Materials Literature
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The objective of the paper has been given on observations based on studies of the three samples of copper-iron (Cu-Fe) alloy have been prepared from 3gm mass of copper of 99.9 % purity powder and adding 1gm weight of iron powder and adding 1.5gm weight of iron powder. A discussion about simple and low cost preparation…
Fe3O4 nanoparticles were grown in situ on carbon nanotubes (CNTs) by a solvothermal method. The Fe3O4/CNTs composites were characterised by the Brunauer-Emmett-Teller method and transmission electron microscopy. The results indicated that the Fe3O4 nanoparticles were uniformly deposited on CNTs, and the average diamet…
This paper shows the results of the development of a test procedure to quantify dynamic properties of hydrophobicity, focusing on the retention and the recovery of hydrophobicity. The Dynamic Drop Test (DDT) has proven to be a suitable test method and the investigations are intended to improve the test with respect to…
Surface discharge on solid insulator in vacuum is one of the significant issues for the development of vacuum circuit breakers (VCBs) and vacuum interrupters (VIs). For the development of higher voltage VCBs and VIs, control and suppression techniques of the surface flashover are required. The aim of present study is…
Carbon nanotubes offer the potential for improved or changed matrix properties, thereby enabling the creation of novel, multifunctional composite materials. By using highly aligned, multiwall, carbon nanotubes (MWCNT) with thermoset resins, good dispersion and distribution of nanotubes is obtained. To date, research h…
Abstract First, a large sample of Ni0.05Mo3Sb5.4Te1.6 was prepared by heating the elements in the stoichiometric ratio. β‐SiC nanoparticles were added in volume fractions, f, of 0.01, 0.02, and 0.034 to three different portions of the material, and a portion without SiC nanoparticles was retained as a reference. All f…
In this work, CdSe QDs were synthesized using a microwave assisted method and chemical reaction between NaHSe, CdSO4 at the presence of TGA as capping molecule. Thereafter without CdSe extraction, CdS shell was grown subsequently around CdSe cores by a reaction based on the heat sensitivity of Na2S2O3 dissociation. Sy…
In this article the influence of different amounts of In (0, 0.5, 1 and 3 wt. %) on the thermal and electrical properties of Ge 2 Sb 2 Te 5 thin films for nonvolatile phase change memory devices is investigated. Crystallization temperature, resistivity, width of the optical band gap, Urbach energy, activation energy a…
Nanoparticles of porous silicon were obtained by electrochemical anodic etching. Morphology and internal structure of porous silicon powders were investigated by scanning electron microscopy. The influence of technological conditions of post-processing on morphology and internal structure is discussed.
A dispersion relation has been obtained for the hybrid electromagnetic spin wave in a magnonic crystal–ferroelectric–magnonic crystal layered structure. The mechanisms of the bandgap formation in this structure have been revealed, and the ability to double tune bandgap characteristics by means of the electric and magn…
The AC (50 Hz) partial discharge (PD) characteristics of oil-impregnated pressboard (OIP) insulation are severely influenced by the DC voltage component in the converter transformer. Therefore, this study investigates the effect of different DC prestressing voltage (DCPV) amplitudes, prestressing time, and repetitions…
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A mixed metal dielectric grating is designed and analyzed to suppress the zeroth order in the reflection region instead of the transmission structure. There are no ±2nd orders for the grating period in this paper, which leads to high efficiencies in the ±1st orders. Efficiencies of 48.36% for TE polarization and 48.34…
Summary In this work, Monte Carlo methods were used to simulate olefin polymerization with coordination catalysts: the Direct method (DM), the First Reaction method (FRM), the Next Reaction method (NRM), and the τ‐Leaping method. The first three methods are exact stochastic simulation algorithms (SSA), while the τ‐Lea…
The most significant methods for estimating the uniaxial compressive strength and Young's modulus of intact rock material, formulated in the scope of numerous previous studies, are briefly presented in the paper. The proposal for classification of these methods, according to which they can generally be divided into si…
The objective of this study is to broaden the application of xylan as moisture‐absorption/retention biomaterials by grafting polyethylene glycol (PEG) on xylan backbone. Ionic liquid 1‐allyl‐3‐methylimidazolium chloride ([Amim]Cl) and 4,4‐diphenylmethane diisocyanate are used as reaction media and coupling reagent, re…
Cellulose-graft-poly(p-dioxanone) copolymers (cellulose-g-PPDO) were homogeneously prepared via ring-opening graft polymerization (ROP) between p-dioxanone (PDO) and hydroxyl groups of cellulose using the catalyst 4-dimethylaminoptridine (DMAP) in the ionic liquid 1-butyl-3-methylimidazolium chloride (BmimCl). Chemica…
The lower cyclic endurance of Phase Change Memory (PCM) devices limits the spread of its applications for reliable memory. The findings reported here show that micro-voids and excess vacancies that are produced during the deposition process and the subsequent growth in sputtered carbon-doped GeSbTe films is one of the…
Nanotechnology is an important field of modern pharmaceutical research involves synthesis and development of various nanoparticles (NPs) with unique features and extensive pharmaceutical and medical applications in drug delivery, diagnostics, imaging, sensing, gene delivery, artificial implants and tissue engineering…
Electrospun chitosan nanofibrous substrates are functionalized with silver nanoparticles by reduction of silver from Tollens reagent using glucose. Filling factor is estimated through developed protocol by using analysis of scanning electron microscopy images. Obtained nanocomposite silver-chitosan plasmonic films dis…