Materials Literature
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Photoemission from a single self-organized GaAs/AlGaAs quantum dot (QD) is temporally resolved with picosecond time resolution. The emission spectra consisting of the multiexciton structures are observed to depend on the delay time and the excitation intensity. Quantitative agreement is found between the experimental…
The approach to calculating the effective dielectric and magnetic response in bounded composite materials is developed. The method is essentially based on the renormalisation of the dielectric matrix parameters to account for the surface polarisation and the displacement currents at the interfaces. This makes it possi…
Chiral structures have been found as the lowest-energy isomers of bare $({\mathrm{Au}}_{28}$ and ${\mathrm{Au}}_{55})$ and thiol-passivated $[{\mathrm{Au}}_{28}({\mathrm{SCH}}_{3}{)}_{16}$ and ${\mathrm{Au}}_{38}({\mathrm{SCH}}_{3}{)}_{24}]$ gold nanoclusters. The degree of chirality existing in the chiral clusters wa…
In this paper, we show theoretically that there exists quasi-liquid on the edges and vertices of snow crystals between -4C and -22C, while the basal and prism faces have no quasi-liquid layers. Investigating the macroscopic theory of quasi-liquid and applying to the edges and vertices of the crystal, we find that the…
Synchrotron x-ray powder diffraction measurements have been performed on unpoled ceramic samples of $(1\ensuremath{-}x)\mathrm{Pb}({\mathrm{Mg}}_{1/3}{\mathrm{Nb}}_{2/3}){\mathrm{O}}_{3}\ensuremath{-}x{\mathrm{PbTiO}}_{3}$ (PMN-xPT) with $30%<~x<~39%$ as a function of temperature around the morphotropic phase bo…
Biodegradable polymers are designed to degrade upon disposal by the action of living organisms. Extraordinary progress has been made in the development of practical processes and products from polymers such as starch, cellulose, and lactic acid. The need to create alternative biodegradable water-soluble polymers for d…
Many potential applications have been proposed for carbon nanotubes, including conductive and high-strength composites; energy storage and energy conversion devices; sensors; field emission displays and radiation sources; hydrogen storage media; and nanometer-sized semiconductor devices, probes, and interconnects. Som…
Abstract The Nuclear Regulatory Commission (NRC) issues licenses for commercial power reactors to operate for up to 40 years and allows these licenses to be renewed for additional periods of 20 years. In 1995 the Commission issued Part 54 of Title 10 of the Code of Federal Regulations (10 CFR Part 54) specifying the r…
Important neutron reactions relevant to the generation of medium and long-lived radionuclides of significance to waste management in a fusion power plant have been identified. Cross sections from EAF-2001 were used to calculate the concentrations of these significant induced radionuclides. The concentrations of these…
Epitaxial BaTiO3 thin films grown on MgO-buffered R-plane-cut Al2O3 substrates show a non-uniform distribution of planar defects. Transmission electron microscopy allows the determination of the distributions of planar defects with respect to the Al2O3 substrate. The BaTiO3 film, the MgO buffer and the Al2O3 substrate…
JSJ Vastenhout; Practical Methods for Transmission Electron Microscopy of Polymers., Microscopy and Microanalysis, Volume 8, Issue S02, 1 August 2002, Pages 123
Abstract Polysulphide sealants are now widely used to ensure the integrity of fuel tanks on both civil and military aircraft. The consequences of failure of such sealants are severe both in terms of the length of time that the aircraft will be removed from service and the nature of the remedial work that must be carri…
A new class of polyphenylated phthalocyanine derivatives containing near-planar aromatic rings attached to the phthalocyanine core has been synthesized. The aromatic rings contributed to a significant red shift of the Q-band absorption. Linear optical and electrochemical properties of these derivatives are described.
Abstract Thin Co/ZrO 2 and Co/S‐ZrO 2 catalytic films for hydrocarbon‐selective catalytic reduction (HC‐SCR) of NO x were prepared and characterized by means of XPS, SEM and scanning Auger microscopy (SAM). Zirconia was deposited on a fibrous inconel support (Bekaert) by the sol–gel method. Cobalt was deposited on pur…
The structure and thermo emf of nanotubular and fractal carbon layers deposited from an electric discharge plasma were studied. The thermo emf of such nanotubular and fractal deposits is almost tenfold higher as compared to that of polycrystalline carbon, which is explained by the nanostructural state of carbon in the…
M Terauchi, M Kawana; Development of A High Energy-resolution Soft-X-ray Spectrometer for A Transmission Electron Microscope, Microscopy and Microanalysis,
Ladder-knit fancy yams are produced using a range of take-up ratios and component yams on a knitting machine that produces fancy yams. The effect of the properties of the component yarns on the final count, tenacity at break, and appearance of ladder-knit fancy yams is studied, and an expression is derived to determin…
Environmentally assisted cracking involves synergistic interactions between corrosion and deformation processes. This study focused on providing insight into the influence of the environment on the time-dependent deformation behavior of an ultra-high-purity Ni-16Cr-9Fe alloy in argon, dissociated hydrogen, and water e…
J R Michael; Electron Backscatter Diffraction in the SEM: A Tutorial, Microscopy and Microanalysis, Volume 8, Issue S02, 1 August 2002, Pages 724–725, https://d
Abstract To investigate the misorientation dependence of fracture behavior and Sb segregation level for different [001] symmetric tilt boundaries in Cu–2.0 mass% Sb alloy bicrystals, tensile tests at several temperatures from 77 to 743 K and energy-dispersed X-ray spectroscopy analyses were performed. The degree of em…