Materials Literature
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The ADAGE computer graphics system has been used to develop a modified Devonshire form for the elastic Gibbs function to describe the simple proper ferroelectric phases in the PbZrO3:PbTiO3 family of crystalline solid solutions. The unusual morphotropic phase boundary between tetragonal and rhombohedral forms has been…
The surface flashover of Teflon, plexiglass, quartz, Pyrex glass, Macor glass-ceramic, and sapphire solid insulators has been measured in vacuum (∼10−8 Torr, ∼10−6 Pa) and in atmospheric air using dc, ac (60 Hz), and 1.2/50-μsec lightning impulse voltages. The dependence of the flashover voltage on the following param…
The material response to rolling contact loading has been analyzed using quantitative X-ray diffraction methods. This has led to the discovery of preferred crystalline orientation in very narrow subsurface regions of endurance-tested 6309 deep groove ball bearing inner rings. The high hydrostatic pressure field, deriv…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInternal surface reversed-phase silica supports for liquid chromatographyI. Helene. Hagestam and Thomas C. PinkertonCite this: Anal. Chem. 1985, 57, 8, 1757–1763Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985ht…
The conjugated polymers polyacetylene (PA) and poly(p‐phenylene) (PPP) have been examined for their possible use as negative electrode materials in nonaqueous secondary batteries. Cathodically stable electrolytes have been identified which allow high reduction levels for these polymers, and charge‐storage capacities o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of interstitial palladium-carbon phase by interaction of ethylene, acetylene, and carbon monoxide with palladiumS. B. Ziemecki, G. A. Jones, D. G. Swartzfager, R. L. Harlow, and J. Faber Jr.Cite this: J. Am. Chem. Soc. 1985, 107, 15, 4547–4548Publication Date (Prin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal and oxidative degradation of poly(methyl methacrylate): weight lossT. Hirata, Takashi Kashiwagi, and J. E. BrownCite this: Macromolecules 1985, 18, 7, 1410–1418Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July…
The empirical scaling law σ(ω, T)/σ(0, T)=f[Aω/σ(0, T)] is implied for a.c. conductivities calculated in the extended pair approximation (EPA) for a variety of models in parameter ranges that are typical experimentally. The number A depends upon the model considered; ω and σ represent frequency and conductivity, respe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-purity, monodisperse TiO2 powders by hydrolysis of titanium tetraethoxide. 1. Synthesis and physical propertiesEric A. Barringer and H. Kent BowenCite this: Langmuir 1985, 1, 4, 414–420Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Pu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLight-induced excited-spin-state trapping in iron(II) spin-crossover systems. Optical spectroscopic and magnetic susceptibility studyS. Decurtins, P. Gutlich, K. M. Hasselbach, A. Hauser, and H. SpieringCite this: Inorg. Chem. 1985, 24, 14, 2174–2178Publication Date (Print):…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetailed molecular structure of a vinyl polymer glassDoros N. Theodorou and Ulrich W. SuterCite this: Macromolecules 1985, 18, 7, 1467–1478Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985https://pubs.acs.org/doi…
A new method is described for preparing colloidal gold particles in any size between approximately 3 and 17 nm for electron microscopy. The gold particles are homogeneous in size (homodisperse). When bound to various proteins (e.g. IgG and protein A), the complexes were stable for long periods and suitable for affinit…
Preface 1. What is phytoplankton? 2. Mechanisms of suspension 3. Spatial and temporal distribution of phytoplankton 4. Photosynthetic activity of phytoplankton 5. Nutrients 6. Growth and survival 7. Loss process 8. Periodicity and change in phytoplankton composition Glossary and symbols References Index to lakes and r…
In 1978 it was discovered, largely through the work of Fleischmann, Van Duyne, Creighton, and their coworkers that molecules adsorbed on specially prepared silver surfaces produce a Raman spectrum that is at times a millionfold more intense than expected. This effect was dubbed surface-enhanced Raman scattering (SERS)…
The literature data on the kinetic and thermodynamic characteristics of the polycondensation of aromatic diols, diamines, tetramines, and their derivatives with tetracarboxylic acid dianhydrides and dicarboxylic acid dihalides in amide solvents are surveyed. Attention is concentrated on the analysis of the dependence…
Received 27 December 1984DOI:https://doi.org/10.1103/PhysRevLett.54.2727©1985 American Physical Society
The glass transition has historically been viewed as an anomaly involving the specific heat of supercooled liquids. It is also associated with a divergence of the relaxation times for liquid rearrangements. We have developed a new spectroscopy to study the frequency dependence of the specific heat of liquids which con…
We present here a general framework to produce quasiperiodic tilings and more general quasiperiodic patterns in $n$ dimensions corresponding to a finite number of local neighborings around each point. In particular, we give simple descriptions of the Penrose tilings of the plane and of a tiling of the three-dimensiona…
The energy versus position of a single Si adatom on a two-dimensionally infinite Al(001) substrate is calculated. The only physical approximations made are the Born-Oppenheimer approximation and the use of a local exchange-correlation potential. Computed binding energies, force constants, and bond charges for two diff…
The possibility that non-stoichiometric barium perovskite (BaFeO3−x) is formed in the very early stages of the reaction kinetics of the hexagonal M-phase ferrites (BaFe12O19) is evaluated. Samples with atomic relation Ba/Fe = 1 are heated at low and moderate temperatures (600 to 1100 °C) in air, and the collected Moss…