Materials Literature
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Objective(s): This paper reports on the toxicity of CuO NPs on hepatic enzymes and liver and lung histology. Materials and Methods: To assess the toxicity of copper nanoparticles (10-15 nm) in vivo, pathological examinations and blood biochemical indexes including serum glutamate oxaloacetate transaminase (SGOT) and s…
The performance of high-power gallium nitride (GaN) high-electron-mobility transistors (HEMTs) is limited by self-heating effects. High thermal resistances within micrometers of the active device junction often dominate the junction temperature rise and fundamentally limit the device power handling capability. The use…
In this study, the impurity concentration and magnetic response of nine highly oriented pyrolytic graphite (HOPG) samples with different grades and from different providers were determined using ion beam microscopy and SQUID magnetometry. Apart from sideface contaminations in the as-received state, bulk contamination…
The energized icing of composite insulators has been studied by the researchers around the world, but not much about the effects of electric field distribution on their icing and flashover performance. For this purpose, the ice accretion and flashover performance of 220 kV composite insulators with two shed configurat…
Nonlinear conductance along the crystallographic axis c across the layered whiskers of the TiS 3 quasi-one-dimensional semiconductor has been discovered. It has been shown that the current-voltage characteristics in all three directions along the a, b , and c axes obey a power law with the exponent increasing with a d…
The modification and characterization of porous particles and matrices using cyclodextrins (CD) have attracted a large amount of interest in recent years. In fact, CDs are at the heart of this study that aims to graft β-CD onto silica particles by means of efficient protocols and nonconventional energy sources. In par…
Plasmonic nanostructures offer promising routes toward artificial control of the photoluminescence properties of various emitters. Here, we investigated the photoluminescence of carboxyl-functionalized CdSe/ZnS core–shell quantum dots (c-QDs) localized near gold nanorods (AuNRs) as a function of c-QDs–AuNRs distance u…
This study was carried out to investigate the effect of solidification cooling rate on the corrosion resistance of an Mg–Zn–Ca alloy developed for biomedical applications. A wedge shaped copper mould was used to obtain different solidification cooling rates. Electrochemical and immersion tests were employed to measure…
Electrospun nanofibers based antimicrobial filter were examined for their capability to build conductive environment. An antimicrobial agent, silver nitrate (AgNO3), was added to the nanofibers membrane for its ability to prevent growth of microorganisms over the filter media. In this direction in the present investig…
Bulk carbon nanomaterials, which open prospects for the development of a new generation of supercapacitors, are actively investigated for recent years, but their mechanical properties and structure remain poorly understood. In connection with this fact, the influence of the hydrostatic and uniaxial compression on mech…
Cross-linked inulin (X-inulin) microparticles were synthesized in reverse micelles using water-in-oil microemulsion polymerization. Linear inulin was crosslinked with divinyl sulfone (DVS) in a sodium bis(2-ethylhexyl) sulfosuccinate (AOT) inverse microemulsion under basic conditions. These particles were demonstrated…
An apparatus for measuring the Seebeck coefficient and electrical conductivity is presented and characterized. The device can be used in a wide temperature range from room temperature to 1050 °C and in all common atmospheres, including oxidizing, reducing, humid, and inert. The apparatus is suitable for samples with d…
The inhibition of the corrosion of aluminium alloy in 3.5 wt.% NaCl solution by 8-hydroxyquinoline has been studied using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, scanning electrochemical microscopy (SECM) and scanning electron microscopy (SEM). Inhibition efficiency was found to inc…
The paper proposes a discrete mechanical model of monolayer graphene. A relation between parameters of the model and elastic characteristics of its equivalent continuum is derived by comparing the energy of small strains on micro- and macroscales. The relation allows one to determine the microscale interaction paramet…
A convenient synthesis has been achieved of 11 substituted phthalazines starting from the condensation of 2-( p-toluoyl)benzoic acid with hydrazine and some of its simple congeners, H 2 NNHR. Four of the phthalazines showed activity as inhibitors of the corrosion of steel immersed in 5 M HCl solutions.
The process of plastic deformation in ultrafine grain titanium is considered. Using the methods of speckle photography and X-ray diffractometry, the distributions of local strains and of local elastic distortions were examined for the test sample work. It is shown that the method of atomic-force microscopy can be used…
A transformer oil based nanofluid has been prepared by dispersing TiO2nanoparticles into mineral oil to improve insulating properties of the host oil. The AC, DC and lightening impulse breakdown voltage and partial discharge characteristics of fresh and aged samples were measured according to IEC standard methods. The…
Summary We present a simple strategy for the fabrication of poly(propylene) (PP) superhydrophobic surfaces, i.e., surfaces that show water contact angle (WCA) ≥ 150° after a simple dipping process. Injection‐moulded PP samples were coated with titanium dioxide nanoparticles previously functionalised with trimethoxy pr…
The most dangerous type of corrosion in petroleum-product pipeline systems is pitting corrosion. Measurements of the pipe thickness and coercive force permit the description of local catastrophic corrosive failure in such pipelines. Accidents may be prevented by the proposed method of nondestructive weld monitoring an…
We present a low cost and scalable technique for the synthesis of graphene using solid carbon source. Filtered cathodic vacuum arc technique (FCVA) has been utilized to deposit amorphous carbon (a-C) films of thickness of 3 and 6 nm on nickel film grown on SiO2/Si substrate. Subsequently, a-C films were annealed at 75…