Carlos Platas‐Iglesias、Claude Piguet、Nicolas André 等 4 位作者2001-10-01Journal of the Chemical Society Dalton Transactions
A 4-aminophenylethynyl substituent has been grafted into the 4-position of the pyridine ring in dipicolinic acid to yield ligand L4 the pKa's of which are 8.77(5), 3.54(3), 2.58(1) and 1.01(3). Ligand L4 reacts with trivalent lanthanide ions to give stable triple-stranded helical complexes in water (logβ13 = 13.7(1) f…
Magnetism in coordination complexesRadioactive element chemistry and processingLanthanide and Transition Metal Complexes
Soon Yong Kweon、Si Kyung Choi、Seung Jin Yeom 等 4 位作者2001-10-01Japanese Journal of Applied Physics
The stress dependence of platinum hillock formation during post thermal cycling was investigated in Pt/Ti electrode stacks. Annealing temperatures were varied from room temperature (RT) to 650°C. High compressive stress was generated during electrode annealing by the Ti diffusion into the platinum layer followed by ox…
Ferroelectric and Piezoelectric MaterialsSemiconductor materials and devicesAcoustic Wave Resonator Technologies
Hans R. Kricheldorf、Andrea Stricker、Dennis Langanke2001-10-01Macromolecular Chemistry and Physics
Eleven different tin carboxylates were used as initiators of the ring-opening polymerization of ε-caprolactone. All polymerizations were conducted with 2 M solutions in chlorobenzene at 80°C and time/conversion curves were determined up to 96–99% conversion. The following structure-reactivity relationships were found.…
biodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysisSilicone and Siloxane Chemistry
J. Leuninger、Sarah Trimpin、Hans Joachim Räder 等 4 位作者2001-10-01Macromolecular Chemistry and Physics
The acid-induced intramolecular cyclization reaction of aromatic methylsulfinyls has proven to be a suitable synthetic tool for the preparation of ladder-type oligomers and polymers on the basis of thianthrene (= “9,10-dithiaanthracene”). This approach allows for the synthesis of tetrathiapentacene oligomers in high y…
Synthetic Organic Chemistry MethodsSynthesis and properties of polymersFerrocene Chemistry and Applications
Ramesh Chandra2001-10-01Smart Materials and Structures
This paper presents active shape control of composite beams using shape memory actuation. Shape memory alloy (SMA) bender elements trained to memorize bending shape were used to induce bending and twisting deformations in composite beams. Bending-torsion coupled graphite-epoxy and kevlar-epoxy composite beams with Tef…
Composite Structure Analysis and OptimizationShape Memory Alloy TransformationsAeroelasticity and Vibration Control
Danka Katrakova‐Krüger、Frank Mücklich2001-10-01Practical Metallography
Article Probenpräparation für die Rückstreuelektronen-Kikuchi-Beugung (Electron Backscatter Diffraction, EBSD) / Specimen Preparation for Electron Backscatter Diffraction — Part I: Metals was published on October 1, 2001 in the journal Practical Metallography (volume 38, issue 10).
Corrosion Behavior and InhibitionAluminum Alloy Microstructure PropertiesElectron and X-Ray Spectroscopy Techniques
C. H. Chia、T. Makino、Yasutomo Segawa 等 7 位作者2001-10-01Journal of Applied Physics
A set of ZnO/Mg0.12Zn0.88O multiple quantum wells (MQWs) with well widths, Lw, varying from 6.91 to 46.5 Å has been grown by laser molecular-beam epitaxy. We estimated the Lw dependence of the radiative and nonradiative recombination times of localized excitons at 5 K. Suppression of quantum efficiency can be avoided…
ZnO doping and propertiesGa2O3 and related materialsElectronic and Structural Properties of Oxides
Tadashi Miura、Toshio Watanabe、Yasuhiko Benino 等 5 位作者2001-10-01Journal of the American Ceramic Society
Elastic and mechanical properties such as Young's modulus E , Poisson's ratio ν, Debye temperature θ D , Vickers hardness H v , fracture toughness K c , and fracture surface energies γ f of y CuO x ·(100− y )P 2 O 5 glasses ( y = 45, 50, 55) with different copper valence states, i.e., R (Cu + ) = Cu + /(Cu + + Cu 2+ )…
Ferroelectric and Piezoelectric MaterialsGlass properties and applicationsMicrowave Dielectric Ceramics Synthesis
John S. Tse、Zhi Li、Kentaro Uehara2001-10-01Europhysics Letters (EPL)
The low and glasslike thermal conductivity of metal-doped semiconductor clathrate compounds makes them potentially high-efficiency thermoelectric materials. The cause of this unique and remarkable property has been postulated to be due to resonant scattering of lattice phonons by localized vibrations of the dopants. W…
Advanced Thermoelectric Materials and DevicesThermal properties of materialsThermal Expansion and Ionic Conductivity
Julin Wan、Matthew Gasch、Amiya K. Mukherjee2001-10-01Journal of the American Ceramic Society
In situ consolidation of amorphous Si‐N‐C ceramics during pyrolysis of polymer precursor provides a way to consolidate bulk silicon nitride based ceramics at lower temperatures. Porosity evolution during polymer‐ceramic conversion has been investigated to clarify the densification process. A densification mechanism ba…
Advanced ceramic materials synthesisSemiconductor materials and devicesAdvanced materials and composites
Irina V. Belova、Graeme E. Murch2001-10-01Philosophical magazine. A/Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties
This paper is concerned with the lattice and grain boundary diffusivities that can be extracted from the tracer concentration depth profile resulting from diffusion of tracers from a thin film source in the presence of equally spaced parallel boundary slabs. We address this problem by mapping a grid over the phenomeno…
Microstructure and mechanical propertiesFusion materials and technologiesAdvanced materials and composites
Jung Cho、Jongbum Nah Jongbum Nah、Min-Seok Oh Min-Seok Oh 等 7 位作者2001-10-01Japanese Journal of Applied Physics
Ga 2 O 3 (1 wt%)-doped ZnO (GZO) thin films were deposited on α-Al 2 O 3 (0001) by rf magnetron sputtering at 550°C and a polycrystalline structure was obtained. As-grown GZO thin films show poor electrical properties and photoluminescence (PL). For the improvement of these properties, GZO thin films were annealed at…
ZnO doping and propertiesGa2O3 and related materialsElectronic and Structural Properties of Oxides
Rebecca A. Zangmeister、Paul Smolenyak、Anthony S. Drager 等 5 位作者2001-10-01Langmuir
We present here a study of the effects of surface modification on the efficiency of transfer of ultrathin Langmuir−Blodgett films of rodlike aggregates of the phthalocyanine (Pc) (2,3,9,10,16,17,23,24-octakis((2-benzyloxy)ethoxy)phthalocyaninato)copper ( 1 ) to gold and silicon substrates. These surface modifications…
Porphyrin and Phthalocyanine ChemistryMolecular Junctions and NanostructuresForce Microscopy Techniques and Applications
Patrick B. Smith、Anne Leugers、Shuhui Kang 等 5 位作者2001-10-01Macromolecular Symposia
Poly(lactic acid) is a new biopolymer material which is marketed by Cargill Dow Polymers under the tradename Nature Works*. One major application for this material is biaxially oriented films for food packaging because it possesses excellent barrier for flavor constituents, deadfold and heat sealability. Shrinkage mus…
Nanocomposite Films for Food Packagingbiodegradable polymer synthesis and propertiesMaterial Properties and Processing
J. Ross Macdonald2001-10-01The Journal of Chemical Physics
Conductivity exhibiting power-law frequency response with an exponent of unity leads to frequency-independent dielectric loss. Such constant-loss (CL) behavior is not physically realizable over a nonzero frequency range, and approximate expressions that have been used to represent it are inconsistent with the Kronig–K…
Material Dynamics and PropertiesIonic liquids properties and applicationsGlass properties and applications
Jin W. Lee、Seung-Woong Lee、Byeongdu Lee 等 4 位作者2001-10-01Macromolecular Chemistry and Physics
A series of random copolyesters were synthesized by the bulk polycondensation of dimethyl terephthalate with ethylene glycol (EG) and trimethylene glycol (TMG) in various compositions. Their composition, molecular weight, and thermal properties were determined. The copolymers containing 22.2 mol-% ≤ TMG ≥ 46.0 mol-% a…
Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis
N. Aktzi、Y. Nir、D. Wang 等 5 位作者2001-10-01Polymer Composites
Abstract Ethylene‐vinyl alcohol copolymer(EVOH)/clay nanocomposites were prepared via a dynamic melt‐intercalation process. The phase morphology and the crystallization behavior of the nanocomposites were investigated, using DSC, DMTA, XRD and SEM. It was found that the treated clay content and dynamic processing time…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and Irradiation
Peter Robert Butzloff、Nandika Anne D’Souza、Teresa D. Golden 等 4 位作者2001-10-01Polymer Engineering and Science
Abstract The objective of this investigation is to determine the effects of montmorillonite layered silicates on the curing kinetics of an epoxy resin. Differential scanning calorimetry was used to probe the changes in reactivity due to the presence of montmorillonite and due to the diamine hardener. The enthalpy of p…
Polymer Nanocomposites and PropertiesEpoxy Resin Curing ProcessesSynthesis and properties of polymers
Jacob Kongsted、Anders Osted、Lasse Jensen 等 5 位作者2001-10-01The Journal of Physical Chemistry B
In the present work, we have calculated the static and frequency-dependent polarizability tensors for a series of single-walled boron nitride nanotubes and compared them with corresponding results for carbon nanotubes. The calculations have been performed by employing a dipole−dipole interaction model based on classic…
Graphene research and applicationsFullerene Chemistry and ApplicationsBoron and Carbon Nanomaterials Research
Laure Bourgeois、C.L. Mendis、B.C. Muddle 等 4 位作者2001-10-01Philosophical Magazine Letters
The quasicrystal structure of primary intermetallic particles found in the ascast microstructure of a permanent mould-cast Mg-8wt%Zn-4wt%Al alloy has been characterized using transmission electron microscopy. Most primary intermetallic particles have an average composition of Mg
Magnesium Alloys: Properties and ApplicationsQuasicrystal Structures and Properties