Materials Literature
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Fuel Assemblies designed and fabricated by Westinghouse Electric Sweden (WSE) to reach high burnup have been operated in the Leibstadt nuclear power plant (KKL) for seven cycles attaining an assembly average burnup above 60 MWd/kgU. The irradiation conditions in KKL featured linear heat generation rates ranging from 2…
Abstract Gold and silver nanoparticles capped with photochromic diarylethene ligands were prepared and their photochromic performance was investigated. Although the quenching of cyclization reactions by the metal particles took place to some extent, the diarylethene on the nanoparticles underwent reversible photochrom…
Platelike SrTiO 3 particles with a cubic perovskite structure were synthesized by topochemical microcrystal conversion (TMC) from platelike precursor particles of layer-structured SrBi 4 Ti 4 O 15 at 950 °C. SrTiO 3 particles preserved the shape of precursor particles, and had a thickness of approximately 0.5 µm and a…
A promising approach to addressing the performance limitations of currently available mechanical and bioprosthetic heart valves lies in tissue engineering. Tissue-engineered valves should incorporate the complex microstructure of the native valves to mimic their unique mechanics. This would include a layered topology,…
Designed amphiphilic beta-sheet peptides with the sequence Pro-Glu-(Phe-Glu)(n)-Pro (n = 2-7) were previously shown by grazing incidence X-ray diffraction (GIXD), to form ordered two-dimensional (2-D) monolayer structures at interfaces induced by the proline residues at peptide termini. The GIXD diffraction pattern wa…
Abstract Dislocation distributions are characterized on a µm‐scale in various plastically deformed natural brown type IIa diamond samples before and after high‐pressure high‐temperature (HPHT) treatment. Transmission electron microscopy (TEM) is used for a statistical study. Applying conventional diffraction contrast…
The characterizations of carbon nanotube transistors at high frequencies have so far been hindered by large parasitic and extrinsic capacitances. We present a quantitative analysis of the limitations imposed by probe pad parasitics on single-wall carbon nanotube transistor characterization at gigahertz frequencies. Ou…
Di-, tetra-, and hexamethinemerocyanines were synthesized on the basis of barbituric and 1,3-dimethylbarbituric acids and heterocycles characterized by a strong (1-benzyl-1,2-dihydrobenzo[cd]indole), medium (1,3-dihydro-1,3,3-trimethyl-2H-indole and 3-ethyl-2,3-dihydro-1,3-benzothiazole), and strong electron-donor pow…
Relaxor-type ferroelectric (1−x)Pb(Mg1∕3Nb2∕3)O3–xPbTiO3 (PMN-PT) films, 2–3μm in thickness, with a PbTiO3 content (x) ranging from 0 to 1 were grown on (100)cSrRuO3‖(100)SrTiO3 substrates at 650°C by metal-organic chemical vapor deposition. The effects the x value had on the crystal structure, dielectric and ferroele…
We report on the room temperature ferromagnetism observed in heat treated nanocrystalline diamonds. By systematic annealing of nanocrystalline diamond, graphitic nanoclusters having finite magnetization with well-defined hysteresis and coercivity, and a Curie temperature (TC) well above 400 K (estimated TC ~ 590 K), w…
The resistivity, magnetization and ultrasonic properties of charge-ordered polycrystalline (Nd(0.75)Na(0.25))(x)(Nd(0.5)Ca(0.5))(1-x)MnO(3) have been investigated from 50 to 300 K. A considerable velocity softening accompanied by an attenuation peak was observed around the charge-ordering transition temperature (T(CO)…
The vibrational (infrared and Raman) spectra of 4-methyl-3-nitrobenzaldehyde have been reported. The assignments of fundamentals are proposed and discussed by assuming the molecule under C S point group symmetry.
Self-lubricated bearings are big business for some PM manufacturers. Now a team from Gibraltar Industries' SCM Metal Products has produced a new series of bronze powders that seem to offer higher performance and lower costs than standard premixes.
Neutron powder diffraction and single crystal x-ray resonant magnetic scattering measurements suggest that Dy plays an active role in enhancing the ferroelectric polarization in multiferroic DyMnO3 above TNDy = 6.5 K. We observe the evolution of an incommensurate ordering of Dy moments with the same periodicity as the…
The dilute solutions of the hyperbranched perfluorinated polyphenylenegermane-PMAA block copolymer have been studied by dynamic and static light scattering and viscometry. It has been demonstrated that macromolecules of the block copolymer aggregate in all the solvents under study (methyl ethyl ketone, dioxane, and et…
A Fe nanowires-filled amorphous carbon nanotubes (FeNW-filled a-CNTs) array was synthesized by sequential growth of electrodeposited Fe nanowires and subsequent chemical vapour deposition of amorphous CNTs in the nanochannels of alumina template. Structural characterizations of as-prepared FeNW-filled a-CNTs were carr…
This paper is a short review on some recent developments regarding steels for automotive use. A new precoated steel suitable for to hot stamping processing has been developed, which is most appropriate for producing anti‐intrusion parts. Another evolution of precoated steels is a new inorganic treatment (NIT), which h…
Wet electron microscopy (EM) is a new imaging method with the potential to allow higher spatial resolution of samples. In contrast to most EM methods, it requires little time to perform and does not require complicated equipment or difficult steps. We used this method on a common murine macrophage cell line, IC-21, in…
Co–Al–Ni alloys were produced by melt-spinning followed by heat treatment. X-ray and thermomagnetic studies revealed that the rapidly solidified melt-spun ribbons consisted of a nonequilibrium bcc-(Co,Ni)Al-type structure. The Curie temperature was closely dependent on the Ni content of the Co–Al–Ni alloy. Although th…
The Japanese and Spanish nuclear industries have conducted joint experimental programmes since early 1990's to address fuel performance issues such as fuel volume change and fission gas release. These efforts have produced large amount of valuable information on in-reactor performance of fuel materials representing cu…