Materials Literature
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Equiatomic CoPt and FePt thin films grown on MgO(111) substrates at temperatures (Ta) from room temperature (RT) to 400 °C were studied. Distinct phase evolution was observed. In CoPt films, a metastable phase of L11 appears at Ta = 250 °C prior to the formation of thermodynamic equilibrium L10 phase; whereas no inter…
Abstract The present contribution gives an overview of some of the technological aspects of low temperature thermochemical treatment of stainless steel. Examples of low temperature gaseous nitriding, carburising and nitrocarburising of stainless steel are presented and discussed. In particular, the morphology, microst…
The goal of tissue engineering is to synthesise substitutes that mimic the natural environment to help guide the growth of new functional biological tissue in vitro or in vivo. Tissue engineering relies heavily on the use of porous 3D scaffolds to provide a supportive environment for the regeneration of tissues and or…
Discharges in planar-type overdense plasmas caused by resonant excitation of surface plasmon polaritons (SPPs) are presented. The spatio-temporal evolution of surface waves of SPPs at the dielectric-plasma interface is reproduced numerically. It is found that different discharge light patterns are excited by different…
BACKGROUND: Calculation of the root mean square deviation (RMSD) between the atomic coordinates of two optimally superposed structures is a basic component of structural comparison techniques. We describe a quaternion based method, GPU-Q-J, that is stable with single precision calculations and suitable for graphics pr…
Copper canister is a central technical barrier for radioactive release from high level nuclear waste in the so called KBS-3 concept planned to be used in Finland and Sweden for disposal of spent nuclear fuel. Canisters will be placed in the granitic bedrock at about 400–500 m depth and surrounded by a layer of bentoni…
This paper presents a novel digital control technique for switched reluctance generators (SRGs). Voltage feedback control is used in the proposed approach. This control strategy can be implemented easily with both PWM and hysteresis switching schemes. The SRG is modeled in order to find the proper control parameters.…
Phenomenological model of an abnormal thermal field electron emission from the 2D nanoheterostructures of a kind: a conductor – a thin dielectric film, is offered and developed.
The feasibility of plasma cleaning of the multilayer mirrors used in 13.5-nm EUV lithography from carbon contaminations is studied. Experiments conducted in electrodeless plasma of the surface-wave low-pressure discharge in helium and hydrogen demonstrated the high rate, efficiency, and selectivity of this cleaning wi…
In this study, we report the growth and characterization of semipolar (1013) InN films grown on LaAlO3(112) substrate by metalorganic molecular beam epitaxy. InN films were grown at various substrate temperatures in the range of 465–540 °C. Structural and optical properties of semipolar InN were investigated by high r…
The proteolytic activity of a psychrotrophic strain of Burkholderia cepacia isolated from refrigerated raw milk was characterized. Bur. cepacia produced proteolytic activity during growth at refrigeration temperature, with maximum activity at pH 6-7. The enzyme showed relative thermal stability in the range 40-50°C du…
To understand the surface morphology evolution of fused silica induced by 10.6-μm CO 2 laser irradiation at different parameters, this paper reports that optical microscopy, profilometry, and hydrophilicity tests are utilized to characterize the surface structure and roughness of the laser irradiated area. The results…
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Transcranial current stimulation (tCS) is a method for modulating neural excitability and is used widely for studying brain function. Although tCS has been used on the rat, there is limited knowledge on the induced electric field distribution during stimulation. This work presents the finite element (FE) simulations o…
In recent years, with the increase of nonlinear loads drawing Nonsinusoidal currents, power quality distortion has become a serious problem in electrical power systems. Distortions in voltage and current wave-shapes can upset end-use equipment and cause other problems. Harmonics are a particularly common type of disto…
RF-LDMOS is the dominant RF power device technology in the cellular infrastructure market, having successfully displaced vertical MOSFETs and silicon bipolar transistors in the 1990s. A similar technology shift towards RF-LDMOS is occurring today in adjacent RF power markets such as UHF Broadcast, VHF Broadcast, L-Ban…
The BaF 2 -BiF 3 system was studied by the method of coprecipitation from aqueous solutions. The region of precipitation of single-phase nonoxygen powders was revealed (the atomic fraction of Bi in the initial solution was 0.35–0.43). The composition of the cubic fluorite-type phase is BaBiF 5 according to an energy-d…
The effect of the CrRu–SiOx underlayer with different doping concentrations and the thickness of the CrRu underlayer on the microstructure and magnetic properties of FePt–C films were investigated. FePt films exhibited L10 (001) texture at various SiOx doping concentrations. The coercivities were as large as 28 kOe an…
A high-quality a-plane GaN layer with a pit-free, mirror-like surface was grown on a hemispherical patterned r-plane sapphire substrate (PSS) by metal–organic chemical vapor deposition. The use of the r-plane PSS reduced the density of defects such as basal plane staking faults and threading dislocations of the a-plan…
PURPOSE: The present study was initiated to study the autophagic and apoptotic response to sonodynamic therapy (SDT) in murine leukemia L1210 cells in vitro. METHODS: L1210 cells were examined after 6 hours of incubation following SDT induction with ultrasound at a frequency of 1.1 MHz and an intensity of 3 W/cm(2) in…