Materials Literature
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In order to evaluate whether the existing design of submerged nozzle is reasonable or not, the simulation test on liquid level fluctuation and impact depth of flow in 230 mm x (900 ~2 150) mm mold with casting speed 0. 8 ~ 1.7 m/min is earned out by using geometric similarity 1: 2 water model. Results show that for cu…
Based on the penetration theory, a kinetic model for oxygen transfer between molten slag and liquid steel (luring protective gas electroslag remelting process is established, and remelting test of die steel S136 (/% : 0.39C, 0.26Si, 0.43Mn, 0.020P, 0.018S, 13.37Cr, 0.21Mo, 0.34V) by a 50 kg electroslag remelting unit…
The origin of calcium treatment of molten steel in ladle and adding calcium method as well as developed gas rotary feeding wire lance and high-density cored-wire with elliptic section are presented in this article. It is suggested that using the experience of welded pipe forming machine the technical revamp of cored-w…
In accordance with inclusion defects occurred on cold rolled sheet of 430, 0C113R, 409 etc. ferrite stainless steels, the effect of basicity (1. 10 ~ 5. 98) of tundish covering flux on cleanliness of steel is studied, and the change of basicity, Al2O3and SiO2content in tundish covering flux with basicity R = 5. 98 dur…
The three dimensional thermo-mechanical coupling model of temperature field for medium and heavy plate during straightening process is established by finite element software ABAQUS. The temperature distribution and change of temperature of 20 mm plate with initial temperature 520 ℃ and 55 mm plate with initial tempera…
The effect of solid solution treatment at 1 000 ~ 1 150 Y on structure and mechanical properties of alloy GH4700 (/% : 0. 05C, 25Cr, 20Co, 1. 65Nb, 1. 47A1, 1. 69Ti, bal Ni) has been studied. Results show that the tensile, yield strength and elongation of 4>89 mm x 15 mm GH4700 alloy tube extruded at 1 180 °C , air co…
Topological insulators (TIs) are bulk insulators that possess robust helical conducting states along their interfaces with conventional insulators. A tremendous research effort has recently been devoted to Tl-based heterostructures, in which conventional proximity effects give rise to a series of exotic physical pheno…
In the three-dimensional topological insulator (TI), the physics of doped semiconductors exists literally side-by-side with the physics of ultrarelativistic Dirac fermions. This unusual pairing creates a novel playground for studying the interplay between disorder and electronic transport. In this mini-review, we focu…
We propose new topological insulators in hexagonal wurtzite-type binary compounds based on the first principles calculations. It is found that two compounds AgI and AuI are three-dimensional topological insulators with a naturally opened band-gap at Fermi level. From band inversion mechanism point view, this new famil…
Vortices in magnetic superconductors polarize spins nonuniformly and repolarize them when moving. At a low spin relaxation rate and at low bias currents, vortices carrying magnetic polarization clouds become polaron-like and their velocities are determined by the effective drag coefficient that is significantly bigger…
We study numerically the thermoelectricity of the classical Wigner crystal placed in a periodic potential and being in contact with a thermal bath modeled by the Langevin dynamics. At low temperatures the system has sliding and pinned phases with the Aubry transition between them. We show that in the Aubry pinned phas…
We study the nonlinear interfacial thermal transport across atomic junctions by the quantum self-consistent mean-field (QSCMF) theory based on the nonequilibrium Green's function approach; the QSCMF theory we propose is very precise and matches well with the exact results from quantum master equation. The nonlinearity…
Single-parameter adiabatic charge pumping, induced by a nearby radio-frequency antenna, is achieved in suspended carbon nanotubes close to the mechanical resonance. The charge pumping is due to an important dynamic adjustment of the oscillating motion to the antenna signal and it is different from the mechanism active…
By introducing a strain rate $\dot \in $ generated pseudo-electric field E ∝ ħ $\dot \in $ , we discuss a magnetic response of a plastically deformed graphene. Our results demonstrate the appearance of dislocation induced paramagnetic moment in a zero applied magnetic field. More interestingly, it is shown that in the…
Multiferroic materials, in which ferroelectric and magnetic ordering coexist, are of fundamental interest for the development of multi-state memory devices that allow for electrical writing and non-destructive magnetic read-out operation. The great challenge is to create multiferroic materials that operate at room-tem…
The speed of silicon-based transistors has reached an impasse in the recent decade, primarily due to scaling techniques and the short-channel effect. Conversely, graphene (a revolutionary new material possessing an atomic thickness) has been shown to exhibit a promising value for electrical conductivity. Graphene woul…
Over the past two decades, many types of natural and synthetic polymer-based micro- and nanocarriers, with exciting properties and applications, have been developed for application in various types of tissue regeneration, including bone, cartilage, nerve, blood vessels, and skin. The development of suitable polymers s…
In recent years, liposomes have been employed with growing success as pharmaceutical carriers for antineoplastic drugs. One specific strategy used to enhance in vivo liposome-mediated drug delivery is the improvement of intracytoplasmic delivery. In this context, pH-sensitive liposomes (pHSLip) have been designed to e…
Silver is a strong antibiotic that is increasingly incorporated into consumer products as a bulk, salt, or nanosilver, thus potentially causing side-effects related to human exposure. However, the fate and behavior of (nano)silver in the human body is presently not well understood. In order to aggregate the existing e…
In this paper we present a rapid and simple onepot method to obtain gold nanoparticles functionalized with folic acid using a photochemistry method. The bioconjugate folic acid-gold nanoparticle was generated in one step using a photo-reduction method, mixing hydrogen tetrachloroaurate with folic acid in different rat…