Materials Literature
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Vacuum-deposited thin films have a columnar structure that includes appreciable void volume. This structure is responsible for many differences between the properties of materials in the form of thin films and in bulk. Refractive index is usually reduced and is a sensitive function of preparation conditions. Films als…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFriedel-Crafts acylation of toluene and p-xylene with carboxylic acids catalyzed by zeolitesBich Chiche, Annie Finiels, Catherine Gauthier, Patrick Geneste, Jean Graille, and Daniel PiochCite this: J. Org. Chem. 1986, 51, 11, 2128–2130Publication Date (Print):May 1, 1986Publ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoreduction of indigo dyes by electron donors. One- and two-electron-transfer reactions as a consequence of excited-state quenchingKirk S. Schanze, Lester Y. C. Lee, Charles. Giannotti, and David G. WhittenCite this: J. Am. Chem. Soc. 1986, 108, 10, 2646–2655Publication D…
The combination of properties of beryllium which results in this very low Z element being a candidate for use in fusion reactors is reviewed. The occurrence, availability, and processing of beryllium from both bertrandite (domestic) and beryl (imported) ores are described. The available beryllium grades are characteri…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal structure of bis[bis(1,4,7-triazacyclononane)nickel(III)] dithionate heptahydrate and its single-crystal EPR spectrumKarl Wieghardt, Wolfgang Walz, Bernhard Nuber, Johannes Weiss, Andrej Ozarowski, Horst Stratemeier, and Dirk ReinenCite this: Inorg. Chem. 1986, 25, 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDonor-acceptor layer formation and lattice site preference in the solid: the CaBe2Ge2 structureChong. Zheng and Roald. HoffmannCite this: J. Am. Chem. Soc. 1986, 108, 11, 3078–3088Publication Date (Print):May 1, 1986Publication History Published online1 May 2002Published ini…
As the result of a printing error the captions for figures 17 and 18 as well as figures 19 and 20 were inadvertently interchanged
Thin films of various vanadium oxides, including the phase transition material vanadium dioxide, have been deposited onto sapphire substrates by reactive ion-beam sputtering. In this process, an argon ion beam sputters a vanadium target in the presence of an oxygen background. Coating chemistry, structure, surface mor…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFrom plastic-crystal paraffins to liquid-crystal polyethylene: continuity of the mesophase in hydrocarbonsGoran UngarCite this: Macromolecules 1986, 19, 5, 1317–1324Publication Date (Print):May 1, 1986Publication History Published online1 May 2002Published inissue 1 May 1986…
The nonlinearity of ZnO varistors is significantly influenced by the Bi 2 O 3 and Sb 2 O 3 contents, as well as by the phase composition of the Bi 2 O 3 . Degradation of the current‐voltage characteristics due to the applied voltage is not always lowered by the β—γ transition of the Bi 2 O 3 phase. Lattice parameter d…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLiquid-phase thermal decomposition of hexadecane: reaction mechanismsThomas J. FordCite this: Ind. Eng. Chem. Fundamen. 1986, 25, 2, 240–243Publication Date (Print):May 1, 1986Publication History Published online1 May 2002Published inissue 1 May 1986https://pubs.acs.org/doi/…
A survey of the possible autocatalytic crystallization processes called explosive crystallization in liquid and solid states is given. The explosive liquid-phase epitaxy with laterally moving coupled interfaces of melting and crystallization in amorphous silicon layers on insulators is investigated by the use of an ex…
Abstract The crystal and electronic structures of molecular superconductor θ-(BEDT-TTF)2(I3)1−x(AuI2)x (x<0.02) were examined. BEDT-TTF molecules form a two-dimensional network. The dihedral angle between the planes of the neighbouring molecules interrelated by the screw axis is about 80°. Examination of the ba…
Abstract Biotite transformations in 10 pedons representing a developmental sequence of soils formed from coarse‐grained regional metamorphic rocks in the Piedmont and lower elevations of the Blue Ridge provinces of North Carolina are reported. Kaolinite is common to abundant in sand fractions of six of the pedons and…
Abstract Twenty profiles were examined in each of five transects along the length of the Mall in Washington, DC. The soils were formed in mixed, man‐deposited materials with lithologic discontinuities present in 95% of the profiles. Ninety‐nine percent of the profiles were within fine‐loamy and coarse‐loamy taxonomic…
The charging and discharging characteristics of polypyrrole‐electrolyte‐polypyrrole cells were studied. It was found that “secondary” batteries could be formed in this way with rather large coulombic efficiencies but poor charge retention properties. The coulombic capacity ( Q out ) varied strongly with the total char…
The retention of 100 eV deuterium and tritium ions in POCO AXF-5Q graphite has been measured for the temperature range 323–1773 K. Both nuclear reaction analysis and dissolution counting were used. Below 1000 K, the retention is thought to be characterized by saturation of the near-surface region and by surface diffus…
Solution calorimetry of MgAl 2 O 4 ‐Al 8/3 O 4 solid solutions was performed in a molten 2PbO · B 2 O 3 solvent at 975 K. The results indicate small negative heats of mixing, relative to spinel standard states for both end‐members. These data were combined with information on the energetics of the α‐γ transition in Al…
Narayanaswamy's model of structural relaxation is applied to the data of Hara and Suetoshi on volume relaxation in plate glass. Both the Adam‐Gibbs and Arrhenius equations are used to represent the relaxation time. Equally good fits are obtained with both equations, but only the Adam‐Gibbs model gives Physically meani…
Synchrotron radiation from the German storage ring BESSY has been used to study the photoelectron spectrum of the water molecule. Asymmetry parameters and relative photoionization cross sections have been measured for all four molecular orbitals (2a1, 1b2, 3a1, and 1b1) in the 30–140 eV photon energy range. The result…