Materials Literature
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Application of a Scale Inhibitor Squeeze Model To Improve Field Squeeze Treatment Design K.S. Sorbie; K.S. Sorbie Heriot-Watt U. Search for other works by this author on: This Site Google Scholar MingDong Yuan; MingDong Yuan Heriot-Watt U. Search for other works by this author on: This Site Google Scholar M.M. Jordan…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Weight Dependence of the Viscoelastic Properties of Polystyrene-Based IonomersJoon-Seop Kim, Katsuyuki Yoshikawa, and Adi EisenbergCite this: Macromolecules 1994, 27, 22, 6347–6357Publication Date (Print):October 1, 1994Publication History Published online1 May 200…
We make a theoretical study of the chevron and tilted structures in the smectic-A phase of a liquid crystal. These structures have been observed to occur in cells in which the director is oriented in the plane of the wall. We examine the hypothesis of Limat and Prost [Liq. Cryst. 13, 101 (1993)] that the layer bucklin…
The reversible photoisomerization and the thermal isomerization of azobenzene-based (Az.b.) groups covalently bound to (meth)acrylic (co)polymers were investigated in thin films. For the amorphous polymers it was found that a broad range of the thermal cis --> trans isomerization rates could be obtained by varying…
Abstract An efficient method for quantitative XPS analysis is the so‐called multiline approach. This method does not require standards, it takes into account the instrumental and matrix effects and it derives quantitative information from statistical analysis of all photoelectron intensities visible in the spectra. On…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Motion of Isolated Polyethylene Chains in the Solid StateFrederic C. Schilling, Karl R. Amundson, and Piero SozzaniCite this: Macromolecules 1994, 27, 22, 6498–6502Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published iniss…
We have studied (LuC${)}_{2}$(${\mathrm{Ni}}_{2}$${\mathrm{B}}_{2}$) and (LuC)(${\mathrm{Ni}}_{2}$${\mathrm{B}}_{2}$) at ambient and high pressures. Superconductivity was discovered in (LuC${)}_{2}$(${\mathrm{Ni}}_{2}$${\mathrm{B}}_{2}$) at 2.9 K. Pressure was found to suppress both the electrical resistivity and the…
The spreading of a thin drop of fluid that partially wets a plane surface is calculated. Capillarity, slip, and intermolecular forces are included in the model, and it is shown that a complete solution is possible without having to exclude the vicinity of the contact line and without having to assume the dynamic behav…
Superplastic SiAlON's of the nominal composition Y m /3 ‐Si 12‐( m + n ) AL m + n O n N 16– n are reported in this study using a transient‐phase‐forming approach. They encompass the fields of single‐phase α′‐SiAlON, single‐phase β′‐SiAlON, and their two‐phase mixtures. Excellent formability is obtained at 1550°C for t…
Grain boundary engineering is based on the fact that special grain boundaries (i.e. low Σ CSL) may have beneficial physical and chemical properties. It is now possible to increase and characterize the fraction of low Σ interfaces in polycrystalline materials, thereby improving their bulk properties by controlling the…
Results of optical-absorption experiments on heavily irradiated NaCl single crystals are presented. The dose rates were between 4 and 250 Mrad/h; the doses between 1 and 7 Grad. The irradiation temperatures were in the range of 20--150 \ifmmode^\circ\else\textdegree\fi{}C. Because of the intense optical bands, the thi…
We argue that the possibility to observe a stable biaxial nematic phase in a binary \nmixture of prolate and oblate hard particles is seriously limited by the existence of entropydriven \ndemixing. This result follows from a simple Onsager-type density functional theory. An \nimportant feature15 the coupli…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of Bromide Oxidation by (Oxalato)oxodiperoxomolybdate(VI)Martha S. Reynolds, Steven J. Morandi, James W. Raebiger, Sean P. Melican, and Sean P. E. SmithCite this: Inorg. Chem. 1994, 33, 22, 4977–4984Publication Date (Print):October 1, 1994Publication History Publish…
The evolving realm of inorganic chemistry. Part 1 Co-ordination chemistry: an introduction to co-ordination chemistry structures of co-ordination compounds bonding theories for co-ordination compounds rates and mechanisms of reactions of co-ordination compounds applications of co-ordination compounds. Part 2 Solid-sta…
A new type of grafted polysiloxane polymer is described in which an aryldiamine\nsubstituent, [CsH3(CHzNMe2)2-2,61-, provides a pendant terdentate ligand environment for\na catalytically active (0rgano)nickel center. The novel strategy employed involves initial\ngrafting of the aryl bromide 5-amino-2-bromo-1,3-bis[(di…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOn the Preparation of Organosilicon .mu.-Spheres: A Polycondensation in .mu.-Emulsion?Frank Baumann, Manfred Schmidt, Bernward Deubzer, Michael Geck, and Jochen DauthCite this: Macromolecules 1994, 27, 21, 6102–6105Publication Date (Print):October 1, 1994Publication History…
The dielectric properties of (Pb 1– x X x ) (Zr 0.7 Ti 0.3 )O 3 (X = Ca, Sr, Ba) ceramics (abbreviated PXZT) were investigated for applications to multilayer ceramic capacitors (MLCs) with dielectric layers thinner than 10 μm. The dissipation factors for MLCs with 5‐μm‐thick dielectric layers were estimated from those…
We have coupled electron paramagnetic resonance (EPR) and polarization–voltage measurements to understand the effects of reducing ambients on the remanent polarization and density of paramagnetic centers in BaTiO 3 , single crystals. Two types of reducing ambients were explored; one was done under vacuum (slightly red…
The copper(II) complex of the N4S2 encapsulating ligand 1-methyl-8-ammonio-3,13-dithia-6,10,16,19-tetraazabicyclo-[6.6.6]icosane, [Cu(AMN(4)S(2)sarH)](3+), is reported. Crystals of the complex are monoclinic, of space group P2(1)/a (Z = 4, a = 16.463(3) Angstrom, b = 11.073(3) Angstrom, c = 17.138(3) Angstrom, beta =…
The effects of compressive deformation on the grain boundary characteristics of fine‐grained Y‐TZP have been investigated using surface spectroscopy, impedance analysis, and transmission electron microscopy. After sintering at low temperature (1150°C), the grain boundaries are covered by an ultrathin (1nm) yttrium‐ric…