Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The safety instrumentation and control (I&C) system of the 10MW High Temperature Gas-cooled Reactor (HTR-10) is the key system referred to the safety of the reactor. It is designed based on the advanced digital control techniques. This article introduced its architecture, configuration, design feature and engineering…
Superplastic forming using resistance heating (SPFRH) is developed to solve the problems of high energy consumption and low efficiency. In this process, the sheet is connected in series with a high current circuit and heated directly by the electrical resistance. The heating rate of the sheet is controlled by current…
In this work we combine ion track techniques to construct self-aligned vertical structures with nanometer dimensions. The main idea is to use multilayer targets and apply various etching techniques to create openings along the ion path. By irradiating such a multilayered sample including a tetrahedral amorphous carbon…
Several nonlinear-optical coupling schemes in double domain positive/negative index metamaterials are proposed, which include ordinary and backward electromagnetic waves. One of them is investigated in the context of the applications to compensating strong losses inherent to plasmonic metamaterials and to design of no…
In this paper, polypropylene foam was prepared by chemical extruded foaming, the effect of formulation and process conditions on properties of polypropylene foam was investigated. The results show that the main factor affecting polypropylene foam is the die temperature, when the screw temperature is 182°C, the die tem…
Effects of micro alloying element Sr on the microstructure and mechanical performance of Mg-Al alloy were studied in this paper. X-ray diffraction (XRD), optical microscopy (OM) and scanning electron microscopy (SEM) were employed to analyze and observe the microstructure of the alloy. It was found that accompanying w…
The deep quasiperiodic variations in the part of frequency dependence of amplitude of reflections from layer Es observed by Kazan ionosonde was discovered. The analysis of height location of traces in an ionogram has shown that beatings arise because of interference between o- and x-modes. For an explanation of such i…
We investigate a nano-aperture based plasmonic metamaterial by integrating the U- and T-shaped nano-aperture antennas in a compact geometry. We experimentally and numerically demonstrate the physical origin of the multi-resonant behavior of the UT-shaped nano-aperture based metamaterials. We also determine the paramet…
The results of an investigation into the interrelation between the fatigue behavior (number N of cycles to failure) and the level of surface residual stresses (σ) of the cyclic deformation of the samples of high-tensile aluminum alloy with the nanosized reinforcing phase, which is used for the production of drill pipe…
Abstract not Available.
This paper deals with the modelling, practical implementation and characterization of an ultra-directive antenna around 10 GHz. The design of the antenna is based on transformation optics concept by transforming a radiating cylindrical space into a rectangular one. Metamaterials presenting electric and magnetic resona…
The paper generalizes the results available from the literature on the constraint on the high-frequency permeability of magnetic composites, with the stress made on the opportunities for obtaining of materials with high microwave permeability. The rigorous derivation is presented of the integral constraint on the perm…
We present herein a new unified microwave radiative transfer (UMRT) model for accurate, fast and stable calculation of thermal radiation from any geophysical medium comprised of planar multilayer spherical scatterers of arbitrary electrical size. UMRT combines several a unique features from classical discrete ordinate…
The fundamental understanding of material response to a neutron and/or high heat flux environment can yield development of improved materials and operations with existing materials. A concept has been advanced to develop a facility for testing various materials under extreme heat and neutron exposure conditions at Pri…
Aerogel is popular and commonly used as a composite, an absorbent, a sensor, etc. In this work, supercritical ethanol drying was performed for the preparations of Al2O3, ZrO2and MgO aerogels from the sol-gel synthesis. The effects of media, temperatures and pressures in high temperature supercritical drying mode on th…
A transparent hard coating of Organosilicon (SiOx) material can protect plastics and metals. This investigation on SiOxwas to optimize a protective film for plastic lenses and covers of mobile phones to upscale the process to an industrial size. Hexamethyldisiloxane and oxygen has been used as precursor gas. The coati…
Abstract not Available.
Carbon nanotubes, carbon spheres and slices of vertically aligned multiwalled carbon nanotubes (MWNTs) were synthesized simultaneously by chemical vapour deposition (CVD). Electron microscopy image showed carbon nanotubes were multiwalled carbon nanotubes, several micrometers in length. Carbon spheres were of uniform…
Plasmonic lenses based on subwavelength metallic nanostructures show a superfocusing capability. We report here a new property, the robustness of focusing performance to various imperfections introduced during the fabrication and testing of a practical plasmonic lens. The conclusions achieved may also be applied for o…
The flexural strength of MoSi₂ based composite reinforced with Nb sheets has been investigated, based on the detailed examination of their microstructure and fractured surface. Both sintered density and porosity of Nb/MoSi₂ composites were also examined. Nb/MoSi₂ composites were fabricated by different conditions such…