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Reversible Modulation of Quantum Dot Photoluminescence Using a Protein- Bound Photochromic Fluorescence Resonance Energy Transfer Acceptor

Igor L. Medintz、Scott A. Trammell、Hedi Mattoussi 等 4 位作者2003-12-16Journal of the American Chemical Society

Multiple copies ( approximately 20) of Escherichia coli maltose binding protein (MBP) were coordinated to luminescent semiconductor quantum dots (QDs) via a C-terminal oligohistidine segment. The MBP was labeled with a sulfo-N-hydroxysuccinimide-activated photochromic BIPS molecule (1',3-dihydro-1'-(2-carboxyethyl)-3,…

Advanced biosensing and bioanalysis techniquesQuantum Dots Synthesis And PropertiesPhotochromic and Fluorescence Chemistry

Distribución temporal del fitoplancton y epiliton en el río Piedra Blanca (Córdoba, Argentina)

María Elisa Luque2003-12-15Limnetica

El objetivo de esta investigacin es analizar los patrones temporales en la composicin y abundancia de las comunidades del fitoplancton y epiliton en el ro Piedra Blanca, as como la influencia de los factores ambientales sobre los patrones biolgicos durante un ciclo anual. Para este estudio se recolectaron mensualmente…

Aquatic Ecosystems and Phytoplankton DynamicsDiatoms and Algae ResearchMediterranean and Iberian flora and fauna

The influence of Gd on magnetic and electric transport properties in La0.67 xGdxSr0.33CoO3

Wei Tong、Liangbing Hu、Hong Zhu 等 5 位作者2003-12-15Journal of Physics Condensed Matter

The magnetic and transport properties of the polycrystalline samples La 0.67− x Gd x Sr 0.33 CoO 3 ( ) are investigated. On incorporation of Gd, the Curie temperature T C progressively shifts to lower temperature, and the magnetization increases rapidly below 60 K with decreasing temperature. This increase of magnetiz…

Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics

Enhancement of the1H NMR Relaxation Rate at Low Temperatures and Development of Antiferromagnetic Spin Fluctuations of π-Electrons in Superconducting λ-(BETS)2GaCl4

Shigeru Takagi、Daisuke Maruta、H. Uozaki 等 10 位作者2003-12-15Journal of the Physical Society of Japan

Extending previous 77 Se NMR studies [J. Phys. Soc. Jpn. 72 (2003) 483], the microscopic magnetic properties of superconducting (\(T_{\text{C}}\cong 5{\mbox{--}}6\) K) λ-(BETS) 2 GaCl 4 [BETS = bis(ethylenedithio)tetraselenafulvalene] have been investigated by 1 H NMR in the normal state between 7.1 and 140 K on rando…

Perovskite Materials and ApplicationsMagnetism in coordination complexesOrganic and Molecular Conductors Research

Dynamics of Phase Separation in Confined Two-component Fluid Membranes

Hirofumi Wada2003-12-15Journal of the Physical Society of Japan

We investigate the dynamics of phase separation in two-component fluid membranes confined between parallel and rigid bounding plates. Through numerical simulation, we find dramatic slow coarsening of the order parameter field within the simulation time. In particular, a microphase separation is obtained as an equilibr…

Lipid Membrane Structure and BehaviorBlock Copolymer Self-AssemblyMicro and Nano Robotics

(LiI)2Li3SbS3: A mixed Alkali Metal Halide Thioantimonate with a novel Tetrahedron Network

Arno Pfitzner、Christian Preitschaft、Franz Rau2003-12-15Zeitschrift für anorganische und allgemeine Chemie

Abstract (LiI) 2 Li 3 SbS 3 was prepared by solid‐state reaction of stoichiometric amounts of LiI, Li, Sb, and S in the ratio 2 : 3 : 1 : 3. The product is air and moisture sensitive. The crystal structure was determined from single crystals at room temperature. Colourless to pale yellow (LiI) 2 Li 3 SbS 3 crystallize…

Crystal Structures and PropertiesAdvanced Condensed Matter PhysicsInorganic Chemistry and Materials

Raman Study of the Annealing Effect of Low-Density Glassy Waters

Yoshiharu Suzuki、Osamu Mishima2003-12-15Journal of the Physical Society of Japan

We make three kinds of low density glassy waters, low-density amorphous ice (LDA), amorphous solid water (ASW) and hyperquenched glassy water (HGW), and examine the changes in their Raman spectra of OH-stretching vibrational regions by annealing at 1 bar. The irreversible change in Raman profile for LDA is observed ab…

Material Dynamics and PropertiesGlass properties and applicationsSpectroscopy and Quantum Chemical Studies

Lithium Carbonate Flux Effects on the Luminescence Properties of Europium-doped Lanthanum Oxycarbonate Phosphor

Shinji Tamura、Kazuhiko Koyabu、Toshiyuki Masui 等 4 位作者2003-12-15Chemistry Letters

Abstract Lithium carbonate flux was introduced in the preparation of La2O2CO3: Eu3+ oxycarbonate phosphor particles to improve the photoluminescence intensities. The flux treatment brought increasing in the crystallinity of oxycarbonate phosphor accompanying the phase transition from the two-phase mixture of tetragona…

Luminescence Properties of Advanced MaterialsGas Sensing Nanomaterials and SensorsSolid-state spectroscopy and crystallography

THREE DIMENSIONAL COMPOSITE STRUCTURES IN THE FORE-WING OF BEETLES

Jinxiang Chen、Qing-Qing Ni2003-12-15Fuhe cailiao xuebao

In order to develop the light-weight biological composite structures, the fore wing structures of beetles, Allomyrina dichotoma, were investigated. As a result, the structural models for both fore-wing of the beetle and trabecular structure were established: (1) the allomyrina dichotoma fore-wing is of sandwich plate…

Additive Manufacturing and 3D Printing TechnologiesTextile materials and evaluationsMaterial Properties and Applications

Stability of martensitic domains in the ferromagnetic alloy Ni2MnGa: a mechanism for shape memory behaviour

P. J. Brown、B. R. Dennis、J. Crangle 等 8 位作者2003-12-15Journal of Physics Condensed Matter

The martensitic phase transition in Ni2MnGa, fundamental to its shape memory behaviour, can be described by two successive 110 type shears leading to 36 possible different orientations for the axes of the pseudo-tetragonal martensitic phase. The distribution and orientation of the domains formed on cooling Ni2MnGa int…

Shape Memory Alloy Transformations

Non‐destructive analysis of ultrathin dielectric films

R. Champaneria、P. Mack、R.G. White 等 4 位作者2003-12-15Surface and Interface Analysis

Abstract Using angle‐resolved x‐ray photoelectron spectroscopy (ARXPS) it is possible to determine thickness, composition and depth distribution information for ultrathin samples in the region of ∼5–10 nm. With ARXPS determining both quantitative elemental information and chemical state information, it provides chemic…

Semiconductor materials and devicesElectron and X-Ray Spectroscopy TechniquesElectronic and Structural Properties of Oxides

Crystallographic and magnetic structure of the Sr2MnReO6 double perovskite

Guerman Popov、Maxim V. Lobanov、E. V. Tsiper 等 8 位作者2003-12-15Journal of Physics Condensed Matter

Crystallographic and magnetic structure of the Sr2MnReO6 double perovskite, Guerman Popov, Maxim V Lobanov, Eugene V Tsiper, Martha Greenblatt, El’ad N Caspi, Alexandre Borissov, Valery Kiryukhin, Jeffrey W Lynn

Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics

Structural and electronic properties of epitaxial V2O3thin films

Björn Sass、Christian Tusche、W. Felsch 等 6 位作者2003-12-15Journal of Physics Condensed Matter

Thin films of V 2 O 3 with thickness 4–300 nm were grown on -oriented sapphire substrates by reactive dc magnetron sputtering. X-ray diffraction, pole figure measurements and scanning tunnelling microscopy show high crystallinity and epitaxy to the substrate with a faceted surface structure, and the absence of strain.…

ZnO doping and propertiesTransition Metal Oxide NanomaterialsElectronic and Structural Properties of Oxides

Electrochemical polymerization of fluoro‐ and chloro‐substituted anilines and copolymers with aniline

Yücel Şahin、Sabriye Perçin Özkorucuklu、Mutlu Şahin 等 4 位作者2003-12-15Journal of Applied Polymer Science

Abstract Poly(2‐fluroaniline) and poly(2‐chloroaniline) were synthesized by an electrochemical method in an acetonitrile solution containing tetrabutylammonium perchlorate and perchloric acid. Also, the electrochemical copolymerization of aniline with 2‐fluroaniline and 2‐chloroaniline was carried out in the same medi…

Electrochemical sensors and biosensorsConducting polymers and applicationsElectrochemical Analysis and Applications

Role of the rare-earth ion on the strength of the ferromagnetic exchange interactions in RMn0.5M0.5O3(M = Co, Ni)

V. L. Joseph Joly、S. K. Date、P. A. Joy2003-12-15Journal of Physics Condensed Matter

The role of the trivalent rare-earth ion on the paramagnetic to ferromagnetic transition temperature (Tc) of the substituted perovskite-type rare-earth (R) manganese oxides, RMn0.5Co0.5O3 and RMn0.5Ni0.5O3 (R = Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er and Yb), is compared. For a particular R3+ with larger ionic size, the Tc of…

Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics

Comparison of Mercury Removal Efficiency from a Simulated Exhaust Gas by Several Types of TiO2 under Various Light Sources

Yong Gyu Lee、Jinwon Park、Jung‐Hyun Kim 等 7 位作者2003-12-15Chemistry Letters

Abstract A removal efficiency of vapor-phase elemental mercury by TiO2 irradiated using various light sources was investigated. The effective surface area of TiO2 for Hg adsorption and UV radiation was increased by packing the adsorption bed with mixture of TiO2 and glass beads. A rotating-type reactor was specially d…

Catalytic Processes in Materials Science

Room temperature preparation of novel Cu2 xSe nanotubes in organic solvent

Yang Jiang、Yue Wu、Bo Xie 等 5 位作者2003-12-15Nanotechnology

A compound with a non-layered structure composed of Cu 2− x Se nanotubes was prepared in a room temperature redox reaction in ethylene diamine solution. The product was characterized by x-ray diffractometry, transmission electron microscopy, high resolution transmission electron microscopy, and x-ray photoelectron spe…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanowire Synthesis and Applications

Maleic anhydride grafted polypropylene as a coupling agent for polypropylene composites filled with ink‐eliminated waste paper sludge flour

Xiuying Qiao、Yong Zhang、Yong Zhang 等 5 位作者2003-12-15Journal of Applied Polymer Science

Abstract Ink‐eliminated sludge flour (IESF), a waste residue from the recycling treatment of waste paper, is a promising new kind of filler for thermoplastic polymers with a good price/performance ratio and advantages for environmental protection. In this study, high‐impact polypropylene (PP) and maleic anhydride graf…

Polymer crystallization and propertiesNatural Fiber Reinforced Compositesbiodegradable polymer synthesis and properties

A novel technique for fabricating SMA/CFRP adaptive composites using ultrathin TiNi wires

Ya Xu、Kazuhiro Otsuka、Nobuyuki Toyama 等 6 位作者2003-12-15Smart Materials and Structures

Adaptive composites, which consist of carbon fiber reinforced plastics (CFRP) and shape memory alloy (SMA) wires, have attracted much attention recently in the aerospace industry, etc. In the fabrication of such adaptive composites, CFRP and SMA wires must be cured at specific temperatures, either at 130 or 180 °C dep…

Composite Structure Analysis and OptimizationShape Memory Alloy Transformations

Precise Structure Analysis Consistent with Mössbauer Quadrupole Effect: A Case of the Ordered Double Perovskites Sr2FeMO6(M = Mo and Re)

Shin Nakamura、Kenichi Oikawa2003-12-15Journal of the Physical Society of Japan

We propose the use of Mössbauer quadrupole effect as a sensitive probe to determine structural feature precisely. This method has been applied, together with the high-resolution neutron powder diffraction measurements, to the structure analysis of the ordered double perovskites Sr <sub>2</sub>FeMoO<sub>6</sub> and Sr<…

Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics