Materials Literature
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Abstract The miscibility of chitosan (CS) and poly(ethyleneglycol) (PEG) blends in buffer solution (CH 3 COOH and CH3COONa) has been investigated by viscosity, density and refractive index studies. Various interaction parameters such as polysolvent and blend-solvent interaction parameters and heat of mixing have been…
This paper reports a low-cost NaSrBO3: Eu3+ red phosphor. It was synthesized by sol-gel method. The effects of preparation conditions and doping concentrations on the optical properties were investigated. The structure, photoluminescence properties, thermal stability of Eu3+-doped NaSrBO3 were examined. NaSrBO3: Eu3+…
Peach-like ZnO microstructures are synthesized using vapor phase transport on MgO (001) substrates with a copper oxide (60 nm) buffer layer. The structure and morphology of the product are investigated using an x-ray diffractometer (XRD) and a field-emission scanning electron microscope. The peaches have an average di…
In this work, interaction at ambient temperature between silica fume and artificially produced Ca(OH) 2 nanoparticles by two different methods was analyzed. Initial products and formed hydrated phases were characterized by several investigations including X-ray diffraction, thermal analyses, transmission and scanning…
This paper reported on the structural properties of Lithium-Barium borophosphate glasses. The glasses were prepared through melt quenching technique and studied in the compositional series which was 25Li 2 O:25BaO:( x )B 2 O 3 :(50- x )P 2 O 5 where 0 x 50 mol% .The aims of this work were to investigate the vibration…
Homogeneous oxidation of hydrogen selenide with ozone present in deficiency was studied. One of the reaction products is elemental selenium Se 8 , which can be formed by multistep radical-chain polycondensation of hydrogen selenide. One mole of ozone is consumed per mole of hydrogen selenide. The observed rate constan…
We present a new physical model for electrical conduction and switching in the amorphous phase of phase change memory (PCM) devices. The model describes non-homogeneous conductivity by an energy landscape of Poole-Frenkel (PF) barriers. The model accounts for the thickness dependence of conduction in the amorphous sta…
Abstract The isothermal section of the phase diagram of the Dy‐Zr‐Si ternary system at 773 K was determined by X‐ray diffraction (XRD) analysis, metallographic analysis, and scanning electron microscopy (SEM) with energy‐dispersive spectrometer (EDS) analysis. The isothermal section consists of 13 single‐phase regions…
Removal of particulate residues represents a very challenging step in current CMOS-technology nodes. The continued miniaturization and the introduction of novel materials in the semiconductor industry have resulted in very stringent requirements for device fabrication steps such as cleaning processes [. Physical force…
In order to have a better understanding and using of the new type of regenerated flax fiber –Jutecell, Mechanical properties of three kinds of fabrics which knitted by Jutecell, cotton and bamboo fiber were tested, focusing on the stretching, bursting, abrasion-resistant and anti-pilling properties, through the compar…
This paper focused on the evaluation of burning performance of the traditional organic insulation materials, such as XPS, PU and phenolic foam. Cone calorimeter test indicated that PU showed a well flammability. After the combustion process, most of the XPS was melted, and most of the phenolic foam was burned. SBI tes…
We present results of Monte Carlo simulations of a model system of Co nanoparticles in an external magnetic eld. In our simulations we take into account the interaction with the external magnetic eld, the energy of crystallographic anisotropy and the dipoledipole interactions between single domain nanoparticles. We ap…
Heat treatment of rolling bearings components is an indispensable part of their production and also is the unavoidable item of the price in calculating of bearings. Technological process of heat treatment must be created rationally and in addition to the required hardness must also ensure the dimensional precision of…
In the work, there are noted experimental results aimed at determination of influence of initial microstructure of the steel S355, that was exposed to different temperatures of intercritical annealing, on its resistance against cyclic loading by number of cycles needed to fracture the samples, loaded by stress amplitu…
The increasing use of nanoparticles (NPs) in industries, soil and water remediation technologies, potential agricultural uses (e.g. fertilizers) and unintentional releases via air, water and sewage sludge application to the land likely leads to the release of such materials into the environment. The unique properties…
Pure and La-doped barium titanate hafnate (BaHf0.1Ti0.9O3, short for BHT) ceramics were prepared by conventional solid state reaction method. The microstructures, dielectric and ferroelectric properties of Ba1-xLaxHf0.1Ti0.9O3 (x = 0, 0.01, 0.02, 0.03, 0.04) ceramics have been investigated. From the x-ray diffraction…
Abstract In the UK, radioactive wastes currently planned for disposal in a geological disposal facility (GDF) are intermediate-level waste, some low-level waste and high-level waste. Disposal of other materials, including spent fuel, separated uranium and separated plutonium are also included in the planning of a GDF,…
Abstract In the paper, an exfoliated nano-composite was prepared by vinyl acetate (VAc), montmorillonite (MMT) and dioctadecyl dimethyl ammonium bromide (DOAB).Then it was mainly studied by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and static tensio…
The cumulative installed solar power generation has been rising exponentially over the past decade. This has lead to a concomitant rise in production capabilities, leading eventually to excess production capabilities and rapid price declines per unit. In order to compete with the standard electricity generation the co…
A high-quality Si nanodisk superlattice is fabricated by our top-down process. For the first time, a 3D finite element method (FEM) is developed to calculate energy band structure, optical and electrical properties, as well as the intermediate band solar cell (IBSC) operation for the realistic structure. Both the expe…