Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron transmission and inner-shell electron energy loss spectroscopy of acetonitrile, isocyanomethane, methyl thiocyanate, and isothiocyanatomethaneA. P. Hitchcock, M. Tronc, and A. ModelliCite this: J. Phys. Chem. 1989, 93, 8, 3068–3077Publication Date (Print):April 1, 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of excess charge on band energetics (optical absorption edge and carrier redox potentials) in small semiconductor particlesChong Yang Liu and Allen J. BardCite this: J. Phys. Chem. 1989, 93, 8, 3232–3237Publication Date (Print):April 1, 1989Publication History Publish…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMaking mercury-photosensitized dehydrodimerization into an organic synthetic method. Vapor-pressure selectivity and the behavior of functionalized substratesStephen H. Brown and Robert H. CrabtreeCite this: J. Am. Chem. Soc. 1989, 111, 8, 2935–2946Publication Date (Print):Ap…
Abstract A model is introduced for analyzing diameter variations occurring in glass fibers drawn from preforms. The heat transfer is shown to be radiation‐dominated, and approximate expressions for radiative exchange are developed. The expressions are used in the one‐dimensional governing equations for extensional flo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganometal hydroxide route to [(C5Me5)Rh]4(V6O19)H. K. Chae, Walter G. Klemperer, and V. W. DayCite this: Inorg. Chem. 1989, 28, 8, 1423–1424Publication Date (Print):April 1, 1989Publication History Published online1 May 2002Published inissue 1 April 1989https://pubs.acs.or…
The orientational distribution function of a poled, doped polymer film under stress is measured using polarized second-harmonic generation. The four interface nonlinear boundary conditions are solved, and both the magnitude of the second-order susceptibility and the ratio of the tensor components of the second-order s…
Reduced dimensionality and quantum confinement in conjugated organic and polymer structures enhance the effects of electron correlation on virtual electronic excitation processes and nonlinear-optical responses. A microscopic many-electron description of the third-order susceptibilities γijkl(−ω4; ω1, ω2, ω3) of conju…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRelaxation of self-entangled many-arm star polymersGary S. Grest, Kurt Kremer, S. T. Milner, and T. A. WittenCite this: Macromolecules 1989, 22, 4, 1904–1910Publication Date (Print):April 1, 1989Publication History Published online1 May 2002Published inissue 1 April 1989http…
Poly(vinylidene fluoride) (PVDF) transducers are well suited for use in high frequency pulse-echo ultrasound systems because of their high bandwidth. We analyze the design parameters of PVDF transducers operating in the 100 MHz range using the KLM transducer model. The effect of backing layers, electrode configuration…
The shear stress resistance of cultured human endothelium was investigated on 6 mm polytetrafluoroethylene vascular grafts. Endothelial cell attachment was promoted by precoating the grafts with fibrin glue, which contained human fibronectin and inhibitors of fibrinolysis (aprotinin and tranexam acid). To evaluate the…
Abstract A systematic study of the effect of surface pretreatment of cellulosic fibers and the processing time and temperature on the mechanical properties of the cellulose‐containing polypropylene was undertaken. Using non‐treated fibers, the elastic modulus increased gradually with the cellulose content, typically d…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBis(ethylenedioxy)tetrathiafulvalene: the first oxygen substituted tetrathiafulvaleneT. Suzuki, H. Yamochi, G. Srdanov, K. Hinkelmann, and F. WudlCite this: J. Am. Chem. Soc. 1989, 111, 8, 3108–3109Publication Date (Print):April 1, 1989Publication History Published online1 M…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT2,3,7,8,12,13,17,18-Octakis(.beta.-hydroxyethyl)porphyrin (octaethanolporphyrin) and its liquid crystalline derivatives: synthesis and characterizationBrian A. Gregg, Marye Anne Fox, and Allen J. BardCite this: J. Am. Chem. Soc. 1989, 111, 8, 3024–3029Publication Date (Print…
CdS and PbS clusters with sizes ranging from a few angstroms to 150 Å can be synthesized in polymers. The dependence of the band gap on the cluster size deviates from the prediction of a simple particle-in-a-box model owing to the breakdown of the effective-mass approximation. Instead, the dependence can be described…
Abstract The structure of synthetic nitro-5,10,15,20-tetraphenylporphyrinato(piperidine)cobalt(III) has been determined by X-ray diffraction method. The results revealed that the porphyrin plane is markedly distorted to nonplanar due to the steric interaction between the axial piperidine and the porphyrin core.
The effects of vanadium and other elements on the pitting resistance of an 18% chromium ferritic stainless steel (SS) with less than 168 ppm carbon and nitrogen are reported. Vanadium was added to the base alloy in the concentration range of 1 to 4%, alone and in combination with titanium, niobium, nickel, copper, sil…
Abstract An earlier thermo‐analytical study of black powder, using small sample masses and slow heating rates, has been extended to an examination of the behaviour of black powder under the less‐controlled conditions of ignition and combustion, by simultaneous measurement of temperature profiles and burning rates. Bur…
Abstract A group‐theoretical method within the framework of the Landau theory of phase transitions is proposed to obtain and analyse a complete set of critical (primary) and noncritical (secondary) order parameters condensing as a result of a phase transition (complete condensate). The principal problems that can be s…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe synthesis and structural characterization of the first gallacarborane sandwichMarc A. Bandman, Carolyn B. Knobler, and M. Frederick HawthorneCite this: Inorg. Chem. 1989, 28, 7, 1204–1206Publication Date (Print):April 1, 1989Publication History Published online1 May 2002…
Service loading imposed on engineering structures is often arbitrary or nonproportional. The paper presents an investigation of examining the effects of proportional and nonproportional loadings on the fracture behavior of mixed mode fracture. The anisotropic model of continuum damage mechanics capable of taking into…