Materials Literature
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The effects of nitrogen doping on the electromigration in molten (GST) were studied using an isolated-line structure. A change in composition and morphology in the GST line was observed with an increased duration of applied electrical stress. The diffusion rate of the constituent atoms in GST was decreased by N doping…
Existence of deteriorated insulators is a direct threat to the safety of power system operation.With the method combining simulation analysis and laboratory test,the space electric field distribution of overhang porcelain insulator string with and without deteriorated insulator was analyzed,and the analysis was focuse…
The use of Rhodopseudomonas palustris in biosynthesis of silver nanoparticles(AgNPs) emerges as a reli-able and eco-friendly approach in recent years.This report focuses on extracellular biosynthesis of AgNPs using cell filtrate of Rhodopseudomonas palustris.These nanoparticles were characterized by UV-vis spectrum,X-…
The cellulose content of agro-waste such as rice husk, maize cub, sorghum stalk and groundnut shell was experimentally determined using standard procedures, such as defattening, scouring and alpha cellulose test. The alpha cellulose content obtained for the various agro-wastes used are rice husk 43.33%, maize cub 62.9…
Hydrogen is usually trapped by vacancy, dislocation, grain boundary, precipitate and void in steels and it is easily released from these trap sites by heating the steels. However, the desorption temperature ranges vary according to the kinds of trap sites and they can be separated in principle, because the binding ene…
低酸素濃度下の圧縮ベントナイト中において10年間にわたる炭素鋼の浸漬試験を行った．XRD，XPSにより，ほとんどの条件で腐食生成物として2価鉄の炭酸塩化合物が確認された．炭酸塩濃度の高い溶液中では10年間の試験期間を通して他の条件よりも腐食量は小さくなった．また，50℃の条件では初期の腐食速度は80℃よりも小さいが，数年後にはむしろ大きくなった．これら炭酸塩濃度と温度の長期的な腐食速度への影響は鉄炭酸塩の炭素鋼表面への析出挙動が関連していると推察された．また，初期の腐食速度と皮膜の保護性の関係を調べると，高炭酸塩水溶液を除き初期の腐食速度が大きいほど皮膜の保護性は高くなる傾向が認められた．実験結果の外挿により炭素鋼の長期的な腐食量…
A blue-emitting phosphor was synthesized, and the photoluminescence properties of phosphors annealed in air, nitrogen, and reducing atmospheres were investigated. The photoluminescence intensity of the phosphor annealed in nitrogen atmosphere decreased to a low value and then suddenly increased to more than that of th…
In this paper, two kinds of ring-type microwave electric resonant structures were proposed, which were appropriately assembled with metal wires to form electromagnetic coupling units. The coupled structures have resonance response to the incident electromagnetic wave, and absorb the electric and magnetic fields strong…
A series of silicon-containing bismaleimide ((4,4 -bismaleimido phenoxy) silane, BMI) monomers has been synthesized by a two-step reaction for use as flame retardant or modifier of general resins. The synthesized BMI monomers are characterized by the 1H-, 13C- and 29Si-NMR spectroscopy and element analysis. These BMI…
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The anti-ulcer activity of Leucas lavandulifolia (Labiatae) has been carried out in albino rats. First of all study on small group of animals was conducted to know the approximate ulcer protective activity of various solvents extracts of the plant. Finally, the methanolic extract was selected out and taken for final s…
A new strategy for nanoparticles dispersion into polymer matrix is described in this work. In order to improve the properties of the polyester composites, multiwall carbon nanotubes were chemically coated by a molecular layer of iron (III) oxide. Following a two phases method that includes energy supply into polymer,…
Photovoltaic Hall effect — the Hall effect induced by intense, circularly-polarized light in the absence of static magnetic fields — has been proposed in Phys. Rev. B 79, 081406R (2009) for graphene where a massless Dirac dispersion is realized. The photovoltaic Berry curvature (a nonequilibrium extension of the stand…
Copper is one of the common metals used in the semiconductor backend process and wafer level packaging. A photo definable polymer layer is usually used to passivate the Cu metal. Acceptable adhesion between the polymer layer and Cu is a very important factor to achieve high reliability for the IC component. The purpos…
Degradation of leakage currents in various types of solid tantalum capacitors under steady-state bias conditions was investigated at temperatures from 105°C to 170°C and voltages up to two times the rated voltage. Variations of leakage currents with time under highly accelerated life testing (HALT) and annealing, ther…
In this paper a very simple but smart method to compensate the hysteresis of the sensor signal of a force sensor based on the magneto-elastic-effect is introduced. The compensation is tricky because it must meet some stringent requirements. First of all the hysteresis model has to be invertible and the calculation com…
In order to develop a noncontact surface resistivity measurement technique, the corona charging of a test material with simultaneous measurement of an induction current caused by a traveling surface charge was investigated using phi-type electrodes. The phi-type electrode consists of a high-voltage needle electrode th…
The molecular composites of ladder polyphenylsilsesquioxane (Ph-LPSQ) and alkoxy substituted polyisophthalamide (Cn-PA) are in situ prepared for the first time by supramolecular template directed synchronous two-step synthesis, mainly including (A) self-assembled ladder superstructure-based synchronous growth polymeri…
In this work, thinky mixing method was used to disperse multi-walled carbon nanotubes (MWCNT's) and carbon nanofibers (CNF's) in SC-1 epoxy either in isolation or in combination with 3-roll shear mixing. To achieve better dispersion, MWCNT mixing with SC-1 resin directly or pre-mixed with a solvent and then mixed with…
The plastic deformation behavior of forward extrusion, equal channel angular pressing, and a combination of the forward extrusion and equal channel angular pressing processes are analyzed by the finite element method. Simulations were carried out under realistic conditions by considering the strain hardening of the ma…