Materials Literature
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Superconductivities and structural properties of Ti—Zr—Ta ternary alloys are extensively investigated. The TiZrTa sample has a cubic structure (β-phase) and shows a sharp superconducting transition at a critical temperature ( T c ) of about 7.3 K. In addition, two series of Ti—Zr—Ta alloys, with nominal compositions o…
Radiochemical reactions between tritium and carbon dioxide molecules at elevated temperatures have been investigated. There is no significant temperature dependence of the radiochemical reactions in the temperature range from 373 to 573 K. It has been found that concentration of such reaction products as tritiated met…
In the present paper, we have reviews on the fundamentals study of the radiation interactions with materials and point out to development of lead free radiation shielding glass based on bismuth and barium in different glass formers. Beside all mentioned usefulness of the new materials, the development of lead-free rad…
The synthesis and free-radical polymerization of the acrylates monomer containing photosensitive chalcone group and the acrylates monomer containing mesogenic group are described in this paper. The monomers and polymers were characterized by FT-IR and 1 H NMR spectra. The thermal properties of polymers were measured b…
This paper presents a modification of biodegradable polymers with highly-disperse metals, for example Fe/FeO or Fe2O3 (Z), with nano-sized particles. During the course of the work, biodegradable polyethylene composites with the composition PE-276 + Z + starch (Z = 0.1% by wt, starch from 2.5 to 10% by wt) were produce…
Molecular hydrogen is an environmentally clean source of energy, but it is not available on Earth. Steam reforming of bio-derived compounds represents a valuable route for the generation of molecular hydrogen and has the advantage that it is CO2-neutral and it requires a limited amount of additional infrastructure for…
Pristine ZnS and Gd (6 at. %) doped ZnS nanoparticles have been synthesized by facile chemical co-precipitation method in aqueous media at room temperature using PVP as a surface capping agent. The as-prepared samples were characterized by structural, morphological, chemical composition and photoluminescence studies.…
The crystal structures of 13 chalcogenides of Na, Au(I), and Ag(I) in the Na2 − n (Au,Ag) n (S,Se,Te) series, where 0 ≤ n ≤ 2, are interpreted from unified positions based on the sphenoidal representation. Its essence is in the consideration of the entire crystal space (with packing X atoms in the framework of close-p…
In this work, degummed (Bombyx mori) silk fabric was used as a bio-reinforcement for epoxy composite.The silk fabric was in a form of plain weaving with 177 ends/10 cm x 201 picks/10 cm. The degummed silk fabric (dSF)/epoxy composites were prepared by hand lay-up with dSF weight fraction of 0.18-0.35. The dSF was char…
Underwater explosions have been studied intensively in the United States since 1941 [e.g., R. H. Cole, Underwater Explosions (Princeton University Press, Princeton, NJ, 1945), pp. 3-13]. Research to date has primarily focused on the initial shock and subsequent pressure waves caused by the oscillations of the "gas-glo…
In this study, a novel phosphorus-nitrogen containing intumescent flame retardant (P-N IFR) poly(melamine 2-carboxyethyl(phenyl) phosphate)(PMCEP) was prepared via the reaction of 2-carboxyethyl (phenyl) phosphinic acid (CEPPA) and melamine (MEL) in two-steps. Meanwhile, the molecular structure of the chemical compoun…
A series of materials used for oil absorption based on cellulose fiber grafted with butyl acrylate (BuAc) have been prepared by radical polymerization under ultrasonic waves processing. Effects of ultrasonic dose for the maximum graft yield were considered. The dependency of optimum conditions for oil absorption rate…
It is well known the relevance given to the study of heat transfer in polymer foams,\nas one of the main applications is as lightweight thermal insulating elements. Alongside\nsome of the possible strategies for improving the thermal insulating characteristics of\npolymer foams, there is also a tremendous interest in…
Energy harvesting from heat has been investigated for many decades and has found place in many areas such as space industry, aviation, automotive and industrial applications. Thermoelectric energy harvesting has a valuable potential to be used in mobile systems as well. In this study, the design, fabrication and test…
The tetragonal LaOF:Eu3+ nanoparticles have been successfully synthesized by three different methods including hydrothermal, solvothermal and chemical precipitation methods. Strong red fluorescence emissions were observed by exciting the samples with 532 nm laser. Under the proper conditions, the sample synthesized vi…
The siliceous skeletal elements of the sponges, the spicules, represent one of the very few examples from where the molecule toolkit required for the formation of an extracellular mineral-based skeleton, has been elucidated. The distinguished feature of the inorganic matrix, the bio-silica, is its enzymatic synthesis…
Well-aligned and closely-packed silicon nanopillar (SNP) arrays are fabricated by using a simple method with magnetron sputtering of Si on a porous anodic alumina (PAA) template at room temperature. The SNPs are formed by selective growth on the top of the PAA pore walls. The growth mechanism analysis indicates that t…
Carbon nanotubes have various unique properties beneficial for use in various electronic devices such as quantum wires, optical switchers, nano-transistors etc. Theoretical and experimental attempts were made in past decade to predict material properties of CNTs. Atomistic models of EPON 862 polymers were built in ord…
Abstract— A transflective polymer‐stabilized blue‐phase liquid‐crystal display (BP‐LCD) with a corrugated electrode structure is proposed. To balance the optical phase retardation between the transmissive (T) and reflective (R) regions, two device structures are proposed. The first device structure has the same inclin…
Distribution of carbon dust in the plasma discharges was measured, and sublimation of dust was dominant in the scrape-off layer (SOL). Dust collection in the vacuum vessel was performed after the experiment campaign, and the analysis showed that both weight and number of dust were large at the exhaust route of the deu…