Materials Literature
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This paper concerns the eigenvalue embedding problem (EEP) of updating a symmetric finite-element model so that a few troublesome eigenvalues are replaced by some chosen ones, while the remaining large number of eigenvalues and eigenvectors of the original model do not change. Based on the theory established in [2], b…
A Reply to the Comment by P. Jóvári et al.Received 29 May 2009DOI:https://doi.org/10.1103/PhysRevLett.104.019602©2010 American Physical Society
Thin multilayer films of alternating ultrathin Ni and Ag layers (L(Ni)=11,15,30 Å, bulk and $L(\mathrm{Ag})=50~{\AA})$ have been prepared by evaporation in ultrahigh vacuum under controlled conditions and have been studied by the magnetic measurements. The critical temperature T C is studied as a function of the surfa…
A Comment on the Letter by Zhimei Sun, Jian Zhou, Andreas Blomqvist, Borje Johansson, and Rajeev Ahuja, Phys. Rev. Lett. 102, 075504 (2009). The authors of the Letter offer a Reply. (See also preceding Comment and Reply in this issue.)
An alloy with a chemical composition of Ti-45Al-5V (at.%) was synthesized by mechanical alloying in a Szegvari-type attritor from elemental powders of high purity. Before compaction, the powders were characterized by X-ray diffraction and scanning as well as transmission electron microscopy. The compaction of powders…
A coarse-grained, rigid-rod model that includes steric interactions and an internal dipole is used to study monolayers of surfactant molecules tethered to a flat interface. Monte Carlo simulations are performed in the canonical ensemble for a range of high-density configurations with varying degrees of dipole strength…
Michael addition of pyrrole to β-nitrovinyl compounds were carried out using microwave methodology. Monosubstituted pyrroles were obtained selectively in a major amount. Formation of novel product obtained during one of the reactions was explained by the double addition to nitrostyrene.
Calcium-dependent phosphatidylinositol-specific phospholipase C from Streptomyces antibioticus (saPLC1) catalyzes hydrolysis of phosphatidylinositol (PI) into inositol 1-phosphate by a unique mechanism involving formation of inositol 1,6-cyclic phosphate (1,6-IcP) as an intermediate. This work examines the rates and p…
This study was completed to determine the anisotropy in molybdenum disulfide, MoS2, \nthin films. The hexagonal crystal structure of MoS2 and recent results on tungsten diselenide, \nwith a similar structure, lead to the belief that MoS2 may exhibit ultralow thermal conductivity. \nThermal conductivities were measured…
The electronic structure near the top of the valence band and the bottom of the conduction band for Sr-doped LaScO 3 single crystal was investigated by X-ray absorption spectroscopy (XAS). The conduction band consists mainly of the Sc 3d state hybridized with the O 2p state. A defect-induced localized level is observe…
The effect of an organic additive on the surface roughness of a polycrystalline silicon (poly-Si) film was investigated by chemical mechanical polishing (CMP). The surface roughness of the polished poly-Si film was markedly reduced by adding 0.001 wt % hydroxyl ethyl cellulose (HEC) and then decreased slightly with fu…
A serious concern in the practice of heat treatment is the effect of surface contamination and the effectiveness of subsequent cleaning on the performance and appearance of the finished products. This study examined the effects of contamination on the appearance, hardness, carbon concentration, and retained austenite…
Quantum Theory of the Electron Liquid, by G.F. Giuliani and G. Vignale, Cambridge, Cambridge University Press, 2008, 800 pp., £35.00 (paperback), ISBN 978 0 521 52796 5. Scope: textbook. Level: gra...
Abstract A novel hydroxyl‐ethynyl‐arene (HEA) resin was synthesized via Aldol condensation and Sonogashira reaction. The structure of the obtained resin was confirmed by the techniques of mass spectroscopy (MS), gel permeation chromatography (GPC), proton nuclear magnetic resonance spectroscopy (1H‐NMR), Fourier trans…
The propagation of a hybrid vector polarization beam is experimentally investigated in an uniaxial birefringent quartz crystal. The hybrid beam can be expressed as a superposition of two orthogonal linearly polarized Laguerre-Gaussian modes of opposite topological charge. When propagating through the crystal, the beam…
Thermoplastic polyesters have been widely used in electrical and electronic equipment and a large number of articles on these materials have been published in the past several decades. Poly (ethyethylene-2,6-naphthalene dicarboxylate) (PEN) is a new aromatic polyester that presents high-performance physical and chemic…
Ceramic bearings working in liquid nitrogen are mainly lubricated by thin films transferred from the polytetrafluoroethylene (PTFE) based composite retainers. The thin films on silicon nitride ball surfaces are generated by the friction and interaction among the composite retainer, the balls, and the AISI 440C stainle…
In this paper, we present results of transmission electron microscopy studies on erbium silicide structures fabricated under various thermal conditions. A titanium cap has been used as a protective layer against oxidation during rapid thermal annealing of an erbium layer in a temperature range of 300-700 degrees C. Bo…
Emulsion stability simulations are used to estimate the coalescence time of one drop of hexadecane pressed by buoyancy against a planar water/hexadecane interface. In the present simulations, the homophase is represented by a big drop of oil at least 500 times larger than the approaching drop (1-10 microm). Both defor…
In order to optimize the use of some materials in electronic and microelectronic fields, the study of some of their properties is very important. Among these materials, we cite poly (ethylene naphtalate), PEN, which the description with a three-phase model is necessary to explain some of its dielectric behaviors, such…