Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMeasurements and calculations of the hyperpolarizabilities of atoms and small molecules in the gas phaseDavid P. Shelton and Julia E. RiceCite this: Chem. Rev. 1994, 94, 1, 3–29Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published in…
Local atomic structures of Zr and dopant cations in zirconia solid solutions with Fe 2 O 3 , Ga 2 O 3 , Y 2 O 3 , and Gd 2 O 3 have been determined. The Zr ions in both partially stabilized tetragonal and fully stabilized cubic zirconia have their own characteristic structures which are dopant‐independent. The dopant…
By making use of the fact that domain-wall motions do not produce volumetric changes, an experimental method is introduced to directly and quantitatively determine the domain-wall and intrinsic contributions to the piezoelectric and dielectric responses of a ferroelectric material. Utilizing this method, the contribut…
In a brief history of the discovery of antiferroelectricity in liquid crystals, the important role played by tristable switching, i.e. an electric field induced phase transition from antiferroelectric SCA* to ferroelectric SC*, has been emphasised and the antiferroelectric herringbone structure of SCA* has been presen…
Oxidation Catalysis by Metalloporphyrins - A Historical Perspective The Mechanisms of Reaction of Hypervalent Oxochromium, Iron and Manganese Tetraphenylporphyrins with Alkenes Theoretical Studies of Oxometalloporphyrins and Their Reactions with Organic Substrates Cytochrome P450 Model Systems Heme Proteins in Prostag…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT"N-Confused Porphyrin": A New Isomer of TetraphenylporphyrinHiroyuki Furuta, Tsutomu Asano, and Takuji OgawaCite this: J. Am. Chem. Soc. 1994, 116, 2, 767–768Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inissue 1 January 199…
We have developed a new class of magnetic resonance imaging contrast agents with large proton relaxation enhancements and high molecular relaxivities. The reagents are built from the polyamidoamine form of Starburst dendrimers in which free amines have been conjugated to the chelator 2-(4-isothiocyanatobenzyl)-6-methy…
M. J. Zaworotko, Chem. Soc. Rev., 1994, 23, 283 DOI: 10.1039/CS9942300283
An ultralarge pore titanium silicate with MCM-41 structure has been prepared by direct hydrothermal synthesis; this material gives rise to useful catalysts for the selective oxidation of small and large organic compounds.
An improved computational constitutive model for brittle materials is presented. It is applicable for brittle materials subjected to large strains, high strain rates and high pressures, and is well‐suited for computations in both Lagrangian and Eulerian codes. The equivalent strength is dependent on the intact strengt…
The eukaryotic fatty acid desaturases are iron-containing enzymes that catalyze the NAD-(P)H- and O2-dependent introduction of double bonds into methylene-interrupted fatty acyl chains. Examination of deduced amino acid sequences for the membrane desaturases from mammals, fungi, insects, higher plants, and cyanobacter…
The methods for producing magnesium are briefly described and its alloying behaviour is discussed with particular reference to the roles of individual alloying elements. Cast and wrought alloys are considered separately and particular attention is paid to microstructure–property relationships and corrosion behaviour.…
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We have measured the thickness dependence of the glass-transition temperature (Tg) of thin films of poly(methyl methacrylate)(PMMA) by using spectroscopic ellipsometry to detect the discontinuity in thermal expansivity occurring at Tg. We studied films on two surfaces: the native oxide of silicon, and evaporated gold.…
The paper will trace the evolution of understanding related to the modification of sharp ferroelectric phase transition behavior that occurs in composition systems which exhibit diffuse and relaxor ferroelectric properties. The focus will be primarily upon the perovskite structure families where cations of different v…
ADVERTISEMENT RETURN TO ISSUEPREVArticleThird-Order Nonlinear Optical Response in Organic Materials: Theoretical and Experimental AspectsJ. L. Bredas, C. Adant, P. Tackx, A. Persoons, and B. M. PierceCite this: Chem. Rev. 1994, 94, 1, 243–278Publication Date (Print):January 1, 1994Publication History Published online1…
Domain aspects of multi-ferroics are reviewed, i.e. of materials, in which two or all three of the properties ‘ferroelectricity.’ ‘ferromagnetism’ and ‘ferroelasticity’ occur simultaneously in the same phase, and in which the magnetic point group has been reliably established by magnetoelectric, optical, dielectric, m…
During the last three years the authors have developed a new technique which allows to construct ultrathin multilayer assemblies by consecutive adsorption of anionic and cationic polyelectrolytes out of aqueous solution. The technique allows the easy construction of functional multicomponent films that can be deposite…
Greek.- Numeric.- Tables.- 1a. Standard (based on ISO and ASTM) abbreviations of plastics.- 1b. Standard (based on ISO and ASTM) abbreviations of rubbers.- 2a. Letters used to modify abbreviations for plastics (ISO and ASTM).- 2b. Commonly-used letters used to modify abbreviations for plastics (i.e. in addition to Tab…
Abstract During our years in high school, we have all been taught that matter only exists in three states: solid, liquid, and gas. However, this is not quite correct. In particular, certain organic materials do not show a single transition from solid to liquid, but rather a cascade of transitions involving new phases.…