Materials Literature
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We examined the possibility of high-density recording using shift-multiplexed holographic memory with a spherical reference beam. The use of a spherical reference beam is considered to make it possible to realize a multi-dimensional multiplex system that uses the disk track direction (x-axis), radial direction (y-axis…
Two kinds of nanostructured Co-Cu alloy films: a nanolamellar Co-Cu alloy film and an ultrafine-grained two-phase Co-Cu alloy film were processed by electrodeposition, and their microstructures and mechanical properties were investigated. These nanostructured Co-Cu alloy films showed the high hardness and the low acti…
Abstract The article presents an approach to evaluate and reduce the effort of the derivative pipeline in a water turbine of a hydroelectric power station in its vulnerable spots. Potential places of the biggest effort of the structure, as well as the coefficient of displacement and safety factor related to them were…
The effect of acid and alkali leaching on catalytic activity of an atomized Ni3Al powder for methanol decomposition was investigated. It was found that a two-step process, an acid leaching followed by an alkali leaching, was most effective for improving the activity. The optimal conditions of acid and alkali leaching…
In this investigation, it was successfully shown that variation of heating media for infused substrates in precursor solution, affects the growth density and size of nanostructured ZnO rods. ZnO rods were prepared by precipitation on a template of cleaned p-type silicon wafer, sputter-coated with a thin layer of gold,…
Low-dimension materials such as nanobelts, nanowires and nanorods are being investigated for their superior properties and numerous applications. Among them, one-dimensional semiconductor ZnO, representing one of the most important low dimensional materials, finds its applications in many different fields such as sens…
Physarum plasmodium lives as a slimy mass of protoplast in the dark fragments into small multinucleated microplasmodia (mPL) in a liquid medium. When mPL are exposed to several unfavorable environments, they transform into "spherules" with a cell wall. Using a synchronous spherule-induction system for mPL, we examined…
The possibility of hardening wurtzitic boron nitride through plastic shears along the (0001) basal plane in the indentation normal to this plane has been considered based on the analysis of the crystal geometry of wurtzitic lattice. It has been concluded that the hardening may be caused by the formation of basic stack…
Films of meso -substituted derivatives of tetraphenylporphine substituted in the para or ortho -positions of the phenyl rings with alkoxy groups (-OC 4 H 9 or -OC 16 H 33 ) and films of their metal complexes are prepared using the Langmuir-Schaefer (LS) method. The effect of the molecular structure on the supramolecul…
In the course of carrying out the present work, it was stated that a parasitic surface nano-structurization is peculiar to reflective relief-phase holograms obtained on thin layers of a chalcogenide glassy semiconductor (CGS). The results of experimental researches of the effect of a relief height for reflective relie…
Diamond-like carbon (DLC) films were deposited on magnetic recording head by Filtered Cathodic Arc (FCA) technique and a-Si base material was ion beam deposited as seed layer. To investigate the thermal stability of stack film, repeated cycle thermal heating at 200 °C was employed. Raman spectroscopy and nanoindenter…
Carbon nanotubes (CNTs) were produced on silicon (Si) substrate prepared by Thermal-CVD method using C55H96O6 (Palm Oil) as a starting material. Catalyst has been prepared by dissolving Nickel (II) nitrate, Ni (NO3)2.6H2O and ethyl alcohol, C2H5OH. Before the deposition process, silicon was coated with Nickel using sp…
It is well known that SiC doping in superconducting MgB2 improves the upper critical magnetic field (Bc2) and the critical current density (Jc) under high magnetic field. However, the relationship between SiC doping and the flux pinning mechanism has not been clarified. In this study, several MgB2 samples with and wit…
The studies on the thermoelectric (TE) properties of 3,4,9,10-Perylenetetracarboxylic dianhydride (PTCDA) and a conducting polymer Poly(ethylenedioxythiopene): poly(styrenesulfonate) (PEDOT:PSS)–PH1000 are presented. PTCDA and PEDOT:PSS have been used as a potential n-type material and a p-type material for the TE dev…
A bulk vacuum ultraviolet double frequency crystal KBe2BO3F2(KBBF) crystal has been grown successfully by using a method of oriented reduced-pressure melts growth, and the optical properties of the grown crystal, such as optical transparency and the second harmonic efficiency, were also measured. The results show that…
Abstract C 18 H 12 Ag 3 F 9 N 2 O 6 , triclinic, P 1 ̄ (no. 2), a = 10.2866(9) Å, b = 11.951(1) Å, c = 12.030(1) Å, α = 112.702(2)°, β = 93.315(2)°, γ = 111.397(2)°, V = 1235.9 Å 3 , Z = 2, R gt (F) = 0.0956, wR ref (F 2 ) = 0.3122, T = 296 K.
Computational simulations of indentations in elastic-plastic materials showed overestimate in determining elastic modulus using the Oliver & Pharr’s method. Deviations significantly increase with decreasing material hardening. Based on extensive finite element computations the correlation between elastic-plastic mater…
This paper is mainly a study the diffusion bonding of Mg-AZ31/Al-6061 by using the direct bonding method. After bonding process, multilayer field with Mg-Zn and Al-Zn have been confirmed by EPMA determination. Through the microstructure observed by SEM, bonding boundaries of Mg-AZ31/Al-6061 had good diffusion formatio…
Two novel antenna complexes of $Eu^{III}$ with 1-naphthoic acid (NA) as primary ligand and two aromatic N-donor ligands namely N-hexyl-N-(pyridin-2-yl) pyridin-2-amine (1) and 4-((dipyridin-2-ylamino)methyl)benzoic acid (2) have been synthesized and characterized by various spectroscopic techniques. The room-temperatu…
The authors discuss the probe-tested method of estimating quantity of accumulated energy in mechanical activation of wolframite, loparite and scheelite concentrates using X-ray crystal analysis data. The article proposes relations to calculate changes in energy quantity accumulated in phases of rare metal concentrates…