Materials Literature
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The introduction of Zr-lined “barrier” fuel clad tubing by GE in the early 1980s to counter the pellet-clad interaction (PCI) failure mechanism in fuel for boiling water reactors provided a major improvement in fuel reliability and operational flexibility. While the frequency of fuel failures has been substantially re…
Abstract The temperature dependences of the electrical resistivity and Hall mobility of p ‐type InTe chain single crystals in parallel and perpendicular directions to c ‐axis have been investigated in the temperature range of 28–260 K. The high anisotropy between ∂‖ and ∂⟂ which depends on temperature is attributed to…
An inhomogeneous lattice self-consistent field (SCF) theory is applied to wetting problems. In this method molecular details, such as chain length, chain architecture, and short-range molecular interaction parameters are the input parameters. In a 1D (one-dimensional) SCF calculation adsorption isotherms, interfacial…
We find the response of a grafted polymer brush in a melt state to the insertion of a small, impenetrable object in its bulk. The response is calculated by means of perturbation theory applied to Semenov's self-consistent mean-field theory of polymer brushes. We find that both the induced pressure field and the deform…
The reaction of hexachlorocyclotriphosphazene, N3P3Cl6 with pyridine-2-thiol affords only a geminal isomer, 1,1-bis(pyridyl-2-thio)-3,3,5,5-tetrachlorocyclotriphosphazene. Crystallographic characterization discloses that the nitrogen atom of the pyridine-2-thiolate group significantly interacts with the phosphorus ato…
The synthesis of the first liquid-crystalline allene derivatives with chiral smectic C-phases is reported.
The coadsorption of NO and NH 3 on Cu(111) was investigated by means of LEED, HREELS, and TPD. A new ordered (2 × 2) structure was found after annealing to 180 K NO−NH 3 coadlayers prepared from various relative exposures of NO and NH 3 at 100 K. A N 2 O desorption peak from the coadlayer appeared at 220 K, which was…
Electrical conduction paths through the Ni phase in Ni/yttria-stabilized zirconia (YSZ) cermet heve been analyzed using a Monte Carlo simulation based on percolation theory and electrical conductivity measurement. The minimum Ni-volume fraction of total solids determined from the electrical conductivity measurement is…
The complexes of iron(III) tetra(2-N-methylpyridyl)porphyrin with vinyl acetic acid and a selection of α-halo and α-hydroxycarboxylic acids, α-,β- and γ-ketoacids, β-dicarboxylic acids and polyacrylic acid have been photolysed (λ > 390 nm) in anaerobic aqueous solution. UV–VIS spectroscopy shows that the primary react…
Reaction of arsenic(III) oxide with vanadate in aqueous solution under reducing conditions leads to the formation of the molecular anion [AsIII8VIV6O26]4, built up from two semicircular fragments which fit into each other to form a cage structure.
Adsorption and oxidation of CO on Pd(110)-c(2 × 4)−O were investigated by reflection−absorption infrared spectroscopy (RAIRS), low-energy electron diffraction (LEED), and temperature-programmed reaction (TPR). High-frequency CO at 2140 cm -1, which was greatly influenced by adsorbed oxygen atoms, was observed by RAIRS…
An attenuated total reflection (ATR) method for surface plasmon polariton (SPP) excitation was studied to improve the sensitivity level of the classical Raman scattering from adsorbates on a metal surface. The enhancement of the Raman band intensity using both in- and out-coupling of the SPP is 400 for copper phthaloc…
The reaction of ebis (title ligand) with TCNQ produces a mixed-valence salt formed by a tetracation consisting of one centrosymmetric molecule of the neutral ligand and two dications, mutually related by the symmetry center and bearing a Se−Se bridge. The neutral ligand and the two dications are held together by the S…
We have synthesized a new poly(imide) precursor for solution electrodeposition onto conducting surfaces. The new monomer, N, N‘ -bis[ p -phenylamino(phenyl)]-1,4,5,8-naphthalenetetracarboxylic diimide (DNTD), contains a central naphthalene diimide moiety flanked by two dimerizable diphenylamine groups. DNTD was oxidat…
Applications of quantum chemistry approaches are considered to elucidate the mechanisms of structural phase transitions in H-bonded molecular crystals. The KH 2 PO 4 (KDP) family and squaric acid (H 2 SQ) are studied as examples. Proton rearrangements within H-bonds O H···O ⇄ O···H O are treated in terms of variation…
Anion-deficient perovskite oxides of the formula AM 1- x Al x O 3- x (A = Na or K; M = Nb or Ta) have been prepared for 0 < x ≤ 0.5. Diffraction experiments reveal that while the potassium compounds adopt orthorhombic/cubic perovskite structures similar to the parent KNbO 3 /KTaO 3, the sodium compound, NaNb 0.5 Al 0.…
In pyridine, p-tolylisocyanate reacts with [NBun4]3[α-PMo12O40] to give a number of products, among which are the highly functionalized neutral species [Mo10(NC6H4Me-p)12(PY)2O18], the azo compound p-MeC6H4NNC6H4Me-p, and reduced derivatives of α-[PMo12O40]3–.
Two types of water detritiation systems have been designed for fusion reactors of ITER scale. One of the systems is a combination of WD (Water Distillation) and VPCE(vapor phase catalytic exchange) columns. The other is a combination of a WD column and a CECE(combined electrolysis catalytic exchange) column. Three wat…
We compute in the strong-segregation regime the phase diagram of A−B diblock copolymer with added B homopolymer to see if the bicontinuous phase can be stabilized by adding homopolymers. Our work is motivated by the results of Ajdari and Leibler, who showed using a bending expansion that a single copolymer bilayer in…
A single-flow surface model unifying damage mechanics and plasticity is developed for quasi-brittle solids in general and concrete in particular. The necessity of using both plasticity and damage mechanics is discussed, and the preference for developing a single-flow surface model over the existing bi-surface models i…