Materials Literature
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M e th ods of abso lut e a nd re lati ve radi a nl a nd q ua ntum effi c ie ncy m eas ure me nts a re described fo r ultrav iole t , vis ibl e , ca thod e-ray, a nd xray exc ita tio ns. Da ta o n so me s ta nd a rd lumin esce nt ma te ri a ls a re gjve n.
Abstract The dispersion of surface plasmon‐polaritons and their associated fluctuation densities and electric fields are calculated for a spatially dispersive semi‐infinite electron plasma, with, parameters appropriate to the metallic state. The model is hydrodynamic and the electron density is assumed to be uniform a…
A theoretical analysis is performed to determine the intrinsic variables which affect the green strength of ideal dry bodies held together by organic binders. The parameters which influence strength (i.e. types of bonds formed, the amount of binder, the density of the ceramic, the packing density, and the cohesive or…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChanges in lysozyme due to reactions with peroxidizing methyl linoleate in a dehydrated model systemJoseph Kanner and Marcus KarelCite this: J. Agric. Food Chem. 1976, 24, 3, 468–472Publication Date (Print):May 1, 1976Publication History Published online1 May 2002Published i…
The citric acid‐hydrogen peroxide‐water system has been developed for preferential etching of through photoresist masks. Etching rates depend strongly on the composition of the solution and on the crystal orientation of , with the rates in the order (111)B > (100) > (111)A. Flat‐bottomed holes were obtained for all co…
Expressions are derived for the estimation of the variance and the covariance in the deformation electron density qo/k - qc, for a centrosymmetric crystal structure. The uncertainty in the calculated density qc depends strongly on the distance to the nuclei. The uncertainty in the observed density qo is fairly constan…
Light scattering in antiferromagnetic crystals CoO, MnO, and $\ensuremath{\alpha}\ensuremath{-}\mathrm{MnS}$ has been studied experimentally in the temperature range from 6 to 300 K. The spectra showed peaks associated with one-magnon and two-magnon excitations. These structures diminished with increasing temperature,…
The dynamic critical exponents of classical liquids are studied on the basis of the mode coupling theory. The shear viscosity for the spatial dimensionality between two and four exhibits the weak power law divergence at a critical point, which was briefly reported in a previous paper. The non-Markoffian effects and th…
An anisotropic three-dimensional random walk model is developed and used to describe the frequency dependence of proton spin–lattice relaxation rates in several TCNQ salts. The triplet exciton system (φ3AsCH3) (TCNQ)2 at 145 °K is shown to display two-dimensional diffusive behavior. Measurements of the proton relaxati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemistry of the macrocyclic cobalt(II) complex, [Co(C22H22N4)]. Reactions with halogens, molecular oxygen, alkynes, and nitrilesMarvin C. Weiss and Virgil L. GoedkenCite this: J. Am. Chem. Soc. 1976, 98, 11, 3389–3392Publication Date (Print):May 1, 1976Publication History P…
Abstract When benzene or phenol are adsorbed on smectite containing Fe(III) or Cu(II) on the exchange complex, higher molecular weight products are formed. Evidence for these products is provided by mass spectroscopy. In the case of benzene most of the reaction products cannot be attributed to coupled benzene rings, w…
The first series of ferrocene derivatives exhibiting mesomorphic properties (substituted N-(p-benzoyloxybenzylidene) anilines la and 1b) has been synthesized for application in Mössbauer spectroscopy.
The capacitance-voltage ( C - V ) and forward biased current-voltage ( I - V ) characteristics, electroluminescence (E.L) and photovoltaic effect of GaSe–SnO 2 heterojunction diodes are measured. SnO 2 layer is deposited on the c -plane of GaSe by using the spray method. The C - V and I - V characteristics of these di…
High-temperature spin dynamics in the one-dimensional (1d) Heisenberg system ${(\mathrm{C}{\mathrm{H}}_{3})}_{4}$NMn${\mathrm{Cl}}_{3}$ (TMMC), is investigated through EPR and proton spin relaxation-time measurements. When the magnetic field $\stackrel{\ensuremath{\rightarrow}}{\mathrm{H}}$ is parallel to the chain ax…
We have observed crystal nucleation in a Lennard-Jones fluid by molecular dynamics. In a 108-particle system cooled slowly below its triple point, crystallization occurs at kT/ε=0.50 and 0.57 for densities Nσ3/V =0.90 and 0.91, respectively. For larger systems (256 and 500 particles) crystallization has also been achi…
Abstract Mathematical models are developed which account for simultaneous heat transfer, mass transfer, and chemical reaction in the oxidation of carbon monoxide over platinum containing monoliths. A two‐dimensional model is shown to predict unusual behavior of the Nusselt number in the presence of rapid reaction. How…
Tin (Sn4+) and zinc (Zn2+) derivatives of horse heart cytochrome c have been prepared and their optical spectra have been characterized. Zinc cytochrome c has visible absorption maxima at 549 and 585 nm and Soret absorption at 423 nm. Tin cytochrome c shows visible absorption maxima at 536 and 574 nm and Soret absorpt…
Results of proton dynamic nuclear polarization (DNP), nuclear spin-lattice relaxation, and ESR experiments in six YES: $^{168}\mathrm{Er}$ ($^{168}\mathrm{Er}$-doped yttrium ethyl sulphate) single crystals at 4.15 K and 9.1 GHz are reported here. This material approximates an inhomogeneously broadened (IHB) ESR line f…
A theory of strength loss for brittle surfaces in contact situations, developed in a previous paper for “blunt” indenters, is extended to the case of “sharp” indenters. A prior fracture mechanics analysis of crack growth beneath ideal cone indenters serves as the basis for predetermining the prospective surface degrad…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA proton nuclear magnetic resonance study of imidazole-iron bonding in low-spin ferric complexes with synthetic porphyrinsJames D. Satterlee and Gerd N. La MarCite this: J. Am. Chem. Soc. 1976, 98, 10, 2804–2808Publication Date (Print):May 1, 1976Publication History Publishe…