea [CO(NH 2 ) 2 ] plays an important role. High-density KNbO 3 ceramics can be obtained by the conventional sintering of the synthesized KNbO 3 fine powder with t…

Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis

Tenacidade ao entalhe por impacto Charpy de compósitos de poliéster reforçados com fibras de piaçava

Sérgio Neves Monteiro、Regina Coeli Martins Paes Aquino、Felipe Perissé Duarte Lopes 等 4 位作者2006-09-01Matéria (Rio de Janeiro)

Fibras rígidas de piaçava do tipo Attalea funifera Mart vêm sendo recentemente investigadas como reforços efetivos para compósitos de matriz polimérica. Os trabalhos até agora realizados nestes compósitos mostraram um razoável aumento na resistência mecânica com a proporção de fibra. Como algumas possíveis aplicações…

Mechanical Behavior of CompositesNatural Fiber Reinforced CompositesTextile materials and evaluations

A simple solution route to controlled synthesis of ZnS submicrospheres, nanosheets and nanorods

Zhigang Zhao、Fengxia Geng、Hongtao Cong 等 5 位作者2006-09-01Nanotechnology

ZnS nanostructures with different morphologies of submicrospheres, nanosheets and nanorods were synthesized by solution precipitation of thiourea with Zn(NO(3))(2) in the presence of block copolymer at low temperature. The sizes and morphologies of ZnS can be controlled simply by changing the processing parameters. Th…

ZnO doping and propertiesQuantum Dots Synthesis And PropertiesLayered Double Hydroxides Synthesis and Applications

Characterizing the pH-Responsive Behavior of Thin Films of Diblock Copolymer Micelles at the Silica/Aqueous Solution Interface

Kenichi Sakai、Emelyn G. Smith、Grant B. Webber 等 8 位作者2006-09-01Langmuir

The pH-responsive behavior of cationic diblock poly(2-(dimethylamino)ethyl methacrylate)-block-poly(2-(diethylamino)ethyl methacrylate) copolymer micelles adsorbed at the silica/aqueous solution interface has been characterized. The micellar morphology of this copolymer, initially adsorbed at pH 9, can be dramatically…

Surfactants and Colloidal SystemsPolymer Surface Interaction StudiesAnalytical Chemistry and Sensors

New building blocks in the 2/1 crystalline approximant of a Bergman-type icosahedral quasicrystal

Qisheng Lin、John D. Corbett2006-09-01Proceedings of the National Academy of Sciences

The refined x-ray crystal structure of the phase Mg(27)Al(10.7(2))Zn(47.3(2)) (Pa3) establishes it as the new 2/1 Bergman-type approximant of the icosahedral quasicrystal. The primitive cubic lattice consists of condensed triacontahedral and novel prolate rhombohedral (PR) clusters. Each triacontahedron encapsulates t…

Quasicrystal Structures and PropertiesX-ray Diffraction in CrystallographyMineralogy and Gemology Studies

Innovation in acid pickling treatments of copper by characterizations of a new series of Schiff bases as corrosion inhibitors

Maryam Ehteshamzadeh、T. Shahrabi、Mir Ghasem Hosseini2006-09-01Anti-Corrosion Methods and Materials

Purpose Aims to investigate the inhibitive effect of the new series of Schiff base molecules, namely, N, N′‐ethylen‐bis(salicylidenimine) [S1], N, N′‐isopropylen‐bis(salicylidenimine) [S2] and N, N′‐Ortho‐phenylen acetyl acetone imine, (2‐hydroxy Benzophenone imine) [S3] on corrosion of copper during acid pickling tre…

Corrosion Behavior and InhibitionElectrodeposition and Electroless CoatingsConcrete Corrosion and Durability