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。
Macroporous polysilsesquioxane monoliths have been synthesized from biphenylene-bridged alkoxysilane via the sol−gel transition and concurrent phase separation both induced by the polycondensation reaction. The obtained polysilsesquioxane gels have been subsequently converted to macroporous SiC/C composites by the car…
The percolation threshold of single-walled carbon nanotubes (SWCNTs) introduced into polystyrene (PS) via a latex-based route has been reduced by using conductive surfactants. The use of the conductive polymeric latex, poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), in conjunction with SWCNTs lea…
Extensive ab initio density-functional calculations were performed to investigate the structural, magnetic, and electronic properties of systems comprising ${\text{Ni}}_{n}$ and ${\text{Fe}}_{n}$ nanostructures $(n=1--4)$ adsorbed on hydrogen-passivated zigzag graphene nanoribbons (GNRs). Both Ni and Fe atoms were mos…
Carbon nanotubes show great potential in developing solar cells with enhanced power conversion efficiency, yet the device stability has not been thoroughly studied. Here, we show how the interaction between components in a nanotube-based hybrid solar cell could cause a significant change in output voltage and fill fac…
A near UV excitable phosphor Sr(2.85)Eu(0.1)Al(0.9)In(0.1)O(4-alpha)F(1-delta) was made by reducing as-made Sr(2.85)Eu(0.1)Al(0.9)In(0.1)O(4)F. This material reveals defect-induced broad-band photoluminescence emissions centered at 600 nm and a line emission at 619 nm due to the(5)D(0) --> (7)F(2) transition of the Eu…
The wetting by perfluoromethylcyclohexane of a well-defined silicon grating with a channel width of 16 nm has been studied using transmission small angle x-ray scattering. Prefilling, capillary filling, and postfilling wetting regimes have been identified. A detailed comparison of the data with theory reveals the impo…
Hydrogen embrittlement is a pervasive mode of degradation in many metallic systems that can occur via several mechanisms. Here, the competition between dislocation emission and cleavage at a crack tip is evaluated in the presence of H. At this level, embrittlement is predicted when the critical stress intensity requir…
Catalytic properties of Ag/Al(2)O(3) for complete oxidation of benzene with ozone at 295-373 K were studied and compared with those of Mn/Al(2)O(3). At the reaction temperature of 295 K, the Ag/Al(2)O(3) catalysts showed selectivity to CO(x) (ca. 80%) higher than that of the oxide of metals in the first transition ser…
Models intended to predict interfacial transport often rely on the principle of detailed balance when formulating the interfacial carrier transmission probability. However, assumptions invoked significantly impact predictions. Here, we present six derivations of the transmission probability, each subject to a differen…
Characterization methods for the structural investigation of biotemplates for nanodevices remain widely unexplored, despite the fact that biotemplating methods for nanodevice fabrication are becoming more widespread. In this study several techniques are used to characterize the morphology and 3D distribution of silver…
A spin-polarized donor, BTBN, which is a dibromotetrathiafulvalene derivative containing a nitronyl nitroxide group in a cross-conjugated manner, was prepared. Upon hole injection from an electrode, the neutral microcrystals of BTBN exhibited nonlinear I-V characteristics that were interpreted in terms of the space-ch…
A model to determine the thermal stability of chemical hydrogen storage materials was developed to predict the stability of ammonia borane at 50−60 °C, the extreme range of environmental temperatures for hydrogen storage materials in PEM fuel cell applications. Experimental data from differential scanning calorimetry…
Abstract Polymer brushes are classically defined and are to date employed as assemblies of macromolecules tethered at one end to a surface. The concept of preparing surface‐grafted gels by crosslinking such brushes is attractive since it gives rise to new opportunities related to the constraints present in this type o…
Abstract Silk protein from the silkworm Bombyx mori has excellent chemical and mechanical stability, biocompatibility, and optical properties. Additionally, when the protein is purified and reformed into materials, the biochemical functions of dopants entrained in the protein matrix are stabilized and retained. This u…
p-Type ZnO nanowires doped with Ag were successfully obtained by low-temperature electrochemical growth followed by annealing. The p-type conductivity is achievable only under certain growth conditions such that the incorporation of Ag does not significantly affect the quality of the ZnO nanowires. The applied potenti…
In this paper, we report a biomolecule-assisted soft chemistry route for constructing complex Bi(2)S(3) nanostructures that exhibit controlled wetting behavior. The as-synthesized sample was characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), field emission SEM (FE-SEM), transmission electron…
The spinning triangle is a critical area in the spinning process of staple yarns. Its geometry influences the distribution of fiber tension in the spinning triangle and the properties of spun yarns. In earlier theoretical models, the spinning tension of the yarn acting on the convergence point is assumed to be perpend…
The sheet plasmon in epitaxially grown graphene layers on SiC(0001) and the influence of surface roughness have been investigated in detail by means of low-energy electron diffraction (LEED) and electron energy loss spectroscopy (EELS). We show that the existence of steps or grain boundaries in this epitaxial system i…
Gelatin is used as a functional ingredient in many foods, pharmaceuticals, and cosmetics as a stabilizing, thickening, and gelling agent. The rheological properties of gelatins are important in the potential functionality of gelatin. This study is designed to determine the rheological properties of gelatin extracted f…
Central to genetic work in any organism are the availability of a range of inducible and constitutive promoters. In this work we studied several promoters for use in the hyperthermophilic archaeon Sulfolobus acidocaldarius. The promoters were tested with the aid of an E. coli-Sulfolobus shuttle vector in reporter gene…