Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Mechanics for Coordination Complexes: The Impact of Adding d-Electron Stabilization EnergiesVeronica J. Burton, Robert J. Deeth, Christopher M. Kemp, and Phillip J. GilbertCite this: J. Am. Chem. Soc. 1995, 117, 32, 8407–8415Publication Date (Print):August 1, 1995P…
The nucleation of a lamellar phase from a supercooled homogeneous phase in a fluctuation-driven first-order transition is studied, based on a phenomenological free energy due to Brazovskii (Zh. Eksp. Teor. Fiz. 68, 175 (1975) [Sov. Phys. JETP 41, 85 (1975)]). The absence of phase coexistence in the corresponding mean-…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-State 17O Magic-Angle and Dynamic-Angle Spinning NMR Study of the SiO2 Polymorph CoesiteP. J. Grandinetti, J. H. Baltisberger, I. Farnan, J. F. Stebbins, U. Werner, and A. PinesCite this: J. Phys. Chem. 1995, 99, 32, 12341–12348Publication Date (Print):August 1, 1995Pu…
Visible electroluminescence (EL) has been reported from semitransparent Au film/extra thin Si-rich silicon oxide film/p-Si diodes at room temperature. The Si-rich silicon oxide films, with thickness of about 40 Å, were grown using the magnetron sputtering technique. At forward bias of 4 V, EL spectra with peak energy…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCoexistence of Magnetic and Delocalized Electrons in Hybrid Molecular Materials. The Series of Organic-Inorganic Radical Salts (BEDT-TTF)8[XW12O40](solv)n (X = 2(H+), BIII, SiIV, CuII, CoII, and FeIII; solv = H2O, CH3CN)Carlos J. Gomez-Garcia, Carlos Gimenez-Saiz, Smail Trik…
The variational boundary integral method of Xu and Ortiz is taken as a basis for studying dislocation nucleation from atomically sharp cracks under combined mode I-mode II loading. The tension-shear potential of Rice et al. is extended to allow for skewness in the shear resistance curve and to account for the surface…
The absolute lattice parameters of single- and polycrystalline materials have been measured to within a few parts per million with a high-resolution diffractometer. The problems associated with 'zero errors' and sample centring on the goniometer are eliminated and high precision is achieved by virtue of the exceedingl…
Temperature-dependent static magnetization, ac magnetic susceptibility, and electrical-resistivity measurements of single-crystal ${\mathrm{DyNi}}_{2}$${\mathrm{B}}_{2}$C reveal bulk superconductivity below ${\mathit{T}}_{\mathit{c}}$=(6.2\ifmmode\pm\else\textpm\fi{}0.1) K. This ${\mathit{T}}_{\mathit{c}}$ is well bel…
Understanding the nonlinear relationship between neutron or x-ray reflectance and the scattering-length-density (SLD) profile of a surface film is important for valid and efficient data inversion in reflectivity studies of material films, surfaces, and interfaces. For this reason, a systematic analysis is made of the…
The triple point smectic-C--smectic-F--hexatic-B (C-F-B) has been found in binary mixtures of THl-n (thienyl-enaminoketone derivatives) compounds with different length of molecular terminal chains n. Differential scanning calorimetry (DSC), x-ray scattering, and optical studies show that this point is a multicritical…
Gallium is a metal that literally melts in your hand. It has low toxicity, near-zero vapor pressure, and a viscosity similar to water. Despite possessing a surface tension larger than any other liquid (near room temperature), gallium can form nonspherical ...Read More
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRaman and Infrared Study of the Polymer Electrolytes Formed by Poly(propylene oxide) with Sn(CF3SO3)2 and Pb(CF3SO3)2Pehr-Aake Bergstroem and Roger FrechCite this: J. Phys. Chem. 1995, 99, 33, 12603–12611Publication Date (Print):August 1, 1995Publication History Published on…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLattice oxygen mobility and structural stability of Ni and Cu octahedral molecular sieves having the cryptomelane structureYuan-Gen Yin, Wen-Qing Xu, Steven L. Suib, and C. L. O'YoungCite this: Inorg. Chem. 1995, 34, 16, 4187–4193Publication Date (Print):August 1, 1995Public…
Abstract In general, segmented polyurethane elastomers are prepared by reacting an isocyanate‐capped polyol prepolymer with a short‐chain diol chain extender, yielding an elastomer with hard segments of uniform size. However, the hard segment size will not be uniform if the polyurethane polymer is prepared by forming…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxidative Degradation of Poly(3-octylthiophene)Nils Ljungqvist and Thomas HjertbergCite this: Macromolecules 1995, 28, 18, 5993–5999Publication Date (Print):August 1, 1995Publication History Published online1 May 2002Published inissue 1 August 1995https://doi.org/10.1021/ma0…
The surface of epi layer p ‐ GaInP 2 electrodes was treated using 8‐quinolinol, cupferron, and ferrocyanide, producing a modified surface directed at varying the Helmholtz layer charge. Mott‐Schottky and photocurrent‐voltage measurements were carried out to determine if there was any shift in the flatband potential or…
Chromium (III) oxide (Cr 2 O 3 ) crystallizes at low temperatures from an amorphous material prepared by adding hydrazine monohydrate to an aqueous solution of Cr(NO 3 ) 3 ‐9H 2 O. Individual particles of Cr 2 O 3 tend toward a hexagonal morphology above 800°C. Well‐densified Cr 2 O 3 pellets (98.8% of theoretical den…
Abstract The results of thermal and oxidative stability studies are reported for one perfluorocyclo‐butane aromatic ether thermoset polymer. The polymer was prepared from 1,1,1‐tris (4‐trifluorovinyloxyphenyl)ethane by the thermal cyclodimerization of the trifluorovinyl either functionality, resulting in a network pol…
Flexoelectricity of pure Azpac (an HOAB-palladium complex) was studied using planar nematic layers under an in-plane electric field. Longitudinal domains were observed with a period inversely proportional to the applied d.c. electric field. These domains were considered as a first experiment manifestation of the theor…
Abstract Surface energy of EPDM, silicone rubber, and their 50 : 50 (by weight) blend during aging was determined by contact angle measurement using water and formamide as the probe liquids. The surface energy increases initially with aging time. The results are explained on the basis of the polar component of the sur…