Materials Literature
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The hcp-Co and fcc-Ni nanowires with the diameter of ~ 50nm were successfully prepared at different overpotentials by using potentiostatic electrochemical deposition in the pores of AAO templates. The prepared nanowires were characterized by X-ray diffraction, and the morphology of the nanowires was investigated by sc…
In this work, we present first principles calculations based on a full potential linear augmented plane-wave method (FP-LAPW) to calculate structural and electronic properties of III-V based nitrides such as GaN, AlN, InN in a zinc-blende cubic structure. First principles calculation using the local density approximat…
The warpage deformation plays an important role on the performance of automobile interior components fabricated with natural fiber reinforced composites. The present work investigated the influence of process parameters on the warpage behavior of A pillar trim made of ramie fiber (RF) reinforced polypropylene (PP) com…
Tamoxifen (MW=371 g/mol) is an endocrine therapeutic drug widely prescribed as chemopreventive in women to prevent and to treat all stages of breast cancer. It is also being studied for other types of cancer. In this study, we have calculated some gamma shielding parameters such as mass attenuation coefficient (μρ), e…
Recent advances in the fabrication of colloidal particles enable the generation of colloids that may be anisotropic in surface chemistry and in shape. However, the main challenge is to organize these anisotropic colloids into novel and well-defined structures for advanced functional materials. This work is concerned w…
Protective coatings based on composites of a refractory metal matrix reinforced with nanodispersed particles of carbides, nitrides, borides, and oxides are developed and studied in this work.
A theoretical study of the growth of a spherical vapor bubble in a spherically symmetric superheated region is described. The modeling of bubble dynamics is based on considering the hydrodynamic and thermal processes inside a bubble and the surrounding liquid.
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It is shown that the estimate of strength of foundations, structural elements of buildings and structures on the basis of experimental and theoretical studies allows to achieve rational use of materials, improvement of methods of calculation. The results of the analysis of the numerical experiment of gratings with cha…
The photolithography was used on molecular orientation of liquid crystals as an alternative to other conventional methods. Either planar or homeotropic orientation were provided with surface anchoring energy for the molecular alignment. The photolithography were applied to provide micro-grooving on the film surface, w…
Global warming awareness criticizes further usage of fossil fuels and insists promotion of renewable energy usage. Additionally, many people in rural areas of developing countries cannot access electricity. To solve this sort of energy crisis including global warming, current authors developed a proto-type of a pyroly…
The phase composition and grain structure of Pb–13 wt % Sb produced by the method of rapid solidification are studied. In the foils of alloys, formation of dispersed rounded antimony segregations takes place, distributed macroscopically homogeneously in the alloy foil; the foils have microcrystalline structure and tex…
The splitting levels and corresponding wave functions of rare earth compounds Ce 2 NiGe 6 and Ce 2 NiGe 3 have been presented by taking into account the crystalline electric field. The influences of Ge content on rare earth ion ground state splitting also have been analysed. The first excited energy and overall splitt…
The work contained within this thesis explores the synthetic strategies to several novel conjugated systems derived from porphyrin, NDI and TTF building blocks and their subsequent characterasation. These novel compounds have applicability in studying the factors that govern ET and EnT in interesting redox processes a…
The longitudinal dielectric, piezoelectric, and elastic characteristics of ferroelectric RbH 2 PO 4 and antiferroelectric NH 4 H 2 PO 4 crystals are calculated in terms of the modified model of proton ordering with allowance for the piezoelectric coupling in an approximation of a four-particle cluster. The results obt…
The present study focuses on the effect of the number of the injection locations in the plastic injection molding. With the agile of the product demand in the consumer market, product-manufacturing industries are opting the plastic and metal injection molding machines, as they are suitable for the batch and mass produ…
CuIn 0.5 Ga 0.5 Se 2 films were pulse electrodeposited on molybdenum substrates at room temperature and at 50 % duty cycle. The total deposition time was 10 min. The films exhibited single phase chalcopyrite structure. Magnitude of the room temperature resistivity, mobility and carrier concentration were 4.85 ohm cm,…
The optical properties of an electrostatic quadrupole doublet lens with two different electrode shapes were studied with the aid of computer simulation. The optimal electrode voltages of the electrostatic quadrupole lenses which give the stigmatic image in both planes simultaneously were found for both concave cylindr…
Using emission Mössbauer spectroscopy on 119mmSn(119mSn) and 119Sb(119mSn) isotopes, the electron exchange process between neutral and doubly ionized U – tin centers is studied in partially compensated PbS z Se1–z solid solutions. The activation energy of this process for compositions with z ≈ 1 is comparable to the d…
Glass composites covered by sol–gel TiO2–m Me x O y (Me x O y = ZnO, CdO, SnO, CuO, and Fe2O3 and m = 2, or 10 wt %) binary oxide coatings have been studied. The microhardness of the composites and glass substrate has been measured, and the microhardness of the coatings has been determined from these measurements. A c…