Materials Literature
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The FP project is an international reactor safety project. Its main objective is to study the release, transport and retention of fission products in a severe accident of a light water reactor (LWR). The FPT4 test was performed with a fuel debris bed geometry, to look at late phase core degradation and the releases of…
Abstract We report a strong chemical structure dependence for the individual dissolution of single-walled carbon nanotubes (SWNTs) in aqueous micelles of six steroid biosurfactants including sodium cholate (SC), sodium deoxycholate (SDC), sodium taurodeoxycholate (STDC), sodium glycocholate (SGC), 3-[(3-cholamidopropy…
Multi‐materials are combinations of monolithic materials in a chosen configuration and scale. They can help populate the material property space and fill areas monolithic materials cannot reach. This paper presents a novel approach to compare the performance of monolithic materials and multi‐materials in multi‐criteri…
X-ray luminescence from CdTe nanoparticles is observed when CdTe nanoparticles are encapsulated into BaFBr:Eu2+ phosphors. In contrast, negligible x-ray luminescence is observed from the unencapsulated nanoparticles, either in solution or in solid form. The origin of the x-ray luminescence is attributed to the effecti…
On the basis of x-ray structural data and studies of the electrical, magnetic, and magnetoresistive properties and the ferromagnet resonance spectra of ceramic samples of La0.7Sr0.3Mn1−xFexO3 (0⩽x⩽0.10) it is established that a competition between structural changes influencing the ferromagnetism leads to a monotonic…
In this paper, a low-temperature stress-free electrolytic nickel (EL) deposition process with added dispersed diamond nanoparticles (diameter <0.5 /spl mu/m) is developed to synthesize Ni-diamond nanocomposite for fabricating electrothermal microactuators. Device characterization reveals dramatic performance improveme…
Several methodologies for the synthesis of corroles that carry minimal-sized electron-withdrawing substituents at the meso- C atoms were investigated; of these the one based on dypyrromethane/aldehyde condensation was fruitful. The new corrole with one C 6 F 5 and two CF 3 groups, as well as its cobalt(III) complex, w…
For nearly 50years, piezoelectric ceramics (primarily from the PZT family) have been the materials of choice as the active elements in underwater electroacoustic sound projectors. There is currently great interest in the materials science community for the consideration of newly discovered single crystal relaxor ferro…
SrTiO 3 thin films were deposited on vitreous silica substrates at various substrate temperatures (300–700°C) by rf magnetron sputtering technique. The transition from amorphous phase to polycrystalline phase for the films occurred at the substrate temperatures of 300–400°C. Their optical properties were investigated…
Abstract Nanocomposites of three different styrenic polymers (polystyrene – PS, styrene‐butadiene‐styrene triblock copolymer – SBS, and styrene‐ethylene/butylene‐styrene triblock copolymer – SEBS) containing organophilic silicates have been prepared using three different techniques. The materials were prepared by melt…
Abstract Mixed-ligand dinuclear Cu(I) complexes containing both diimine and diphosphine ligands have demonstrated interesting photophyisical properties; the complexes are emissive in solution at room temperature, even with 1,10-phenanthroline (phen) lacking a 2,9-substituted group.
The diffusion tensor and velocity correlation function of a Brownian particle immersed in a viscous compressible fluid confined between two parallel plane walls are calculated in point approximation. The fluid is assumed to satisfy stick boundary conditions at the walls. It is found that the velocity correlation funct…
Generally, ZnS–SiO 2 thin film is used as a protective layer in phase-change optical media. The wet etching characteristics of ZnS–SiO 2 have been investigated, and it was found that ZnS–SiO 2 can be patterned by laser irradiation and wet etching. Convex patterns of ZnS–SiO 2 with steep taper profiles were formed. The…
The ferroelectric properties of Pt∕Pb(Zr0.6Ti0.4)O3∕Pt∕TiO2∕SiO2∕Si thin-film capacitors with different thicknesses are investigated. According to the literature data, tilting of the hysteresis loops and marked increase of the coercive fields are observed when the thickness of the film is reduced. The degradation of t…
The convergent syntheses of three generations of carbosilane dendrimeric carbodiimides are described. The wedge-type building blocks were synthesized in a divergent way, starting from allyl chloride and a repetitive sequence of hydrosilylation with HSiCl3 and a Grignard reaction with allylmagnesium bromide. Hydrogenat…
The present study was focused on the effect of chitosan, a linear amino-polysaccharide, on the properties of handsheets made from bleached kenaf kraft pulp. Chitosan was incorporated into the sheets by three distinct techniques, equilibrium adsorption (pH 5), precipitation (pH 10), and spray application. The chitosan…
Cyclic voltammograms and galvanostatic polarization curves were traced for the copper electrode in alkaline and alkaline-sulfide solutions. In sulfide-free sodium hydroxide (NaOH) solutions, the anodic polarization curves are characterized by regions for the formation of cuprous oxide (Cu2O), cupric oxide (CuO), and s…
The crystal structure of the type-I clathrate compound Ba8Ge43 has been investigated by x-ray diffraction and transmission electron microscopy. The thermoelectric properties of Ba8Ge43 have also been investigated. The crystal structure of Ba8Ge43 is different from that reported for the usual type-I clathrate compounds…
The effect of the depletion of calcium on the structure and thermal stability of the D-galactose/D-glucose-binding protein (GGBP) from Escherichia coli was studied by fluorescence spectroscopy and Fourier-transform infrared spectroscopy. The calcium-depleted protein (GGBP-Ca) was also studied in the presence of glucos…
A novel poly( p -phenylene) derivative ( C 12 PPPC 11 OH ) was synthesized and used as a template for silica polymerization under ambient conditions in the absence of added catalysts. A few polymers of analogous molecular structures were also simultaneously used in control experiments to derive a molecular mechanism f…