Materials Literature
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Abstract The Kelvin impulse is a particularly valuable dynamical concept in unsteady fluid mechanics, with Benjamin and Ellis [2] appearing to be the first to have realised its value in cavitation bubble dynamics. The Kelvin impulse corresponds to the apparent inertia of the cavitation bubble and, like the linear mome…
A fine‐sized (∼0.1 μm), agglomerate‐free Al 2 O 3 dispersion was used to prepare homogeneous green bodies with ∼69% relative density and ∼10‐nm median pore radius. Samples could be sintered at 1150°C to a relative density >99.5% and an average grain size of 0.25 μm.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAchieving high quantum yield charge separation in porphyrin-containing donor-acceptor molecules at 10 KMichael R. Wasielewski, Douglas G. Johnson, Walter A. Svec, Kristin M. Kersey, and David W. MinsekCite this: J. Am. Chem. Soc. 1988, 110, 21, 7219–7221Publication Date (Pri…
An electrochemical impedance analysis of pure aluminum in at 25°C is reported. Impedance spectra have been obtained at 30–80 mV intervals extending from the hydrogen evolution region at −1.96V ( vs. , ) to the transpassive dissolution region at −1.35V. The impedance spectra are found to consist of two intersecting cap…
The pair structure and the thermodynamics of isotropic fluids composed of hard particles of different shapes and concentrations are considered by a new approach which (i) unifies the diagramatic Percus–Yevick theory and the geometric scaled particle theory, and (ii) leads to analytic accurate approximations for the di…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of the glass transition temperature of miscible polymer blendsMadeleine Aubin and Robert E. Prud'hommeCite this: Macromolecules 1988, 21, 10, 2945–2949Publication Date (Print):October 1, 1988Publication History Published online1 May 2002Published inissue 1 October 1…
Reaction curves were obtained at various temperatures and concentrations for the formation of BaTiO 3 from particulate titania in Ba(OH) 2 solution. Kinetic analyses were performed by constructing mathematical models which took into account the particle size distribution of the reactant titania for both the topochemic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTemperature dependence of the luminescence of cyclometalated palladium(II), rhodium(III), platinum(II), and platinum(IV) complexesFrancesco Barigelletti, Diana Sandrini, Mauro Maestri, Vincenzo Balzani, Alex Von Zelewsky, Laurent Chassot, Philippe Jolliet, and Urs MaederCite…
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
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Electrochemical studies on the degradation reactions of oxidized polyaniline (PA) have been carried out to identify major soluble degradation products. As a result of spot tests as well as spectrophotometric experiments, p‐benzoquinone (BQ) was identified as a major degradation product. The overall number of electrons…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTest of the reptation concept: crystal growth rate as a function of molecular weight in polyethylene crystallized from the meltJohn D. Hoffman and Robert L. MillerCite this: Macromolecules 1988, 21, 10, 3038–3051Publication Date (Print):October 1, 1988Publication History Pub…
Phase relationships in the SiC‐AlN system were determined by analytical electron microscopy of local equilibria among adjacent phases in hot‐pressed samples and in diffusion couples. At 2100° to 2300°C, a 4H–2H equilibrium exists, the 4H field extending from ∼2 mol% AlN to an upper limit of 11 to 14 mol% AlN. The wurt…
The corrosion potential of AISI(1) 316 stainless steel (SS) and the oxygen reduction rate, as measured by the cathodic polarization curve, have been determined with and without the formation of a natural marine bacterial film on the surface. The data show that the amount of scatter in the corrosion potential increases…
Colloidal dispersions of uniform spherical particles of yttrium basic carbonate and rodlike particles of yttrium ammine carbonate were prepared by aging at elevated temperatures yttrium salt solutions in the presence of urea. Different composition and morphology were achieved by altering the aging temperature and time…
Abstract Thermal analysis was performed on poly(butylene terephthalate), PBT, between 210 and 560 K. By combination of experimental heat capacities with computations with an approximate frequency spectrum of 65 group and 19 skeletal vibrations, preliminary recommended ATHAS (1988) heat capacities are proposed for the…
In this paper, single crystals of Li 13 Nd(GeO 4 ) 4 are grown by the Czochralski method. The unit cell dimensions and the crystal system are determined by an X-ray diffraction method. The principal refractive indices, n a , n b and n c and the temperature dependence of birefringences, n c - n b , n c - n a and n a -…
Current understanding of different phases as well as the phase transitions between them has only been achieved following recent theoretical advances on the effects of dimensionality in statistical physics. P S Pershan explains the connection between these two separate areas and gives some examples of problems where th…
A convolutive profile-fitting procedure is described for analysing X-ray diffraction peak profiles broadened by microstructural factors (crystallite size and lattice disorder). The method requires, in a first stage, an accurate determination of the instrumental function, which is subsequently convoluted with a paramet…
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More