Thomas Devic、Josep Bertran、Benoît Domercq 等 7 位作者2001-10-22New Journal of Chemistry
The synthesis, X-ray crystal structure and electrochemical properties of 3-cyano-3′,4′-ethylenedithiotetrathiafulvalene (EDT-TTF-CN, 1) are described together with electrocrystallisation experiments in the presence of various halogenated anions, I3−, FeBr4−, InBr4−, AuBr4−, Mo6Br142−, Mo6Cl8Br62−. X-Ray crystal struct…
Magnetism in coordination complexesOrganic and Molecular Conductors ResearchInorganic Chemistry and Materials
V. Nagarajan、C. S. Ganpule、Hua Li 等 7 位作者2001-10-22Applied Physics Letters
We have investigated the polydomain formation in 100–200-nm-thick PbZr0.2Ti0.8O3 epitaxial thin films on vicinally cut (100) oriented SrTiO3 substrates. Our results show that there is a preferential location of the nucleation of the a domains along the step edges of the underlying substrate. By piezo-response microsco…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesElectronic and Structural Properties of Oxides
Patrick Roland Abbott、Edward Sosa、D. E. Golden2001-10-22Applied Physics Letters
The work function of hydrogen-terminated polycrystalline diamond films deposited by electrophoresis on molybdenum was studied using ultraviolet photoelectron spectroscopy with 21.2 eV photons for average grain sizes ranging from 0.32 to 108 μm. The work function has a maximum of about 5.1 eV at 0.32 μm, then decreases…
Diamond and Carbon-based Materials ResearchElectronic and Structural Properties of OxidesAdvanced Materials Characterization Techniques
Karuna Kar Nanda、S.N. Sahu2001-10-22Applied Physics Letters
Self-assembled heterojunction was fabricated by means of an electrochemical deposition of PbS nanoparticles on indium tin oxide substrate. The current–voltage and capacitance–voltage studies confirmed the formation of a heterojunction. A large current and large capacitance were observed in the case of a device from pa…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsMolecular Junctions and Nanostructures
Janek Peterson、A Ebber、Veiko Allikmaa 等 4 位作者2001-10-22Proceedings of the Estonian Academy of Sciences Chemistry
Generations 0 through 5 of ethylenediamine core poly(amidoamine) dendrimers were synthesized. The half-generations of the dendrimeric compounds were purified on silica gel and/or Sephadex LH-20. Capillary zone electrophoresis was applied to characterize the homogeneity of the individual generations.
RNA Interference and Gene DeliveryChemical Synthesis and AnalysisDendrimers and Hyperbranched Polymers
Beth Parks、Joseph Loomis、Evan Rumberger 等 5 位作者2001-10-22Physical review. B, Condensed matter
We use time-domain terahertz spectroscopy to measure the position and linewidth of single-photon transitions in ${\mathrm{Mn}}_{12}$-acetate. This linewidth is compared to the linewidth measured in tunneling experiments. We conclude that local magnetic fields (due to dipole or hyperfine interactions) cannot be respons…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies
Andrew B. Schofield2001-10-22Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
The possibility of binary hard-sphere colloids crystallizing with the cesium chloride (CsCl) structure was examined experimentally using poly (methyl methacrylate) particles dispersed in organic solvents. Towards this end, two dispersions were prepared that contained particles with a radius ratio alpha=R(B)/R(A), wher…
Material Dynamics and PropertiesIonic liquids properties and applicationsThermal and Kinetic Analysis
I. A. Santos、D. Garcia、J. A. Eiras 等 5 位作者2001-10-22Applied Physics Letters
Field-induced sharp ferroelectric phase transition was observed in Sr0.66Ba0.34Nb2O6 single crystals. The peaks of the real and imaginary parts of dielectric permittivity arise upon cooling under weak dc bias electric fields and subsequently heating under zero fields or upon cooling under zero fields and subsequently…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAcoustic Wave Resonator Technologies
Sonja Hausmann、André F. Lotter2001-10-22Freshwater Biology
1. The morphologically complex taxon Cyclotella comensis Grunow had no clear relationship with environmental parameters in a study using sediment surface samples from the Swiss Alps. The morphological heterogeneity of the taxon was investigated by applying a principal component analysis (PCA) to 9000 presence/absence…
Geology and Paleoclimatology ResearchAquatic Ecosystems and Phytoplankton DynamicsDiatoms and Algae Research
Ruimin Xie、Debao Xiao、Hongbing Fu 等 6 位作者2001-10-22New Journal of Chemistry
Poly(vinyl alcohol) (PVA) was added water suspension of perylene nanocrystals prepared through the reprecipitation method. The growth of the nanocrystals can be sustained by the protecting effect of PVA. At the same time, the monomer emission of perylene nanocrystals is enhanced and the lifetime of the excited state i…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsLuminescence and Fluorescent Materials
D. Kumar、Hao Zhou、T. K. Nath 等 5 位作者2001-10-22Applied Physics Letters
Nanocrystalline nickel particles were embedded in amorphous alumina and crystalline TiN matrices using a pulsed-laser deposition process to investigate the effect of texturing on magnetic properties of nickel nanocrystallites. The crystalline quality of both the matrix and magnetic particles were investigated by cross…
ZnO doping and propertiesMetallic Glasses and Amorphous AlloysSemiconductor materials and interfaces
Sarani Zakaria、Hazira Hamzah、Julie Andrianny Murshidi 等 4 位作者2001-10-22Advances in Polymer Technology
Abstract Oil palm fiber empty fruit bunch (EFB) was chemically treated with benzyl chloride (bz‐efb) and ethylene oxide (E‐efb) at different reaction temperatures (100 and 110°C for bz‐efb; 55, 85, and 92°C for E‐efb). The SEM micrographs of bz‐efb and E‐efb samples showed tremendous changes in morphological structure…
Advanced Cellulose Research StudiesLignin and Wood ChemistryOil Palm Production and Sustainability
Daniele Faccio、Valerio Pruneri、Peter G. Kazansky2001-10-22Applied Physics Letters
We study the temporal evolution of both the second-order nonlinear coefficient and of the nonlinear thickness in thermally poled silica-glass slides by using a high-resolution all-optical technique. A time delay in the nonlinearity formation is observed, followed by an increase to a maximum, and a final decrease. The…
Glass properties and applicationsPhotonic Crystals and ApplicationsPhotorefractive and Nonlinear Optics
Sebastian Rast、Pascal H. Fries、E. Bélorizky 等 6 位作者2001-10-22The Journal of Chemical Physics
The time correlation functions of the electronic spin components of a metal ion without orbital degeneracy in solution are computed. The approach is based on the numerical solution of the time-dependent Schrödinger equation for a stochastic perturbing Hamiltonian which is simulated by a Monte Carlo algorithm using dis…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies
John T. L. Thong、C. H. Oon、W. K. Eng 等 5 位作者2001-10-22Applied Physics Letters
Arrays of vertically aligned carbon nanotubes (CNTs) were grown on a patterned sputtered cobalt film by chemical vapor deposition from ethylenediamine at 900 °C. Each square array comprises a moderate density of nanotubes with an average height of 90 μm covering a total area of 3.6×10−3 cm2. Field emission measurement…
Carbon Nanotubes in CompositesDiamond and Carbon-based Materials ResearchMechanical and Optical Resonators
Toshiaki Fujino、Mitsuhiro Katayama、Katsuhiko Inudzuka 等 6 位作者2001-10-22Applied Physics Letters
The change in surface composition and structure of a rutile TiO2(110) surface during thermal annealing in an ultrahigh vacuum was studied by coaxial impact–collision ion scattering spectroscopy and time-of-flight elastic recoil detection analysis. When the clean TiO2(110) surface with a 1×1 bridging-oxygen-rows struct…
Diamond and Carbon-based Materials ResearchIon-surface interactions and analysisElectronic and Structural Properties of Oxides
E. V. Tsiper、Z. G. Soos2001-10-22Physical review. B, Condensed matter
We present an approach to electronic polarization in molecular solids treated as a set of quantum systems interacting classically. Individual molecules are dealt with rigorously as quantum-mechanical systems subject to classical external fields created by all other molecules and, possibly, external sources. Self-consi…
Nonlinear Optical Materials ResearchPhotochemistry and Electron Transfer StudiesChemical Thermodynamics and Molecular Structure
Alexey Eremin、Siegmar Diele、G. Pelzl 等 7 位作者2001-10-22Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
We report unambiguous experimental evidence for an achiral orthogonal biaxial smectic-A phase which exhibits antiferroelectric switching behavior. The evidence is based on x-ray-diffraction measurements, texture observation, and the results of dielectric and electro-optical measurements.
Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsPlant Reproductive Biology
Aurora E. Clark、Ernest R. Davidson2001-10-22The Journal of Chemical Physics
Equations are proposed for computing from ab initio wave functions quantities like 〈SA⋅SB〉, which appear in the Heisenberg model Hamiltonian of magnetism. These equations are based on projection operators derived from Löwdin orthogonalization. They result in local spin operators SA which obey the definition of angular…
Magnetism in coordination complexesAdvanced NMR Techniques and ApplicationsMolecular spectroscopy and chirality
Yuichi Shimakawa、Yoshimi Kubo、Y. Tauchi 等 7 位作者2001-10-22Applied Physics Letters
The crystal structures of Bi4Ti3O12 and Bi3.25La0.75Ti3O12 were refined by neutron powder diffraction. Large structural distortions were revealed, and ferroelectric polarizations along the a and c axes were calculated from the displacements of the constituent ions. In Bi3.25La0.75Ti3O12, La atoms substitute for Bi ato…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis