Materials Literature
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By considering the worldwide use of composite materials in stabilization works, according to sustainable and ecological principles, the present paper is focused on the analysis of changes of several geotechnical properties depending on components of bi-mineral mixtures and interaction existing among various mineral ty…
Using Density Functional Theory (DFT) calculation, we have studied structural, electronic and magnetic properties of Quaternary Heusler alloys (QHA) CoX’FeSi where X’ is a transition metal with 4d electrons. On the basis of structural properties, electronic structure (DOS) and magnetic moments we investigate these mat…
碳纳米管由于具有很大的长径比和比表面积，是理想的增强材料。本文主要综述了近年来碳纳米管增强聚合物复合材料的研究进展，所增强的聚合物主要包括聚氯乙烯、聚乙烯醇、聚砜和聚甲基丙烯酸甲酯。对复合材料的制备方法、应用及所得材料的力学性能、热稳定性、导电性等各方面性能进行了总结。 Carbon nanotubes are ideal reinforcing materials due to their large aspect ratio and specific sur-face area. The research advances on carbon nanotubes/polymer nanocomposites in recent…
Доказано существование перенормированного решения в соболевских пространствах для некоторого класса нелинейных эллиптических уравнений с членами низшего порядка и $L^1$-данными. Библиография: 29 наименований.
In high-temperature polymer electrolyte membrane fuel cells (HT-PEMFC) one of the detrimental factors that lead to loss of performance is the corrosion of the electrocatalyst support. In both anode and cathode, platinum (Pt) supported on carbon is generally the selected electrocatalyst. Platinum significantly increase…
The irradiation of sub-stoichiometric amorphous hydrogenated Silicon nitride (a-SiNx:H) films with 100 MeV Ni7+ ions leads to a loss of hydrogen from these films and results in a compacted and denser films. It has been found that in addition to hydrogen, the nitrogen in the films tends to out-diffuse. However nitrogen…
Diamond-like-Carbon (DLC), is a cheaper alternative to diamond and have applications in wear resistance and lubrication of mechanical parts. Here, commercially viable thin film anti-friction DLC nanocoatings are produced by Radio-Frequency (RF) magnetron sputtering. The tribological properties are measured and correla…
As a result of mass construction of residential multi-storey buildings with non-bearing multi-layer walls and brick masonry cladding, during recent 10 years a number of drawbacks were found in design solutions leading to structural failure already at the initial stage of operation. Relevance of this problem is caused…
Temperature dependent Raman Spectroscopy study has been performed from 300K to 873K in order to probe the spin-lattice correlation in Rare Earth orthoferrite LaFeO3. The signature of correlation in spin and lattice degrees of freedom is reflected in peak position and/or width around the magnetic ordering temperature i…
Zinc gallium oxynitride, (Ga1-xZnx)(N1-xOx), was synthesized by the reaction of zinc gallium oxynitride, ZnGa2O4, with a solid nitrogen source of Li3N at 823 K. A thermolysis of the mixture of gallium salen and zinc acetate produced ZnGa2O4 particles with a 2D morphology. The optimization of zinc and gallium ratio was…
The paper presents the results of predictive calculation of boron silicide thermodynamic properties (enthalpy, entropy, heat capacity) required for the thermodynamic analysis of the Si–B–Cl–H system conducted by means of the TERRA software. The paper considers cases of SiB4 and SiB6 condensed phase formation in the re…
DFT - A (ECH
A new method is discussed in this study to compute the crystallite shape in a material by considering X-ray diffraction data of a polymer composite system. Using this, one can estimate the ordered crystalline region in a material; understand its internal morphology to relate its dependence and influence on the other p…
Bu çalışmada, atık ofis kâğıtlarıüzerine öncelikle siyah lazer baskı yapılmış ve daha sonra bu kâğıtlardanmürekkep giderme işlemleri gerçekleştirilmiştir. İkinci basamak olarak, baskılıkâğıtlar farklı şartlar altında Hobart hamurlaştırıcısı ile hamurlaştırılmış vesüspansiyonlar hazırlanmıştır. Hamurlaştırma ve süspans…
The development of electric and hybrid automobiles has gained momentum with the growth of interest in the field of miniaturization of electrode materials. In particular, technologies that improve the electrical property of stainless steel, while maintaining corrosion resistance, are gaining interest in terms of mainta…
The optimization of parameters for laser deposition of nanoparticles on Si-wafer is studied. The threshold of laser energy, pulses per laser shot and overlapping is crucial in order to achieve the best deposition results.
The paper presents possibilities of the application of open-cell metal foams in the construction of process equipment. The article also describes results of own experimental studies on hydrodynamic and thermal phenomena occurring during fluid flow through channels packed with aluminium alloy foams. The collected exper…
In this study, FT-Raman and FTIR spectroscopy have been applied to the vibrational characterization of diclofenac (DCF).The vibrational analysis was aided by DFT calculation based on B3LYP/6–31G(d, p) basis set. The optimized geometries, IR and Raman intensities and harmonic vibrational frequencies were computed. The…
We report an electrically tunable photodetector design based on photogating effect in graphene heterostructures. We demonstrate electrically tunable photoresponse up to 60 A/W with a sub-millisecond speed. The detector's spectra tunability will also be investigated.
We present a new super-resolution imaging approach by using hyperbolic metamaterial to compressively encode high-resolution spatial information to a spectrum. We show numerical results of resolving sub-15nm resolution by a practically achievable Ag/SiO2 multilayer metamaterial.