Materials Literature
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Abstract The results of an investigation of the chemical composition, structure, topography, and mechanical properties of surface layers of armco-iron after implantation of nitrogen ions under various conditions are given. Using X-ray electron spectroscopy, the implanted nitrogen distribution profiles are determined a…
Marker-based alignment widely used for tilt series alignment in electron tomography (ET) is crucial to high-resolution tomographic reconstruction. However, accurate alignment with markers remains a challenge because it is difficult to detect markers accurately and obtain the precise positions of fiducial markers in th…
Abstract The paper deals with the mechanical properties of steel gas pipeline DN 500 after more than 40 years of operation. Mechanical properties of the pipeline were established by a tensile test at an ambient temperature according to the standard EN ISO 6892-1. The resistance of the pipeline against brittle failure…
This paper proposes the novel concept titled as pseudo harmonic transmission ratio (PHTR) in permanent magnet vernier motor (PMVM) for in-wheel traction. The PHTR is equivalent to the mechanical gear in conventional transmission. Hence, the torque expressions of PMVM and PMSM plus mechanical gear are both derived and…
Abstract The Sr0.8Ce0.2Mn1 – yCoyO3 – δ (y = 0.2, 0.3, 0.4, 0.5, and 0.6) complex oxides with the perovskite structure obtained from simple oxides by the solid–state reaction technique have been examined using structural analysis and magnetic measurements. Substitution of Co for Mn in the dilute Sr0.8Ce0.2MnO3 antifer…
For the aerospace structural application of high-strength 2xxx series aluminum alloys, stress corrosion cracking(SCC) behavior in aggressive environments needs to be well understood. In this study, the SCC sensitivities of 2024-T62, 2124-T851 and 2050-T84 alloys in a 3.5% NaCl solution are measured using a constant lo…
Peripheral nerves stimulation has been widely used in clinical practices, such as the vagus nerve stimulation (VNS) for heart failure, and motor nerve stimulation for controlling the prosthetics. However, the nerve injuries induced by the large mechanical and geometrical mismatch and complex surgical implantation proc…
Abstract We have studied the ultrafast response of a Bi2Se3 crystal to femtosecond laser pulses. We have observed an increase in the rise time of the electronic signal and the simultaneous increase in the amplitude of coherent phonons that occur when the central wavelength of the pump laser pulse is tuned from 1500 to…
Abstract The data on computer simulation of the phase composition of Fe–Cr–Ni–Ti using the example of ZI 130 steel were presented. The purpose of simulation was the precise determination of percentage of titanium, at which alloys has a maximum corrosion resistance. Simulation data can be a basis for correction of chem…
The polarization control is very important for high power millimeter wave heating experiment on CFETR. Two polarizers with different groove depths were designed in this paper. The calculated results reveal nearly arbitrary polarization wave can be obtained by employing the collaboration of two polarizers, it would ens…
Titanium silicide (TiSi) contacts are commonly used metal-silicon contacts [1]-[3] but are known to diffuse into the active region under high current stress. Recently we demonstrated [4], [5] that graphenic carbon (GC) deposited by CVD has the same low Schottky barrier on silicon as TiSi, but a much improved reliabili…
Abstract The article documents the development of a modular transparent elemental facade. The cooperative development was realized in two areas, i.e., the development of facade ventilation units for an under-pressure ventilation system and experimental verification in a laboratory of a facade panel and optimization of…
This paper proposed a novel design of a metamaterial absorber with wideband absorption, wide incident angle and polarization insensitivity. Based on resistive film structure (lossy frequency selective surface), this metamaterial absorber unit consists of a nut ring shaped resistance film, a polymethacrylimide foam and…
Abstract The present paper is devoted to the study of a limiting stage of silicon carbide diffusion growth at the pyrocarbon–silicon melt interface. The main diffusion parameters of the process have been determined using a generalized kinetic equation and experimental data. The main kinetic law has been written for th…
A novel quasi-Yagi antenna is presented based on spoof surface plasmon polaritons (SSPPs). In the new design, the antenna consists of a transition from a coplanar waveguide to an SSPPs waveguide, an SSPPs balun, an SSPPs driving dipole, and two SSPPs directors. The lengths of the driving dipole and director are approx…
Abstract T-700 (Toray) and UMT 45-12K-EP (Umatex) carbon fibers and resin-impregnated reinforcing fabrics (prepregs) based on them are investigated by thermogravimetric analysis and differential scanning calorimetry. By thermogravimetric analysis of carbon fibers from different manufacturers and prepregs prepared with…
The paper deals with the issues of compaction and the formation of the structure of the MgB 2 compound obtained under the conditions of all-around compression in a Toroid chamber (quasi-hydrostatic pressing), due to which the product has almost the same density throughout the volume. It is shown that the densest finel…
Abstract Various methods of binding rare-earth metal ions with nanoparticles make it possible to obtain materials with new properties. The “green” synthesis method has been used for obtaining silver nanoparticles functionalized with Dy3+ ions. The absorption and photoluminescence spectra of colloidal solutions have be…
We consider the problem of prediction of the interfaces of protein-protein interactions, a challenging problem with important applications in drug discovery and design. The standard machine learning approach is to attempt to predict the interface in its entirety. Because of the difficulty of the problem, we propose to…
Las células troncales mesenquimales (CMMs), juegan un papel muy importante en el campo de la medicina regenerativa e ingeniería tisular, puesto que estas células indiferenciadas tienen la increíble capacidad de autorenovarse y de diferenciarse en varios linajes celulares adultos con funciones especializadas. Así mismo…