Materials Literature
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The strong permeability and driving force of supercritical carbon dioxide renders it an ideal medium for fabrics finishing. This paper is to use supercritical carbon dioxide medium with a solution of organic fluorine to fabricate water/oil repellent polyester fabrics. A series of characterization methods including Fou…
Mechanical properties such as tensile strength, elastic modulus and elongation at break of graphite/ biopolymer composites with different particulate fractions of graphite (5 wt.%, 10 wt.%, 15 wt.%, 20 wt.%, 25 wt.%, 30 wt.% by weight percent in the composites ) were investigated. The composites showed improved elasti…
Biopolymer-based materials have been of particular interest as alternatives do synthetic polymers due to their low toxicity, biodegradability and biocompatibility. Among them, chitosan is one of the most studied ones and has recently been investigated for the application as solid state polymer electrolytes. Furthermor…
Having analyzed the results obtained in the work, it is possible to conclude that the flux density of fast and thermal neutrons in the shell of fuel elements in EFA in REU-zone decreased on average by 5% for UO2 fuel and by 7% for U9%Mo fuel. Change of neutrons flux density during the cycle does not exceed 4% for both…
This work was performed to investigate the production and physicochemical properties of some bioactive compounds (chitin, chitosan and astaxanthin) extracted from squilla (<i>Oratosquilla massavensis</i>) shells. Chemical composition of squilla shells and chitin yield were determined. Results showed that pre-treated s…
The metalloporphyrins and metalloporphyrin intermediates with lower energy gap have stronger ability to activate the oxygen and cyclohexane respectively.
Recent advances in magnetoelectric sensor systems prove their growing importance for biomagnetic sensing applications. But with increasing sensitivity down to some pT in mechanical resonance the sensors require techniques to convert low frequent biomagnetic signals in the range of 0.1 Hz to 40 Hz into the mechanical r…
To develop a flexible liquid crystal display (LCD) with a wide viewing angle range and high contrast ratio, we have proposed a flexible blue-phase LC device sustained by polymer walls inside the LC cell. We clarified that the polymer walls can maintain a constant cell gap and suppress the generation of alignment defec…
Bionano-materials are playing an important role in a number of applications due to their inherent eco-friendly advantages since the last few decades. These materials are being explored as the potential alternatives to traditional synthetic materials for diverse applications with particular emphasis as green reinforcem…
New theoretical expressions for the modeling of adsorption isotherms of Xenon on Graphite at 110 K have been established. The establishment of these new expressions is based on statistical physics formalism and some working assumptions. This method allowed estimation of physico-chemical parameters in the theoretical m…
Zinc strontium phosphate glasses doped with different trivalent praseodymium ion (Pr 3 ) concentrations are presented and their photoluminescence properties are investigated upon 442 nm excitation. With the Pr 3 concentration decreasing, the orange emission of Pr 3 ( 1 D 2 -3 H J ) is enhanced steadily at the cost of…
We got the aligned carbon tube in the rubber matrix through magnetic field. TEM shows that Fe 3 O 4 is symmetrically coated on the outer surface of MWCNTs. Diffraction peaks corresponding to Fe 3 O 4 cubic crystal also appeared in the X-ray diffraction spectra. Thermal conductivity of composites increases by filling t…
We report our experimental observation of a large electrical tuning of ferromagnetic resonance frequency in FeCo/MnIr/[Pb(Mg1/3Nb2/3)O3]0.68-[PbTiO3]0.32(0 1 1) multiferroic heterostructures. Specifically, by varying an applied electrical field across the thickness of the substrate, the ferromagnetic resonance frequen…
Fibers formed by the co-assembly of sodium laurate and silica nanoparticles.
When boron carbide is used as a neutron absorber in nuclear power plants, large quantities of helium are produced. To simulate the gas behaviour, helium implantations were carried out in boron carbide. The samples were then annealed up to 1500 °C in order to observe the influence of temperature and duration of anneali…
In this work, the behavior of a coated material in oxidizing medium is studied under the conditions of heat flux action. It is assumed that the coated material is heated quickly due to high thermal conductivity of metals. This allows neglecting the temperature distribution along the thickness of the coated material. H…
Previous experimental research has shown that microstructural features such as interfaces, inclusions, vacancies and heterogeneities can all act as void nucleation sites. However, it is not well understood how important these interfaces are to the damage evolution as a function of the surrounding parent materials. In…
Double perovskite oxide Sr 2 CoFeO 6 (SCFO) has been obtained using a high-pressure and high-temperature (HPHT) synthesis method. Valence states of Fe and Co and their distributions in SCFO were examined with X-ray photoelectron spectroscopy. The electric transport behavior of SCFO showed a semiconductor behavior that…
Severe plastic deformation (SPD) is capable of producing metals with ultrafine grained microstructure. Equal channel angular pressing (ECAP) is a type of SPD process and is the focus of this study. The process was simulated using finite element analysis at different channel angles of 90° and 120°. The input for materi…
In the context of the ongoing research addressing problems of random clinical failures of braided esophageal NiTi stents, we introduce novel in-situ electrochemical methods for investigation of corrosion fatigue of superelastic NiTi wires or springs subjected to cyclic mechanical loadings in simulated body fluids. Cor…