Wenyong Lin、Andrew A. Herzing、Christopher J. Kiely 等 4 位作者2008-03-26The Journal of Physical Chemistry C
The strength of PtOx−support and Pt−support interactions was investigated for supported PtOx/SiO 2, PtOx/Al 2 O 3, and PtOx/CeO 2 catalysts with time-resolved in situ Raman/IR spectroscopy and scanning transmission electron microscopy (STEM). Raman spectroscopy (and STEM−X-ray energy-dispersive spectoscopy, XEDS) was…
Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions
Justyn Jaworski、Digvijay Raorane、Jin Hoe Huh 等 5 位作者2008-03-26Langmuir
Susceptibility of chemical sensors to false positive signals remains a common drawback due to insufficient sensor coating selectivity. By mimicking biology, we have demonstrated the use of sequence-specific biopolymers to generate highly selective receptors for trinitrotoluene and 2,4-dinitrotoluene. Using mutational…
Mass Spectrometry Techniques and ApplicationsDiatoms and Algae ResearchCephalopods and Marine Biology
Stacy E. Snyder、Slava V. Rotkin2008-03-26arXiv
High intrinsic mobility and small, biologically-compatible size make single-walled carbon nanotubes (SWNTs) in demand for the next generation of electronic devices. Further, the wide range of available bandgaps due to changes in diameter and symmetry give SWNTs greater versatility than traditional semiconductors. Sing…
Materials Science
Hua-Yun Geng、Ying Chen、Yasunori Kaneta 等 6 位作者2008-03-26Physical Review B
A comprehensive investigation on point defects and their clustering behavior in nonstoichiometric uranium dioxide $\mathrm{U}{\mathrm{O}}_{2\ifmmode\pm\else\textpm\fi{}x}$ is carried out using the $\mathrm{LSDA}+\mathrm{U}$ method based on density functional theory. Accurate energetic information and charge transfers…
Nuclear reactor physics and engineeringRadioactive element chemistry and processingNuclear Materials and Properties
Michael P. Surh、Jess B. Sturgeon、Wilhelm G. Wolfer2008-03-26arXiv
A novel computational treatment of dense, stiff, coupled reaction rate equations is introduced to study the nucleation, growth, and possible coalescence of cavities during neutron irradiation of metals. Radiation damage is modeled by the creation of Frenkel pair defects and helium impurity atoms. A multi-dimensional c…
Materials Science
Dipti Banerjee2008-03-26arXiv
In this letter we have pointed out that frustration in spin glass is realized through the Berry phase due to the conflict between the spin ordering in the course of parallel transport of spinor. We have came to the point that the Berry phase depicting the chiral change of helicity of a quantized spinor is prominent on…
Mesoscale and Nanoscale PhysicsMaterials Science
Alexander A. Tsirlin、R. Nath、C. Geibel 等 4 位作者2008-03-26Physical Review B
Magnetic properties of the silver vanadium phosphate ${\mathrm{Ag}}_{2}\mathrm{V}\mathrm{O}{\mathrm{P}}_{2}{\mathrm{O}}_{7}$ are studied by means of magnetic susceptibility measurements and electronic structure calculations. In spite of the layered crystal structure suggesting one-dimensional or two-dimensional magnet…
Crystal Structures and PropertiesPolyoxometalates: Synthesis and ApplicationsAdvanced Condensed Matter Physics
Eric C. Le Ru、Matthias Meyer、E. Blackie 等 4 位作者2008-03-26Journal of Raman Spectroscopy
Abstract In this paper, we discuss some advanced theoretical aspects of electromagnetic enhancement factors (EFs) in surface‐enhanced Raman scattering (SERS). We focus in particular on the influence of surface selection rules (SSRs) on SERS EFs at hot spots, and the determination of SERS depolarization ratios. Both as…
Gold and Silver Nanoparticles Synthesis and ApplicationsElectrochemical Analysis and ApplicationsNanocluster Synthesis and Applications
S. Seki、Yuichi Yamasaki、Minoru Soda 等 6 位作者2008-03-26Physical Review Letters
Measurements of polarized neutron scattering were performed on a S=1/2 chain multiferroic LiCu2O2. In the ferroelectric ground state with the spontaneous polarization along the c axis, the existence of transverse spiral spin component in the bc plane was confirmed. When the direction of electric polarization is revers…
Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics
Carole Daiguebonne、Nicolas Kerbellec、Olivier Guillou 等 11 位作者2008-03-26Inorganic Chemistry
Reaction in water between rare earth ions (Ln = Y, La-Tm, except Pm) and the sodium salt of terephthalic acid leads to a family of lanthanide-based coordination polymers of general formula [Ln2(C8H4O4)3(H2O)4] n with Ln = La-Tm or Y. The isostructurality of the compounds with the previously reported Tb-containing poly…
Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesLanthanide and Transition Metal Complexes
M. Schirra、R. Schneider、Anton Reiser 等 10 位作者2008-03-26Physical Review B
Bulk ZnO samples, epitaxially grown ZnO layers, and ZnO nanostructures frequently exhibit a characteristic emission band at $3.31\text{\ensuremath{-}}\mathrm{eV}$ photon energy whose origin is controversially discussed in the literature. Partly, this omnipresent band is ascribed to $(e,{A}^{0})$ transitions of conduct…
ZnO doping and propertiesPerovskite Materials and ApplicationsGa2O3 and related materials
Hai-Hu Wen、Gang Mu、Lei Fang 等 5 位作者2008-03-26OpenAlex
By partially substituting the tri-valence element La with di-valence element Sr in LaOFeAs, we introduced holes into the system. For the first time, we successfully synthesized the hole-doped new superconductors (La 1- x Sr x )OFeAs. The maximum superconducting transition temperature at about 25 K was observed at a do…
Iron-based superconductors researchSuperconductivity in MgB2 and AlloysSAS software applications and methods
Kenji Furuta、Yoshinori Tanizawa、Hiroaki Horiuchi 等 5 位作者2008-03-25Chemistry Letters
Abstract The mechanism of the photochemically induced nucleation of lysozyme was investigated. Radical cations and neutral radicals of tryptophan residue of lysozyme were observed by transient absorption measurements. The radical cation was found to be in equilibrium with the neutral radical, and the pKa of the radica…
Protein Structure and DynamicsEnzyme Structure and FunctionCultural Heritage Materials Analysis
Prosenjit Chattopadhyay、Rekha Nagpal、Pramod S. Pandey2008-03-25Australian Journal of Chemistry
The recognition properties of 7,8-dimethyl flavin analogues by bile acid-based receptors that contain 2,6-diaminopyridine and the dioctylamide of 2,6-diaminopyridine in CHCl3 were determined. The results show that the bile acid-based receptors bind 7,8-dimethyl flavin analogues less effectively as compared to 7,8-unsu…
DNA and Nucleic Acid ChemistryMolecular Sensors and Ion DetectionPhotochromic and Fluorescence Chemistry
Takahiro Matsumoto、Yoichiro Neo、Hidenori Mimura 等 4 位作者2008-03-25Physical Review E
A method of determining the physisorption energy of molecules on carbon nanostructures using field emission current fluctuation measurements is presented. A stochastic model, broken into birth and death processes, was applied to analyze the current fluctuation and determine the physisorption energy. This method yields…
Carbon Nanotubes in CompositesGraphene research and applicationsMolecular Junctions and Nanostructures
Juri Melnik、Jing‐Li Luo、K. T. Chuang 等 4 位作者2008-03-25The Open Energy & Fuels Journal
Co-doping of yttrium doped mixed barium cerate/zirconate perovskite (BCZY) with small amounts of Pr (BCZYP) substantially increases electrical conductivity while retaining structural and chemical stability. BCZYP is pre- dominantly a proton conductor at temperatures up to 600-650˚C, whereas it is a mixed proton/oxide…
Advancements in Solid Oxide Fuel CellsFuel Cells and Related MaterialsSolid-state spectroscopy and crystallography
K Yamada、Shigeyuki Komura2008-03-25Journal of Physics Condensed Matter
In multi-component soft matter, two microphase separated ordered phases such as lamellar and hexagonal phases coexist in equilibrium. We call such a macroscopic phase separation ‘order–order phase separation’. Based on a coarse grained single order parameter Ginzburg–Landau free energy, we investigate the dynamics of…
Surfactants and Colloidal SystemsBlock Copolymer Self-AssemblyPickering emulsions and particle stabilization
Hong Li、Qing Zhang、Nicola Marzari2008-03-25Nanotechnology
The influences of trapped charges on carrier transport in carbon nanotubes (CNTs) are studied using CNT field-effect transistors with a partial top-gate and a global back-gate. Trapped charges induced by the global back-gate voltage sweeping (± 20 V) promote the device from 'ON' states to near 'OFF' states at zero gat…
Carbon Nanotubes in CompositesGraphene research and applicationsAdvancements in Semiconductor Devices and Circuit Design
A. Djelloul、Khadidja Bouzid、Fahima Guerrab2008-03-25TURKISH JOURNAL OF PHYSICS
Zinc oxide (ZnO) thin films have been prepared by ultrasonic Spray Pyrolysis (USP) technique using zinc acetate dihydrate dissolved in methanol, ethanol and deionized water. A thermodynamic analysis for the growth of ZnO thin films from zinc acetate and water vapor has been made. The evolution of the preferred crystal…
ZnO doping and propertiesnanoparticles nucleation surface interactions
Lijuan Li、Yueyuan Xia、Mingwen Zhao 等 6 位作者2008-03-25Nanotechnology
The geometric structure and electronic structure of an imogolite nanotube have been studied using density functional theory (DFT). The calculation results indicate that the deformation of the material leads to structural electric charges on the tube wall. This hydrous aluminosilicate single-walled nanotube is a wide g…
Carbon Nanotubes in CompositesClay minerals and soil interactionsChemical and Physical Properties of Materials