Materials Literature
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We investigate the topological phase transition in ultrathin films of three-dimension topological insulators, induced by a rotation of the exchange field. It is found that, as the exchange field rotates from the vertical to the horizontal orientation, there is a topological phase transition from a quantum anomalous Ha…
This study examines the twist design of chenille yarns from theoretical consideration. Four kind of chenille yarns were selected for practice validation. The results indicate that there was little deviation between the twist under theoretical approach and the actual tested values; linear density of centre yarn and pil…
In this work, we studied the nickel germano-silicide formation on thin SiGe layers epitaxially-grown on silicon substrate. Single crystal NiSiGe film with a thickness of 5.5nm was formed at 400°C and showed a low specific resistance of 30uΩcm. A thicker NiSiGe layer resulted from a thicker Ni showed poly-crystalline s…
This work is entitled to study the effect of hydrostatic extrusion, for different extrusion ratios on the mechanical properties of the extruded Al and Al/SiCPcomposites. An experimental hydrostatic extrusion device is designed and constructed for that purpose. Billets of Al and Al-SiCpcomposites with initial diameters…
This paper demonstrates characteristics of an oscillation of an attached bubble in ultrasonic field, compared with a free bubble. First, we experimentally investigated the resonant frequency of the attached bubble with radius of 50 - 250 μm, based on the analysis of steady or transient oscillation. The incident freque…
CuBr2 reacts with the Schiff base 4-bromo-2-[(pyridin-2-ylmethylimino)methyl]phenol (HL) and ammonium thiocyanate in absolute methanol to give the mononuclear copper(II) complexes [CuBrL] (1) and [CuL(NCS)] (2). Both complexes were characterized by elemental analysis, IR spectra, and single-crystal X-ray determination…
Since its discovery in 2004, graphene, a two-dimensional (2D) crystal of sp2-bonded carbon arranged in a honeycomb lattice, has rapidly emerged as an intriguing material for a broad spectrum of applications in nano-devices. Given its exceptional carrier transport characteristics, excellent thermal conductivity, and ro…
In this paper, we evaluate the influence of Quantum Confinement and Coulomb Blockade on the retention characteristics of charge trapping memory with incorporating Si nanocrystals into the charge trapping layer using the self-consistent simulator we developed. The effects of Quantum Confinement and Coulomb Blockade und…
In the present work the electrical properties of AlN polycrystalline films deposited at low temperatures by plasma-assisted molecular beam epitaxy (PA-MBE) are investigated. The polarization build-up during constant current injection as well as the depolarization process after the current stress have been investigated…
2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!
A Sn-SnO2/C nanocomposite was synthesized using the electrospinning method. Thermal analysis was used to determine the content range of Sn and SnO2 in the composite. The composite was characterized by X-ray diffraction, and the particle size and shape in the Sn-SnO2/C composite were determined by scanning and transmis…
RESUMEN: En este trabajo se evaluó el comportamiento electroquímico de esponjas metálicas de aluminio mediante técnicas electroquímicas como curvas de polarización y espectroscopia de impedancia electroquímica. Se realizaron ensayos en soluciones de NaCl de diferente concentración y bajo condiciones hidrodinámicas. La…
Thulium-doped fibers are renowned for their applications in high power fiber lasers at around 2 μm. It is despite the low quantum conversion efficiency of3F4level in thulium doped silica fibers, which is about 10% compared to ~100% quantum conversion efficiency of the ytterbium- and erbium-doped fibers, at around 1 μm…
High voltage (EHV and UHV) transmission facilitates transfer of large amount of power over long distances. However, due to the inherent geometry, the line and substation hardware of EHV and UHV class generate high electric fields, which results in local ionisation of air called corona discharges. Apart from producing…
Due to the effort of weight reduction in the manufacturing of vehicles, the application and therefore the joining of different materials such as plastics and metals plays more and more important role in the development of the joining processes nowadays. In this research work, the joining of PMMA plastic sheets and una…
Finite element analysis is performed on a mesh, based on computed geometry of a plain weave C/SiC composite with assumed internal stacking, to reveal the pattern of internal damage due to biaxial normal cyclic loading. The simulation encompasses intertow matrix cracking, matrix cracking inside the tows, and separation…
Background: Up to 30% of depressed patients are partially or totally resistant to antidepressant therapy. The administration of triiodothyronine (T3) to antidepressant nonresponders can be an effective augmentation strategy, although the mechanism is not fully understood. Methods: In vivo microdialysis was used to exa…
The authors provide their research findings concerning lightweight masonry mortars with hollow glass microspheres and antifreeze admixtures. These mortars are used in the construction of filler structures at negative temperatures. The application of multilayer filler structures causes reduction of their thermal homoge…
The algorithms for constructing generalized primitive matrices Galois and Fibonacci arbitrary order , the items belong to the prime field , . The examples of application of these matrices in the problems of the synthesis of generalized linear shift register with linear feedback and matrix analogue Diffie-Hellman.
Abstract Compared to traditional power plant materials, creep strength enhanced ferritic steels require new approaches to nondestructive examination and weld repair. The metallurgical complexity of these steels prompted EPRI to conduct research to define and/or improve the detection limits of ultrasonic testing techni…