Materials Literature
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Grain growth kinetics in alumina‐rich, zirconia–alumina composites have been examined as a function of volume fraction of zirconia. Both he microstructural scale and character alter during grain growth. Grain growth exponents between n = 3 and 4 were observed and have been rationalized in terms of current models for g…
Abstract The compounds (NMe 4 ) 5 [As 2 Mo 8 V 4 AsO 40 ] · 3 H 2 O 2a , (NH 4 ) 21 [H 3 Mo 57 V 6 (NO) 6 O 183 (H 2 O) 18 ] · 65 H 2 O 3a , (NH 2 Me 2 ) 18 (NH 4 ) 6 [Mo 57 V 6 (NO) 6 O 183 (H 2 O) 18 ] · 14 H 2 O 3b and (NH 4 ) 12 [Mo 36 (NO) 4 O 108 (H 2 O) 16 ] · 33 H 2 O 4a ( 3a and 4a were not correctly reported…
We report an off-lattice Monte Carlo calculation of the equilibrium properties of a monodisperse polymer brush in a good solvent. We find that the density profile, in general, is in agreement with the results of self-consistent field theory, with some discrepancies observed near the wall and at the tail of the profile…
The properties of thin films of Cu with 1 at. % Al are explored. As-deposited films of Cu(1 at. % Al) oxidize orders of magnitude more slowly than do those of pure Cu. After Cu(1 at. % Al) films are annealed in Ar at 400 °C for 30 min, very thin protective layers of aluminum oxide form on the surface. These thin oxide…
It is shown that the interaction between soft atomic potentials in glasses leads to a density of the low-energy tunneling states, P\ifmmode\bar\else\textasciimacron\fi{}, which does not depend on the concentration of defects. The dimensionless parameter P\ifmmode\bar\else\textasciimacron\fi{}${\ensuremath{\gamma}}^{2}…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSyntheses of Mixed-Metal Sulfide Cubane-Type Clusters with the Novel PdMo3S4 Core and Reactivities of the Unique Tetrahedral Pd Site Surrounded by Sulfide Ligands toward Alkenes, CO, tBuNC, and AlkynesTakashi MurataTakashi MurataMore by Takashi Murata, Yasushi MizobeYasushi…
DC excitation of transformers due to geomagnetically induced currents was studied by model experiments. First, differences in the DC excitation phenomenon due to the iron core structure were studied using three typical small-scale models. The results verified that single-phase three-legged cores were most susceptible…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural Predictions in the ABO3 Phase DiagramDaniel M. Giaquinta and Hans-Conrad zur LoyeCite this: Chem. Mater. 1994, 6, 4, 365–372Publication Date (Print):April 1, 1994Publication History Published online1 May 2002Published inissue 1 April 1994https://pubs.acs.org/doi/1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal Healing of Self-Assembled Organic Monolayers: Hexane- and Octadecanethiol on Au(111) and Ag(111)Jean-Pierre Bucher, Lars Santesson, and Klaus KernCite this: Langmuir 1994, 10, 4, 979–983Publication Date (Print):April 1, 1994Publication History Published online1 May 2…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Pronounced Axial Ligand Effect on the Reactivity of Oxoiron(IV) Porphyrin Cation RadicalsZeev Gross and Shay NimriCite this: Inorg. Chem. 1994, 33, 9, 1731–1732Publication Date (Print):April 1, 1994Publication History Published online1 May 2002Published inissue 1 April 199…
The frequency ω versus wave vector k of elastic waves propagating in periodic binary composites consisting of solid inclusions placed periodically in a host matrix was calculated. Attention was focused on the possibility of stop bands (spectral gaps) for all directions of propagation in such composites. It was found t…
“Supercapacitors” are a new category of electrical condenser which are based on the properties of charge distribution at the interface of an electrode/electrolyte solution. After an introduction to the features of such devices, a brief history of their development is followed by a description of some technical details…
The effective experimental critical exponents \ensuremath{\alpha}, \ensuremath{\gamma}, ${\ensuremath{\nu}}_{\mathrm{\ensuremath{\parallel}}}$, and ${\ensuremath{\nu}}_{\mathrm{\ensuremath{\perp}}}$ obtained from high-resolution heat capacity and x-ray studies of nematic--smectic-A transitions in liquid crystals are p…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalytic Acyl Transfer by a Cyclic Porphyrin Trimer: Efficient Turnover without Product InhibitionLindsey G. Mackay, R. Stephen Wylie, and Jeremy K. M. SandersCite this: J. Am. Chem. Soc. 1994, 116, 7, 3141–3142Publication Date (Print):April 1, 1994Publication History Publi…
Within the thermodynamics of irreversible processes and the concept of in ternal state variables, a general phenomenological theory of coupled damage-elasto- (visco)plasticity at small strains is given. The state variables (external and internal) are considered to evolve phenomenologically according to competing proce…
Biomimetics is a newly emerging interdisciplinary field in materials science and engineering and biology in which lessons learned from biology form the basis for novel technological materials. It involves investigation of both structures and physical functions of biological composites of engineering interest with the…
The active form of pyruvate formate-lyase (PFL) from Escherichia coli contains a glycyl radical in position 734 of the polypeptide chain which is produced post-translationally by pyruvate formate-lyase-activating enzyme (PFL activase) using S-adenosylmethionine (AdoMet) and dihydroflavodoxin as co-substrates (Wagner,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhase Behavior and Association Properties of Poly(oxypropylene)-Poly(oxyethylene)-Poly(oxypropylene) Triblock Copolymer in Aqueous SolutionZukang Zhou and Benjamin ChuCite this: Macromolecules 1994, 27, 8, 2025–2033Publication Date (Print):April 1, 1994Publication History Pu…
The pressure and temperature dependent viscosities of two glass forming liquids, glycerol and dibutyl phthalate (DBP), have been studied in the range P=0–3 GPa, T=0–125 °C, and η=101–1010 cP. These studies were made using a combination of a rolling-ball and a centrifugal-force diamond anvil cell viscometer. The majori…
Diffraction of light by periodic gratings is analyzed with a characteristic-matrix formalism based on a rigorous coupled-wave approach. This formalism is particularly convenient for modeling the diffraction by nonuniform periodic structures. In order to overcome numerical difficulties that are due to inhomogeneous eig…