Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Compounds containing essential Bi, Pb, Te and S are rare in nature. Aleksite, PbBi2Te2S2, is known from less than ten localities worldwide, and the single other recognized mineral, saddlebackite, Pb2Bi2Te2S3, is known only from the type locality, the Boddington Au deposit, Western Australia. Another phase, unnamed PbB…
Intragranular distributions of composition and valent state in sintered Tb-doped ceria have been systematically investigated. Through detailed studies of electron energy loss spectroscopy and energy filtering transmission electron microscopy, both compositional and valent state inhomogeneities of Ce and Tb were confir…
A Hopkinson pressure bar has been modified to measure the dynamic fracture properties of materials at loading rates greater than approximately 10(6) MPa ms. Some fundamental dynamic effects associated with the incident stress pulse, such as stress wave propagation characteristics along the Hopkinson bar and within the…
Adsorption of NO on Fe-exchanged ferrierite is investigated by Fourier transform infrared (FTIR) spectroscopy and ab initio periodic density functional theory (DFT) calculations. The adsorption properties of single Fe species located in the β- and α-site representing the two most stable locations of the extraframework…
The effect of uniaxial and torsional strain on the performance of ballistic carbon nanotube (CNT) Schottky-barrier (SB) field-effect transistors (FETs) is examined by self-consistently solving the Poisson equation and the Schroumldinger equation using the nonequilibrium Green's function formalism. A mode space approac…
Self-organized Ga(Mn)As nanoclusters, embedded in GaAs, were formed during post-growth thermal annealing of Ga1−xMnxAs layers. Structural and magnetic properties of such composites were systematically studied as a function of the annealing temperature. Small (∼3 nm) Mn-rich zinc-blende Mn(Ga)As clusters, coherent with…
The corrosion behaviour of friction stir welded AZ31B-H24 and -T4 Mg alloys in 3·5%NaCl solution was examined based on potentiodynamic test and constant immersion test results. For friction stir welded AZ31B-H24 specimens, the corrosion potential was higher compared with as received (i.e. parent) specimens, while the…
We examine current-less anodization of Si powder grains which are dispersed in a liquid. The grains are prepared red luminescent using a platinum catalyst from a chloroplatinic acid precursor. We also use the procedure to form dispersions of fluorescent Si nanoparticles in the size range of 3–6 nm across by subsequent…
ADVERTISEMENT RETURN TO ISSUECommunication to the...Communication to the EditorNEXTPerforated Block Copolymer Vesicles with a Highly Folded MembraneYongming Chen, Jianzhong Du, Ming Xiong, Hongxia Guo, Hiroshi Jinnai, and Takeshi KanekoView Author Information State Key Laboratory of Polymer Physics and Chemistry, Join…
We have investigated the magnetic properties of four recently synthesized stable TMM-type nitroxide diradicals. Four new diradicals are proposed by tailoring one of the species in such a way that both conjugation and planarity increase. As a remarkable consequence, the intramolecular ferromagnetic exchange interaction…
In n-type diamond doped with phosphorus, exciton properties have been investigated by cathodoluminescence as a function of the phosphorus concentration and the temperature. The homoepitaxial diamond layers were grown by microwave plasma-assisted chemical vapor deposition and doped using a liquid organic precursor of p…
A density functional and Monte Carlo simulation study of end-grafted polymers immersed by simple fluids is presented. The polymer molecules are modeled as freely jointed tangent hard spheres with the end segments linked to the surface. The authors analyze an influence of the chain length, the grafting density, and a n…
The effects of postdeposition annealing at up to 350 °C on the crystallinity and thermal stability of sputter-deposited ZnO films have been investigated in terms of the deposition pressure. The average crystallite size and biaxial film stress of an as-deposited ZnO film is strongly related to the deposition pressure.…
We have studied hydride formation and dissociation in epitaxial and textured Mg films capped with Pd. We grew epitaxial Mg in the (001) orientation on (001) Al2O3 and in the (110) orientation on (320) LiGaO2; and as a reference, textured (001) Mg on glass. Using x-ray diffraction techniques, we studied the formation o…
Thermally bonded structures are amongst the most widely used nonwoven structures, with applications ranging from baby diapers to high performance geotextiles. These structures undergo various modes of deformation during their performance. In this study, the mechanical properties namely, tension, shear, bending and com…
Reliability of inverter-fed motors depends upon partial discharge (PD) behavior of stator windings. A new measuring system of PD inception voltage (PDIV) was developed with repetitive impulses which simulate turn-to-turn voltage of the motors. Using the system, PDIV was measured repeatedly on twisted-pairs of magnet w…
WOxformed by plasmas oxidation shows promising multi-bit/cell resistance memory characteristics (ChiaHua Ho et al., 2007). The simple memory is completely self-aligned, requiring no additional masks and has a small 6F2cell size. In this work we introduce a graded oxide device that is highly reliable (250degC baking fo…
Gold nanoparticles can be conjugated with antibodies or other proteins, and the resulting composite particles will selectively attach to various kinds of biological material. Although exploitation of this for staining microscopy specimens is well known, there has recently been interest in attaching gold nanoparticles…
Ionic liquids represent a unique class of solvents that offer unprecedented versatility and tunability. Nature has developed a wide variety of materials based upon both proteins and polysaccharides. Many of these materials have unique properties that are a function not only of the material identity but are also largel…
Gold nanoparticles used in most experiments (1–10 nm) in gold catalysis show varying degrees of reactivity, with particles below 5 nm generally being more reactive. The origin of this activity is a subject of a number of model experiments and theoretical studies on either clusters of a few atoms in size or extended su…