Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA molecular interpretation of the toughness of glassy polymersH. R. BrownCite this: Macromolecules 1991, 24, 10, 2752–2756Publication Date (Print):May 1, 1991Publication History Published online1 May 2002Published inissue 1 May 1991https://pubs.acs.org/doi/10.1021/ma00010a01…
This paper describes a light-scattering study of the glass transition in nonaqueous suspensions of sterically stabilized colloidal spheres. The observed phase behavior, fluid, crystal, and glass, is consistent with an essentially hard-sphere interaction between the particles. Metastable fluid states were obtained upon…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNonlinear optical properties of nanometer-sized semiconductor clustersY. WangCite this: Acc. Chem. Res. 1991, 24, 5, 133–139Publication Date (Print):May 1, 1991Publication History Published online1 May 2002Published inissue 1 May 1991https://pubs.acs.org/doi/10.1021/ar00005a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHyperbranched macromolecules via a novel double-stage convergent growth approachKaren L. Wooley, Craig J. Hawker, and J. M. J. FrechetCite this: J. Am. Chem. Soc. 1991, 113, 11, 4252–4261Publication Date (Print):May 1, 1991Publication History Published online1 May 2002Publis…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation H. Ade, J. Kirz, S. Hulbert, E. Johnson, E. Anderson, D. Kern; Images of a microelectronic device…
We have measured the cathodoluminescence spectra of microwave plasma-assisted chemical-vapor deposited (CVD) polycrystalline diamond films at 77 K over the spectral range of 2300–8000 Å. Annealing studies of these spectra have been carried out at 500, 800, 1000, 1200, and 1350 °C. Rich spectra are observed. Many of th…
Electrosyntheses, Spectroelectrochemical, Electrochemical, and Chronovoltabsorptometric Properties of Family of Poly (Aromatic Amines), Novel Processible Conducting Polymers: I . Poly(Benzidines), Chandrasekhar, P., Gumbs, Ronald Winston
We use the local density approximation to density functional theory to re-examine the well-known ‘theoretical strength’ of metals. This is done by calculating ideal twin stress in five b.c.c. transition metals, and in Ir, Cu and Al. This leads us to a first-principles, quantum-mechanical confirmation of the Frenkel mo…
Abstract The successive phase transitions of the polymorphs of CsSnI3 were studied by means of the powder X-ray diffraction and their crystal structures were analyzed at three different temperatures by the Rietveld method.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStereocomplex formation between enantiomeric poly(lactic acid)s. 2. Stereocomplex formation in concentrated solutionsHideto Tsuji, Fumitaka Horii, Suong Hyu Hyon, and Yoshito IkadaCite this: Macromolecules 1991, 24, 10, 2719–2724Publication Date (Print):May 1, 1991Publicatio…
Computer simulations are made of polarizing microscope textures of supramicron-sized nematic droplets with director configurations which commonly occur in polymer and other dispersions. The simulations are computed from polarization rotations and phase shifts caused by nonuniform optical anisotropies of the nematic st…
XPS techniques are used to study the effects of Al Kα x-rays on the surface chemical composition of CeO2. We find that prolonged exposures cause the formation of some Ce3+ oxidic species at the surface. We have studied the Ce 3p, Ce 3d, O 1s, Ce 4p, Ce 4d, and valence band regions in an attempt to localize the depth o…
X‐ray photoelectron spectroscopy (XPS) has often played the major role in the chemical characterization of select surface species, but the extension of that role to larger classes of compounds has generally been limited by such problems as cleanliness, charging, and relaxation shifts. In this article we suggest that a…
The frozen phonon technique is introduced as a means of including the effects of thermal vibrations in multislice calculations of CBED patterns. This technique produces a thermal diffuse background, Kikuchi bands and a Debye–Waller factor, all of which are neglected in the standard multislice calculation. The frozen p…
The kinetics and mechanism of the sonochemical reactions of p-nitrophenol have been investigated in oxygenated aqueous solutions. In the presence of ultrasound (20 kHz, 84 W) p-nitrophenol was degraded primarily by denitration to yield NO_2^-, NO_3^-, benzoquinone, hydroquinone, 4-nitrocatechol, formate, and oxalate.…
The important role of deformation twinning in plastic deformation of h.c.p. metals and alloys is emphasized and the twin nucleation mechanisms are examined. A bifurcated homogeneous nucleation model is presented on the basis of the classical nucleation theory, the shape bifurcation theory and the elastic inclusion mod…
Abstract This article summarizes the detailed equations for the time‐dependent Hartree–Fock treatment of nonlinear properties for perturbations made up of a static electric field and an oscillating field. Explicit expressions for all nonlinear processes up to third order are obtained in terms of the density matrices a…
Abstract XPS spectra of nine model polymers containing oxygen functional groups are studied. The measured O 1s binding energies were 532.8 eV for ether and alcohol oxgens, 532.2 eV for ketone oxygens and 532.2 and 533.7 eV for the carbonyl‐ and ether‐type oxygens in ester groups, respectively. Comparison with previous…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTColloid stabilization with grafted polyelectrolytesPhilip PincusCite this: Macromolecules 1991, 24, 10, 2912–2919Publication Date (Print):May 1, 1991Publication History Published online1 May 2002Published inissue 1 May 1991https://pubs.acs.org/doi/10.1021/ma00010a043https://…
The present state of the problem of the strong interaction of a metal with the carrier is analysed and the main causes responsible for the appearance of this effect are considered. Data demonstrating the influence of the strong interaction of a metal with the carrier on the absorption and catalytic properties of depos…