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Lanthanide(III) Complexes with a Tetrapyridine Pendant-Armed Macrocyclic Ligand: 1H NMR Structural Determination in Solution, X-ray Diffraction, and Density-Functional Theory Calculations

M.Del C. Fernandez-Fernandez、R. Bastida、A. Macías 等 6 位作者2006-05-01Inorganic Chemistry

Complexes between the tetrapyridyl pendant-armed macrocyclic ligand (L) and the trivalent lanthanide ions have been synthesized, and structural studies have been made both in the solid state and in aqueous solution. The crystal structures of the La, Ce, Pr, Gd, Tb, Er, and Tm complexes have been determined by single-c…

Magnetism in coordination complexesRadioactive element chemistry and processingLanthanide and Transition Metal Complexes

A review of metal release in the food industry

Morten Stendahl Jellesen、Anette Alsted Rasmussen、L. R. Hilbert2006-05-01Materials and Corrosion

Abstract The objective of this review is to outline literature on metal release in the food industry. Key results are reviewed from publications with high scientific level as well as papers with focus on industrial aspects. Examples of food products with a corrosive effect are given, and cases concerning processes, st…

Analytical chemistry methods developmentCorrosion Behavior and InhibitionElectrochemical Analysis and Applications

In situ measurement of Young's modulus of carbon nanotubes inside a TEM through a hybrid nanorobotic manipulation system

Masanobu Nakajima、Fumihito Arai、Toshio Fukuda2006-05-01IEEE Transactions on Nanotechnology

A hybrid nanorobotic manipulation system inside a scanning electron microscope (SEM) and a transmission electron microscope (TEM) is presented. The SEM manipulators have been constructed with 8 degrees of freedom (DOFs) with three units for effective TEM sample preparation. The TEM manipulator consists of a 3-DOF mani…

Carbon Nanotubes in CompositesForce Microscopy Techniques and ApplicationsMechanical and Optical Resonators

Electrical resistivity of Cu films deposited by ion beam deposition: Effects of grain size, impurities, and morphological defect

Jae‐Won Lim、M. Isshiki2006-05-01Journal of Applied Physics

Cu films deposited by ion beam deposition with or without a negative substrate bias voltage were found to have different states of dependence of electrical resistivity on film thickness. We have attempted to evaluate the effects of the film thickness, average grain size, impurities, and morphological defect on the res…

Metal and Thin Film MechanicsSemiconductor materials and devicesCopper Interconnects and Reliability

Antiparallel-Aligned Neutral-Ground-State and Zwitterionic Chromophores as a Nonlinear Optical Material

Yi Liao、Sanchali Bhattacharjee、Kimberly A. Firestone 等 9 位作者2006-05-01Journal of the American Chemical Society

Efficient noncentrosymmetric arrangement of nonlinear optical (NLO) chromophores with high first-order hyperpolarizability (beta) for increased electro-optical (EO) efficiency has proven challenging as strong dipolar interactions between the chromophores encourage antiparallel alignment, attenuating the macroscopic EO…

Porphyrin and Phthalocyanine ChemistryNonlinear Optical Materials ResearchNonlinear Optical Materials Studies

Resonance enhancement of optical second harmonic generation in a ZnO nanowire

R. Prasanth、Lambert K. van Vugt、Daniël Vanmaekelbergh 等 4 位作者2006-05-01Applied Physics Letters

Two-photon absorption measurement has been carried out in a single 80nm×10μm ZnO nanowire using femtosecond laser pulses in the wavelength range of 700–800nm. In addition to the deep-level green emission around 530nm due to surface defects and the near band-edge ultraviolet emission around 360nm due to the exciton, a…

ZnO doping and propertiesQuantum Dots Synthesis And PropertiesNonlinear Optical Materials Studies

Direct determination of cation site occupancies in natural ferrite spinels by L2,3 X-ray absorption spectroscopy and X-ray magnetic circular dichroism

Carolyn I. Pearce2006-05-01American Mineralogist

Cation distributions in natural ferrite spinels, some containing large amounts of Mg, Ti, Mn, and Zn, have been investigated using the element-, site-, and symmetry-selective spectroscopic techniques of L 2,3 X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD). By comparing XMCD data with…

Magnetic Properties and Synthesis of FerritesIron oxide chemistry and applicationsX-ray Diffraction in Crystallography

A Biomimetic “Polysoap” for Single-Walled Carbon Nanotube Dispersion

Dan Wang、Wenxi Ji、Zichen Li 等 4 位作者2006-05-01Journal of the American Chemical Society

As-synthesized single-walled carbon nanotubes (SWNTs) are bundled mixtures of different species. The current challenge in the field of carbon nanotube research lies in the processing and separation of SWNTs, which first require efficient dispersion of individual SWNTs in solvents. We report DNA-mimicking polysoap surf…

Carbon Nanotubes in CompositesNanopore and Nanochannel Transport StudiesNanotechnology research and applications

Synthesis and Electronic Factors in Thermal Cyclodimerization of Functionalized Aromatic Trifluorovinyl Ethers

Bryan K. Spraul、Sundaram Suresh、Jianyong Jin 等 4 位作者2006-05-01Journal of the American Chemical Society

A series of 19 p-substituted aromatic trifluorovinyl ether compounds were prepared from versatile intermediate p-Br-C(6)H(4)-O-CF=CF(2) and underwent thermal radical mediated cyclodimerization to new difunctional compounds containing the 1,2-disubstituted perfluorocyclobutyl (PFCB) linkage. The synthetic scope demonst…

Carbon dioxide utilization in catalysisSynthesis and properties of polymersChemical Reactions and Mechanisms

Preparation of La-doped BiFeO3 thin films with Fe2+ ions on Si substrates

Feng Gao、Chenxin Cai、Yuxi Wang 等 8 位作者2006-05-01Journal of Applied Physics

La-doped BiFeO3 thin films with Fe2+ ions have been prepared on Pt∕TiO2∕SiO2∕Si substrates by pulsed laser deposition in order to enhance the ferroelectric and magnetic properties. The targets for the film deposition were synthesized using a rapid liquid phase sintering technique to ensure the low leakage. The dielect…

Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsDielectric properties of ceramics

Influence of the Counterion and the Solvent Molecules in the Spin Crossover System [Co(4-terpyridone)2]Xp·nH2O

A. Galet、A.B. Gaspar、M. Carmen Muñoz 等 4 位作者2006-05-01Inorganic Chemistry

A series of new complexes belonging to the [Co(4-terpyridone)2]X(p) x nS family (4-terpyridone = 2,6-bis(2-pyridyl)-4(1H)-pyridone) have been synthesized and characterized, using X-ray single crystal determination and magnetic susceptibility studies, to be X = [BF4]- (p = 2) and S = H2O for polymorphs 1 and 2, X = [BF…

Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Modeling Young's Modulus of Polymer-layered Silicate Nanocomposites Using a Modified Halpin—Tsai Micromechanical Model

K.C. Yung、J. Wang、T.M. Yue2006-05-01Journal of Reinforced Plastics and Composites

In this study nanocomposites consisting of an epoxy matrix filled with silicate clay particles are investigated. Recent and ongoing research has shown that dramatic enhancements can be achieved in stiffness and thermal properties in these nanocomposites with small amounts of particle concentration. The resulting prope…

Asphalt Pavement Performance EvaluationPolymer crystallization and propertiesPolymer Nanocomposites and Properties

High-Density and Highly Surface Selective Adsorption of Protein–Nanoparticle Complexes by Controlling Electrostatic Interaction

Kiyohito Yamada、Shigeo Yoshii、Shinya Kumagai 等 8 位作者2006-05-01Japanese Journal of Applied Physics

High-Density and Highly Surface Selective Adsorption of Protein–Nanoparticle Complexes by Controlling Electrostatic Interaction, Yamada, Kiyohito, Yoshii, Shigeo, Kumagai, Shinya, Fujiwara, Isamu, Nishio, Kazuaki, Okuda, Mitsuhiro, Matsukawa, Nozomu, Yamashita, Ichiro

Polymer Surface Interaction StudiesMolecular Junctions and NanostructuresForce Microscopy Techniques and Applications

Identification of Poly(cis-1,4-Isoprene) Degradation Intermediates during Growth of Moderately Thermophilic Actinomycetes on Rubber and Cloning of a FunctionallcpHomologue fromNocardia farcinicaStrain E1

Ebaid M. A. Ibrahim、Matthias Arenskötter、Heinrich Luftmann 等 4 位作者2006-05-01Applied and Environmental Microbiology

The enrichment and isolation of thermophilic bacteria capable of rubber [poly(cis-1,4-isoprene)] degradation revealed eight different strains exhibiting both currently known strategies used by rubber-degrading mesophilic bacteria. Taxonomic characterization of these isolates by 16S rRNA gene sequence analysis demonstr…

biodegradable polymer synthesis and propertiesSynthetic Organic Chemistry Methods

High-Throughput Screen for Poly-3-Hydroxybutyrate in Escherichia coli and Synechocystis sp. Strain PCC6803

Keith E. J. Tyo、Hang Zhou、Gregory Stephanopoulos2006-05-01Applied and Environmental Microbiology

A novel, quantitative method for detecting poly-3-hydroxybutyrate (PHB) amounts in viable cells was developed to allow for high-throughput screening of mutant libraries. The staining technique was demonstrated and optimized for the cyanobacterium Synechocystis sp. strain PCC6803 and the eubacterium Escherichia coli to…

biodegradable polymer synthesis and propertiesMicroplastics and Plastic PollutionMicrobial Metabolic Engineering and Bioproduction

Spontaneous Transformation of CdTe Nanoparticles into Angled Te Nanocrystals: From Particles and Rods to Checkmarks, X-Marks, and Other Unusual Shapes

Zhiyong Tang、Ying Wang、Sachin Shanbhag 等 5 位作者2006-05-01Journal of the American Chemical Society

CdTe nanoparticles spontaneously transform into the branched Te nanocrystals with the unique, highly anisotropic shape of checkmarks after partial removal of the stabilizers of L-cysteine. The Te checkmarks are made in a relatively high yield and uniformity; the length of the arms is ca. 150 nm, whereas the angle betw…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsAdvanced Semiconductor Detectors and Materials

Position Control of Shape Memory Alloy Actuators by Using Self Tuning Fuzzy PID Controller

Nguyen Bao Kha、Kyoung Kwan Ahn2006-05-01OpenAlex

Shape memory alloy (SMA) actuators, which have ability to return to a predetermined shape when heated, have many potential applications in aeronautics, surgical tools, robotics and so on. Although the number of applications is increasing, there has been limited success in precise motion control since the systems are d…

Shape Memory Alloy TransformationsTopology Optimization in EngineeringPiezoelectric Actuators and Control

ZnO-nanoparticle-coated carbon nanotubes demonstrating enhanced electron field-emission properties

Joshua M. Green、Lifeng Dong、Timothy Gutu 等 6 位作者2006-05-01Journal of Applied Physics

Multiwalled carbon nanotubes (CNTs) were coated, using atomic layer deposition, with a thin layer of ZnO and subsequently annealed. Studies of the morphologies of the ZnO-coated CNTs revealed no significant change in the internal structures (multiwalled graphite sheets) and the diameters of the CNTs, but the ZnO appea…

Advancements in Battery MaterialsCarbon Nanotubes in CompositesGraphene research and applications

Fully digital hysteresis modulation with switching-time prediction

W. Stefanutti、Paolo Mattavelli2006-05-01IEEE Transactions on Industry Applications

This paper proposes a digital hysteresis-modulation technique based on switching-time prediction. Sampling controlled variables several times within a switching period, it ensures a dynamic performance comparable to that obtainable with analog hysteresis modulation. Compared to conventional digital hysteresis modulati…

Multilevel Inverters and ConvertersPhotovoltaic System Optimization TechniquesMagnetic Properties and Applications

The Interaction and Toxicity of Multi-Walled Carbon Nanotubes with <I>Stylonychia Mytilus</I>

Ying Zhu、Qunfen Zhao、Yuguo Li 等 5 位作者2006-05-01Journal of Nanoscience and Nanotechnology

The interaction of multi-walled carbon nanotubes (MWNTs) with living unicellular protozoan Stylonychia mytilus was studied. The results indicated that MWNTs were ingested largely by Stylonychia mytilus. Distribution of MWNTs in the cells, redistribution during dividing process of the cells, and excretion from the cell…

Nanoparticles: synthesis and applications