Advanced electronic packaging materials
This proceeding contains papers on advanced electronic packaging materials. Included are the following topics: Optoelectronics, Polymers, Composites, Aluminum Nitride, and Metallization.
Materials Literature
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Electrochemical Codeposition of Gallium and Arsenic from a Room Temperature Chlorogallate Melt
An electrodeposition process by which gallium arsenide can be formed at room temperatures is reported. Gallium and arsenic can be codeposited from a room temperature melt comprised of and ImCl (1‐methyl‐3‐ethylimidazolium chloride) and an solute. Codeposition is studied over a potential range of 0 to −2V relative to a…
Detection of Joule heating before dielectric breakdown in polyethylene films
Local Joule heating in polyethylene films was detected at room temperature before dielectric breakdown under DC field. When a high-temperature point appeared in a film, the conduction current increased with time. The final breakdown occurred at the point of the highest temperature. This concurrence of the breakdown po…
Recent advances in the chemistry of gas phase transition metal clusters
Abstract
Recent advances in the one- and two-dimensional magnetic measurement technique for electrical sheet steel
The problems connected with measuring the magnetic properties of electrical sheet steel under the condition of one-dimensional (alternating) and two-dimensional excitation (circular, elliptic, and alternating with rotation of the direction) are surveyed. Regarding the classical case of one-dimensional excitation, the…
Time-resolved observation of isothermal phase transition of liquid crystals triggered by photochemical reaction of dopant
A mixture of 4-butyl-4′-methoxyazobenzene (BMAB) and 4-n-pentyl-4′-cyanobiphenyl (5CB)([BMAB]/[5CB]= 0.03) undergoes an isothermal phase transition on pulse irradiation at 355 nm (10 ns fwhm), in which the relaxation from the nematic to the isotropic phase was completed within ∼ 100 ms as shown by time-resolved birefr…
Molecular-beam studies of methanol partial oxidation on Cu(110)
A thermal molecular-beam system has been used to examine the oxidative dehydrogenation of methanol on the Cu(110) surface. The initial sticking probability for oxygen is 0.21 (±0.01) at room temperature and shows a near linear dependence of sticking coefficient on atomic coverage due to an island growth mechanism with…
Rheology of weakly interacting colloidal particles at high concentration
The paper describes an experimental study of the rheology of concentrated latex under conditions where a secondary miminum in the interparticle pair potential is expected. Particular attention is given to the Bingham stress σB derived from steady-shear-flow data, which is taken as a measure of the additional or extra…
Power losses under sinusoidal, trapezoidal and distorted induction waveform
A setup has been developed by which one can measure magnetic power losses under arbitrary induction waveforms in the frequency range 1 Hz>
Diffusion of Xe in UO2
In this paper we present the results of atomistic simulation studies regarding aspects of the diffusion behaviour of Xe in UO2. The effects of a variable lattice stoichiometry and the charge state of the Xe are considered. It is found that although the sites at which Xe atoms are trapped differ markedly with stoichiom…
A novel series of heterotrinuclear complexes with a tris(dimethylglyoximato)metal( II ) anion as bridging ligand. Structure of the Fe III Cu II Fe III complex with S= 9/2 ground state
A series of linear heterotrinuclear complexes with a tris(dimethylglyoximato) metal(II) as bridging ligand, [LFeIII{µ-(dmg)3MII}FeIIIL](ClO4)2(M = Zn, Cu, Ni, Co, Fe, Mn), where L represents the cyclic triamine 1,4,7-trimethyl-1,4,7-triazacyclononane, has been synthesized and characterized by X-ray crystallography and…
Charge-transfer complexes of tetracyanoethylene with cycloalkanes, alkenes, and alkynes and some of their aryl derivatives
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharge-transfer complexes of tetracyanoethylene with cycloalkanes, alkenes, and alkynes and some of their aryl derivativesJohn E. Frey, Anne M. Andrews, Daniel G. Ankoviac, Douglas N. Beaman, Louis E. Du Pont, Thomas E. Elsner, Susan R. Lang, Marian A. Oosterbaan Zwart, Rona…
Solubility of hydrogen in metals
Abstract
Thermodynamic investigation of the CaO-Al_2O_3-CaCO_3-H_2O closed system at 25℃ and the influence of Na_2O
The solubilities of calcium hemicarboaluminate, calcium monocarboaluminate and calcium tricarboaluminate have been determined and the equilibrium phase diagram for the CaO-Al 2 O 3 -CaCO 3 -H 2 O closed system at 25°C has been calculated. Six isothermally invariant points have been located involving six stable hydrate…
A facile preparation of a self-doped conducting polymer
A self-doped conducting polymer having alkanesulphonic acid groups on polythiophene has been directly synthesized from sodium 3-(3-thienyl)propanesulphonate 3 by chemical polymerization with FeCl3 in an aqueous medium; the resulting acid form of this polymer after work-up shows highly self-doped behaviour both in wate…
4,10-Dinitro-2,6,8,12-tetraoxa-4,10-diazatetracyclo[5.5.0.05,903,11]dodecane
Glyoxal condensed with 1,4-diformyl-2,3,5,6-tetrahydroxypiperazie in the presence of sulfuric and nitric acids to give the title compound.We wish to repon 4.10-diniuo-2,6,8,12-letraoxa-4,lO-diazatetracyclo[5.5.0.~~~O~~'~ldodecan (2) as the fxst example of a dioxaazepane and the densest dinitramine (including dinitrami…
Kinetics of diamagnetic phase transitions
The kinetics of first-order diamagnetic phase transitions into a Condon domain phase, which may occur in normal metals under a strong magnetic field, is considered. Expressions for profile, velocity, and width of the interface between the homogeneous and diamagnetic domain phase are obtained. Critical sizes of cluster…
Fission gas release during post irradiation annealing of BWR fuels.
Uranium dioxide fuels irradiated in a commercial BWR during 1 to 4 cycles (burn-up: 6–28 GWd/t) have been annealed in an out-of-pile condition and the release rate of 85Kr was measured continuously. The annealing temperature ranged 1,500–1,800°C. The effects of temperature and burn-up have been studied on burst releas…
The influence of morphology on electrical tree initiation in polyethylene under AC and impulse voltages
AC and impulse voltages were applied to needle electrode specimens modeling the interface of the semiconducting layer and insulation of XLPE (cross-linked polyethylene) cables. TEM (transmission electron microscope) photographs of minute trees (>
Structure and behaviour of Ru3(CO)12 supported on inorganic oxide surfaces, studied by EXAFS, infrared spectroscopy and temperature-programmed decomposition
The structure and behaviour of Ru3(CO)12 supported on inorganic oxides such as V2O5, SiO2, TiO2, Al2O3, K-Al2O3, MgO and MnO2 have been studied by means of EXAFS, IR and TPD. Ru3(CO)12 was physisorbed on V2O5, SiO2, and TiO2, whereas [Ru3(CO)10(µ-H)(µ-O)] and [HRu3(CO)11]– were formed on Al2O3 and the basic supports M…