Materials Literature
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Phase-field simulation of the dendrite growth of an Fe–0.15 mass%C binary alloy with fluid flow was carried out, and the mechanism of deflection of dendrites in the alloy system was examined. In the simulation, the primary arms growing in a flowing melt inclined toward the upstream direction, and the deflection angle…
Absolute ages of soils developed on the raised coral reef terraces in Kikai Island in the Ryukyus, Southwest Japan were estimated by using the mean rate of tectonic uplift and glacio-eustatic curve during late Quaternary in the previous paper. In order to estimate the soil age of other areas where the similar soils as…
PreviousNext No AccessSEG Technical Program Expanded Abstracts 2002Total magnetization direction and dip from multiscale edgesAuthors: Matthew HaneyYaoguo LiMatthew HaneyCenter for Wave Phenomena, Department of Geophysics, Colorado School of Mines, Golden, CO 80401 and Yaoguo LiGravity and Magnetics Research Consortiu…
In-situ observation of unidirectional solidification using transparent substance has been performed to investigate the growth direction of solid phase. Cell and/or dendrite, the preferred growth directions of which are not parallel to the heat flow direction, were observed with various solidification conditions. Dimen…
In order to understand the void formation mechanism in electroplated Cu interconnects used in Si-semiconductor devices, microstructure of Cu/CuO/Cu layered films which were prepared on the Si3N4/Si substrates by the sputter-deposition technique was observed by transmission electron microscopy (TEM) and scanning ion mi…
Reaction of [5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrinato]zinc with bipyridyl-type ligands leads to the formation of extended three-dimensional supramolecular architectures sustained by a concerted mechanism of metal–ligand (pyridyl-N⋯Zn) coordination and cooperative intermolecular (O–H⋯OH and O–H⋯N) hydrogen bond…
Rigid-rod vinyl ester resins represent an interesting family of materials. They can be synthesized starting from the corresponding epoxy resin. Due to their composition, they exhibit outstanding properties, such as heat and chemical resistance, high impact, and corrosion resistance. These features, combined with the e…
An argument is given intimating that, for nonsimple materials, the concepts of contact interaction and material symmetry, as well as the bridging concept of stress, should be carefully revised and generalized. .
CeF3 thin films have been deposited on Si(100) substrates by metal–organic chemical vapor deposition (MOCVD). The Ce(hfa)3·diglyme [Hhfa = 1,1,1,5,5,5-hexafluoro-2,4-pentanedione, diglyme = (CH3O(CH2CH2O)2CH3)] precursor has been adopted as a single source for both Ce and F components. This adduct has proved to be a g…
A review of the current understanding of the effect of crystal lattice defects on the low-frequency dielectric relaxation properties in single crystals and polycrystalline polar dielectrics is given. Special attention is paid to different long-term phenomena, found in dielectric experiments, such as a low frequency re…
Benzocyclobutene (BCB) polymer was developed at Dow Chemical in the late 1980's for microelectronics packaging and interconnect applications. Photo-definable BCB formulation was commercialized in 1994. The Dielectric polymer films produced from BCB formulations possess many desirable properties[1] [2] [3] [4] for micr…
As is well known, the unit element of a warp-knitted structure is the loop. It is therefore necessary to have either a physical or a geometrical description of warp-knitted loop configuration to represent it on the computer screen. In the work reported in this paper, a method was developed to obtain a three-dimensiona…
This paper presents experimental results relating the initial austenite grain size to bulk hardness, compressive yield stress (σ0.2%) and volume fraction of stress-induced ε martensite. It is shown that the bulk hardness obeys quite closely the Hall-Petch equation while the yield stress, σ0.2%, decreases with decrease…
Electric Double Layer Capacitance Performance of Porous Carbons Prepared by Defluorination of Polytetrafluoroethylene with Potassium , Yamada, Yoshio, Tanaike, Osamu, Liang, Tien-Tzu, Hatori, Hiroaki, Shiraishi, Soshi, Oya, Asao
The magnetic behaviour of Co–Al, Ni–Al, and Mg–Al hydrotalcites (HTlc) with a M2+/Al3+ molar ratio of 3 and carbonates in the interlayer, as well as the mixed oxides obtained after calcination at 823 K for 5 h, has been investigated by DC and AC magnetic susceptibility measurements and isothermal magnetisation. The sa…
The superplastic behavior of an Al–4.1%Mg–2.0%Li–0.16%Sc–0.07%Zr alloy (1421 Al) subjected to intense plastic straining by equal-channel angular extrusion (ECAE) was studied in the temperature interval 250–450°C at strain rates ranging from 1.4×10−5 to 1.4 s−1. The grain size after ECAE was about 0.8 \\micron and the…
A despolimerização de poli (tereftalato de etileno) -- PET - em água pura e em soluções aquosas 7,5M de ácido acético, ácido sulfúrico, acetato de sódio e hidróxido de sódio foi testada a 100ºC e pressão atmosférica, com o objetivo de obter ácido tereftálico. Foram ainda quantificadas diferenças relativas à influência…
Abstract We present the first package of Java classes specifically aimed at the handling of structural and biophysical problems. To enable object-oriented programming a basis of fundamental Java classes is required which deals with basic operations of vectors, matrices, amino acid sequences, crystal symmetries and PDB…
Dibenzo[g,p]chrysene, a new π-conjugated polycyclic aromatic hydrocarbon, has been found to function as the core fragment for the preparation of discotic liquid crystals. First two derivatives of this novel core were prepared by a palladium-catalyzed annulation reaction of diphenylacetylenes with 2-iodobiaryls, follow…
The crystal structure and magnetic analysis of a cyclic tetranuclear copper(II) complex with formula [Cu4(phen)4(glyOH)4](NO3)4·2H2O, where phen = 1,10-phenanthroline and glyOH = glycolate are described. Copper atoms are connected through bridging carboxylate groups from chelated glycolate units, forming a butterfly-t…