G. Kedarnath、Liladhar B. Kumbhare、Vimal K. Jain 等 9 位作者2008-04-01Bulletin of the Chemical Society of Japan
Abstract Treatment of a methanolic solution of metal acetate with bis(1-methylimidazolyl)diselenide, [(MeImSe)2], yields complexes of composition [M(OAc)2{(MeImSe)2}] (M = Zn, Cd, or Hg) whereas reactions of [MX2(Me2NCH2CH2NMe2)] (X = Cl or OAc) with sodium 1-methylimidazole-2-selenolate gave selenolate complexes of t…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanocluster Synthesis and Applications
Da In Song2008-04-01Journal of Micro/Nanolithography MEMS and MOEMS
We describe two types of active optical devices developed for use as free-space optical interconnects FSOIs for chip-to-chip communications. The design of both types of devices—membrane and freestanding structures—includes both optical and mechanical components. The optical component contains porous silicon PSi with c…
Photonic and Optical DevicesPhotonic Crystals and ApplicationsSilicon Nanostructures and Photoluminescence
Se Young O、Chan‐Gyu Lee、A. J. Shapiro 等 8 位作者2008-04-01Journal of Applied Physics
We have carried out a systematic study optimizing the MgO growth via preparation and sputtering conditions and underlayer structures. It was found that to prevent water vapor which is detrimental to MgO (200) growth, the chamber pressure needs to be reduced below 10−8Torr. Simple underlayers such as 5nm CoFeB tend to…
Magnetic properties of thin filmsZnO doping and propertiesMetallic Glasses and Amorphous Alloys
V. D. Buchelnikov、М. А. Загребин、Sergey Taskaev 等 6 位作者2008-04-01Bulletin of the Russian Academy of Sciences Physics
Investigations of new ferromagnetic shape-memory Ni-Mn- Z Heusler alloys ( Z = In, Sn, Sb) are reviewed. Experimental data are described and explained on the assumption that these alloys undergo a phase transition from the ferromagnetic to the antiferromagnetic state (metamagnetic transition). The results of theoretic…
Shape Memory Alloy TransformationsHeusler alloys: electronic and magnetic properties
S. Leupold、Touraj Shokati、C. Eberle 等 5 位作者2008-04-01European Journal of Organic Chemistry
Abstract Porphyrin–fullerene dyads with different linkages between the two subunits were synthesized for mimicking photosynthesis. NMR spectra and quantum mechanical calculations show special structural features that should influence light‐induced electron transfer of the photosynthetic process. Starting point of the…
Porphyrin and Phthalocyanine ChemistryFullerene Chemistry and ApplicationsSynthesis and Properties of Aromatic Compounds
Alberto Pérez‐Huerta、Maggie Cusack、Alexander D. Ball 等 5 位作者2008-04-01Journal of Microscopy
Characterization of the nature and distribution of organic components is crucial to understand shell formation in marine invertebrates. Although several techniques can provide detailed information at high spatial resolution, few of them are non-destructive and informative in a larger structural context. We explore the…
Physiological and biochemical adaptationsCalcium Carbonate Crystallization and InhibitionCephalopods and Marine Biology
Itaru Gunjishima、Takashi Inoue、Atsuto Okamoto2008-04-01Japanese Journal of Applied Physics
Fe–O and Fe–V–O nanoparticles (NPs) containing 4.0, 8.1, 12.3, 16.4, and 20.6 at. % V were synthesized by a liquid phase process. Carbon nanotubes (CNTs) were grown from each NP using acetylene as the carbon source, in order to investigate the dependence of CNT diameter on V concentration. The results show that the di…
Carbon Nanotubes in CompositesGraphene research and applicationsTransition Metal Oxide Nanomaterials
Xiang Zhao、Jianbin Xu、Xunjin Zhu 等 4 位作者2008-04-01Rare Metals
Al-20Sn-1Cu powders were prepared by gas atomization in an argon atmosphere with atomizing pressures of 1.1 and 1.6 MPa. The characteristics of the powders are determined by means of dry sieving, scanning electron microscopy (SEM), optical microscopy (OM), and X-ray diffractometry (XRD). The results show that the powd…
Metallic Glasses and Amorphous AlloysAluminum Alloys Composites PropertiesSolidification and crystal growth phenomena
Ruonan Wang、Yichao Wu、Kevin J. Chen2008-04-01Japanese Journal of Applied Physics
We demonstrate a dual-gate (DG) AlGaN/GaN high-electron-mobility transistor (HEMT) structure with enhancement-mode (E-mode) operation. The DG device consists of an E-mode gate and a depletion-mode (D-mode) gate instead of the dual D-mode gate electrodes used in previously reported works; thus no negative voltage suppl…
GaN-based semiconductor devices and materialsSilicon Carbide Semiconductor TechnologiesGa2O3 and related materials
Akihiro Sasahara、Tetsuo Matsumura、G. Nicolaou 等 4 位作者2008-04-01Journal of Nuclear Science and Technology
A chemical isotopic analysis of the actinides and fission products of a high-burnup PWR-UO2 fuel with an average burnup of 60.2 MWd/kgHM was carried out to accumulate extensive nuclide composition data. Furthermore, computational analysis was performed using the integrated burnup calculation code SWAT. The differences…
Nuclear reactor physics and engineeringNuclear Materials and PropertiesNuclear Physics and Applications
Kiyoshi Okuyama、Atsushi Sugimura、Hideo Sunami2008-04-01Japanese Journal of Applied Physics
An optimization of a Ni-silicidation technique for three-dimensional (3-D) structure devices is investigated. For 3-D structure devices, an undesirable deformation of silicide films due to annealing in the deposition chamber occurs at pattern edges. To avoid this deformation, the deposition control of Ni on a 3-D stru…
Semiconductor materials and devicesSilicon Nanostructures and PhotoluminescenceSemiconductor materials and interfaces
P. M. Silenko、A. N. Shlapak、T. В. Томила 等 7 位作者2008-04-01Inorganic Materials
We have studied Fe-catalyzed chemical vapor deposition of silicon carbide nanofibers via thermal decomposition of methyltrichlorosilane, CH 3 SiCl 3 , in hydrogen at temperatures from 1100 to 1350°C and the effects of synthesis temperature and time and gas (CH 3 SiCl 3 + H 2 ) flow rate on the growth rate of SiC nanof…
Advanced ceramic materials synthesisSupercapacitor Materials and FabricationBoron and Carbon Nanomaterials Research
Yu. I. Tarasevich、V. E. Polyakov、Z. G. Ivanova 等 4 位作者2008-04-01Journal of Water Chemistry and Technology
We have found optimal conditions for obtaining an effective sorbent—catalyst based on natural clinoptololite with chemosorbed manganese dioxide for removing Mn2+ ions from water. Using a complex of sorption-analytical, structure-sorption, electron-microscopic methods we have studied the properties of the modifying δ-M…
Minerals Flotation and Separation TechniquesDiatoms and Algae ResearchChemical Synthesis and Characterization
Gao Deli、Yang Xuechang、Zhou Fei 等 4 位作者2008-04-01Plasma Science and Technology
In this study, a new technique of air cleaning by plasma combined with catalyst was proposed, which consisted of electrostatic precipitation, volatile organic compounds (VOCs) decomposition and sterilization. A novel indoor air purifier based on this technique was adopted. The experimental results showed that formalde…
Catalytic Processes in Materials ScienceGas Sensing Nanomaterials and SensorsPlasma Applications and Diagnostics
Vladimir Bermanec、Nenad Tomašić、Goran Kniewald 等 5 位作者2008-04-01The Canadian Mineralogist
Nioboaeschynite-(Y), with ideal chemical formula [(Y, Ln), Ca, Th](Nb, Ta, Ti, Fe)2O6, is a new member of the aeschynite group. It was discovered at the Bear Lake Diggings, Lot 9, conc. X, Monmouth Township, Haliburton County, near Gooderham, Ontario, Canada. It occurs as subhedral crystals up to 1 cm in size, in asso…
Radioactive element chemistry and processingNuclear materials and radiation effectsMineralogy and Gemology Studies
Э. С. Горкунов、С. В. Гладковский、С. М. Задворкин 等 5 位作者2008-04-01The Physics of Metals and Metallography
A complex of magnetic parameters of two-phase (γ+ε) and austenitic Fe-Mn and Fe-Mn-Cr steels subjected to elastic deformation by uniaxial tension and torsion at room temperature has been studied. Regularities of changes in both the magnetic properties of the steels with different composition and the deformation stabil…
Microstructure and Mechanical Properties of SteelsMagnetic Properties and ApplicationsInduction Heating and Inverter Technology
А. С. Чаус、Ф. И. Рудницкий2008-04-01Journal of Friction and Wear
The results are analyzed of comparative durability tests of metal-cutting tools of various purposes and standard dimensions made of cast and rolled high-speed steels of identical chemical composition and heat treatments. A relationship is shown between the tool material structure, the character of the wearing, and the…
Metal Alloys Wear and PropertiesEngineering Technology and MethodologiesEngineering and Environmental Studies
Shin‐Shueh Chen2008-04-01Optical Engineering
Growth of conical particles in carbon films deposited on silica glass fibers prepared by thermal chemical vapor deposition is investigated. The results show that the size and number of conical particles on the silica glass fiber increase with the film thickness and deposition temperature, but this effect is reduced wh…
Carbon Nanotubes in CompositesSurface Modification and SuperhydrophobicityDiamond and Carbon-based Materials Research
А. С. Басаев、Boris B. Bokhonov、О. Ф. Демиденко 等 12 位作者2008-04-01Nanotechnologies in Russia
This paper reports on the results of a complex investigation of the crystal structure, the composition, and the specific magnetization of magnetically functionalized multiwall carbon nanotubes. The carbon nanotubes are synthesized by the high-temperature pyrolysis of liquid hydrocarbon p -xylene C 8 H 10 in a mixture…
Carbon Nanotubes in CompositesChemistry and Chemical EngineeringNanotechnology research and applications
Donald A. Jaworske、Sara E. Kline2008-04-01NASA STI Repository (National Aeronautics and Space Administration)
White thermal control coatings capable of long term performance are needed for Fission Surface Power (FSP) where heat from a nuclear reactor placed on the surface of the Moon must be rejected to the environment. The threats to thermal control coating durability on the lunar surface are electrons, protons, and ultravio…
Nuclear Physics and ApplicationsChemical and Physical Properties of MaterialsSpacecraft and Cryogenic Technologies