Materials Literature
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Epitaxial thin films of BaTiO3 have been prepared using radio-frequency magnetron sputter deposition on MgO(100) substrates. Various x-ray-diffraction techniques were employed to characterize the crystal structure of the films. The films were fully tetragonal and consisted of c domains. Their tetragonality has been sh…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComplex Formation between Poly(dimethyldiallylammonium chloride) and Carboxylated Starburst DendrimersYingjie Li, Paul L. Dubin, Ralph Spindler, and Donald A. TomaliaCite this: Macromolecules 1995, 28, 24, 8426–8428Publication Date (Print):November 1, 1995Publication History…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron Spin Polarization Transfer from Excited Triplet Porphyrins to a Nitroxide Radical via a Spin Exchange MechanismJun-ichi Fujisawa, Kazuyuki Ishii, Yasunori Ohba, Masamoto Iwaizumi, and Seigo YamauchiCite this: J. Phys. Chem. 1995, 99, 47, 17082–17084Publication Date…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT.alpha.-Diazo Ketones as Photochemical DNA Cleavers: A Mimic for the Radical Generating System of Neocarzinostatin ChromophoreKazuhiko Nakatani, Satoshi Maekawa, Kazuhito Tanabe, and Isao SaitoCite this: J. Am. Chem. Soc. 1995, 117, 43, 10635–10644Publication Date (Print):No…
The collapse of a cavitation bubble is examined by direct numerical simulations of the Navier–Stokes equations, using a finite difference/front tracking technique. Bubbles in both a quiescent fluid as well as shear flows are examined. For quiescent fluid, the results are compared with theoretical and previous computat…
Some perovskite-type transition-metal mixed oxide powders active in the combustion catalysis, with formulas LaMO(3) (M = Fe, Cr, Co, and Mn), have been prepared by different methods. Similarly, potential supports for combustion catalysts nearly isostructural with the above ones have been prepared, with compositions Sr…
No abstract available.
Polyaspartic acid, a polymeric form of aspartic acid (C4H7NO4), was examined as a corrosion inhibitor for steel as a function of pH, temperature, and hydrodynamic conditions. The temperature ranged from 25°C to 95°C, and the concentration ranged from < 1 wt% to ~ 10 wt%. Experimental procedures included electro…
Abstract A previous study of this toposequence from semiarid northeastern Brazil concluded that processes of P transformation in semiarid tropical landscapes with steep slopes are difficult to describe with concepts developed in temperate regions. In these soils, derived from syenitic rocks, particle‐size fractions re…
This communication was stimulated by a meeting of the Sonderforschungsbereich 335, ‘Anisotrope Fluide’ at the Technische Universität Berlin, in December 1994. At this conference we realized that there are some very strong similarities between the melting processes of blue phases, twist grain boundary phases, and cubic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleIntercalation of Pyrene into Alkylammonium-Exchanged Swelling Layered Silicates: The Effects of the Arrangements of the Interlayer Alkylammonium Ions on the States of AdsorbatesMakoto Ogawa, Tetsuya Wada, and Kazuyuki KurodaCite this: Langmuir 1995, 11, 11, 4598–4600Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of Hydrolytic Degradation of Poly(ethylene naphthalene-2,6-dicarboxylate)H. Zhang and I. M. WardCite this: Macromolecules 1995, 28, 23, 7622–7629Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 November 1995h…
We have built and tested a 1 keV electron-beam microcolumn that focuses 1 nA of beam current into a 10 nm full width half-maximum beam diameter at a working distance of 1 mm. The electron source is a miniaturized Zr/O/W Schottky field emitter with 150 μA/sr angular emission current density operating at about 1800 K at…
We show, using an atomistic model with a Stillinger-Weber potential (SWP), that in the absence of reconstruction, the basic assumption of the Peierls-Nabarro (PN) model that the dislocation core is spread within the glide plane is verified for silicon. The Peierls stress (PS) obtained from the two models are in quanti…
Abstract In order to provide nw experimetnal facts required for constructing a nonlinear constitutive equationfor solid polymers, some tests wee conducted on amorphous pojymers of polycarbonate and poly(methyl methacrylate) and for a crystalline polymer of polyxymethylene under varous strain paths such as comprssion,…
Preparation and Evaluation of Two‐Dimensional Polymer Films by Chemical Modification of an Alkanethiol Self‐Assembled Monolayer for Protection of Copper Against Corrosion, Itoh, Miki, Nishihara, Hiroshi, Aramaki, Kunitsugu
A field exposure program has been implemented in a rural atmosphere with the primary aim of studying the corrosion mechanisms of sheltered copper. Emphasis has been placed upon the initial corrosion behavior after days, weeks, and months. Two starting dates, one in October and one in April, with different environmenta…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCoupling between Photochromism and Second-Harmonic Generation in Spiropyran- and Spirooxazine-Doped Polymer FilmsYomen Atassi, Jacques A. Delaire, and Keitaro NakataniCite this: J. Phys. Chem. 1995, 99, 44, 16320–16326Publication Date (Print):November 1, 1995Publication Hist…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, Structure, and Coordination Properties of Silicon-Bridged MacrocyclesBurkhard Koenig, Martin Roedel, Peter Bubenitschek, Peter G. Jones, and Iris ThondorfCite this: J. Org. Chem. 1995, 60, 23, 7406–7410Publication Date (Print):November 1, 1995Publication History P…
The type of alignment achieved with discotic liquid crystals is important for a number of applications. It is found to depend decisively on the structure of the substrate. Infrared dichroism experiments are used to study the alignment of truxene and triphenylene cores (see Fig.) on amorphous silicon and polycrystallin…