Materials Literature
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The possible existence of a sign-changing gap symmetry in BaFe2As2-derived superconductors (SC) has been an exciting topic of research in the last few years. To further investigate this subject we combine Electron Spin Resonance (ESR) and pressure-dependent transport measurements to investigate magnetic pair-breaking…
With the growing use of electronic soft-starters for starting fixed-speed three-phase squirrel-cage induction motors with a rated power higher than 4 kW, the six-terminal star/delta-connection stator windings with delta as the nominal connection, used for the typical contactor-based star-delta starting, are not mandat…
A new laser ablation chamber design for KrF excimer laser synthesis of carbon nanomaterials, including nano-onions, is reported. The conditions for carbon nano-onions deposition, using excimer laser to ablate a commercial pure graphite target, were investigated. The transmission electron microscopy analysis of the col…
Superhydrophobic films fabricated on copper and aluminum surfaces have potential applications to solve water condensation and frosting problems on chilled ceiling system. The rough surfaces of copper foils obtained by solution immersion method exhibit the existence of fractal structures. The hydrophobicity of copper s…
Copper-based ternary chalcogenide semiconductors with zincblende-related crystal structures have recently emerged as some of the best performing p-type thermoelectric materials. Here, first-principles calculations are used to investigate the structural, elastic, and thermoelectric properties of Cu3SbSe4 and Cu3SbS4. T…
Monolayer graphene films through nickel catalyzed transformation of fullerol and graphene quantum dots: a Raman spectroscopy study, Prekodravac, J R, Jovanović, S P, Holclajtner-Antunović, I D, Peruško, D B, Pavlović, V B, Tošić, D D, Todorović-Marković, B M, Marković, Z M
A previous approach for constructing dynamic compact thermal models of nonlinear heat diffusion in electronic components is extended from the single-port to the multi-port case. The approach maintains high levels of accuracy for small state-space dimensions of the model. It is also very efficient since it requires the…
The efficiency of Thymus vulgarise extract (TVE) as a nontoxic corrosion inhibitor for copper and abrass in 1 M HNO3 has been tested by weight loss and electrochemical techniques such as potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques…
Because of the classification of the nickel compounds as carcinogenic substances, there is a need for in vivo tests to nickel nanoparticles (NiNPs) for observing their effects on health experimentally. Spherical NiNPs with 10 nm in diameter and 75 ppm concentration were applied for investigating their toxicities withi…
Polyaniline (PANI) was prepared by chemical method using FeCl3 as oxidizing agent. Emeraldine base (EB) was prepared using 0.1 M ammonia solution, and redoped using HCl, (±)-10-camphorsulfonic acid (CSA) and p-toluenesulfonic acid (PTSA). The electrical conductivity of EB was increased by doping. Polyphenylacetylene (…
A space-charge-controlled optical beam deflector made of a KTa 1− x Nb x O 3 (KTN) single crystal utilizes electrons that are injected through the cathode by applying voltage. With the deflector made of lithium-doped KTN (K 0.95 Li 0.05 Ta 0.73 Nb 0.27 O 3 , KLTN/0.05/0.27), we observed large increases in the capacita…
The relationship between impregnation process and winding temperature has not been analyzed in detail yet. Therefore, one purpose of this paper is to investigate the correlation between impregnation process, resin absorption, applied resin, and thermal behavior. Apart from thermal behavior, it has to be ensured that t…
Instability of targeting ligand is a roadblock towards successful development of folate targeted liposomes. Folate ligands have been linked to polyethylene glycol (PEG) and cholesterol by an amide bond to form folate-CONH-PEG-CONH-Cholesterol (F-CONH-PEG-CONH-Chol), which is subject to hydrolysis. To increase the stab…
The Mg corrosion mechanism was explored using galvanostatic polarisation curves, hydrogen evolution and weight loss. The data (a) were consistent with the existence of the uni-positive Mg+ ion, (b) indicated that some hydrogen dissolved in the WE43 metal, and (c) indicated that self corrosion was more important than t…
We demonstrate lateral control of carrier concentration in doped Si for mid-infrared plasmonic applications. Using commercially available spin-dopants, we show that doped silicon can act as a plasmonic material at mid-infrared wavelengths, and that control of the doping pattern allows for the development of flat, sing…
We have presented dielectric studies on Zn1−xCoxO, Zn1−xFexO, and Zn1−xFex/2Cox/2O (x = doping level) semiconducting nanoparticles (∼2–40 nm). For all those samples, dielectric constant (є) is found to exhibit a maximum with x. Enhancement of є is found to be ∼250 times for Zn0.85Co0.15O and ∼400 times for Zn0.8Fe0.1C…
Chromium doped ZnS nanocrystals with pure and 10% compositions were synthesized by chemical co-precipitation route. Samples were characterized by X-ray diffraction (XRD) technique, Fourier transforms infrared spectroscopy (FTIR) and UV-Visible spectrometer. Lattice parameter 'a' decreases and grain size increases with…
Supercapacitors are promising energy storage devices providing capacitance much higher than conventional capacitors and higher power density and longer cycle life than Li-batteries. We report printable and disposable supercapacitors fabricated from solution-processed carbon nanotube (CNT) composite material as active…
Abstract A bentonite from Milos, Greece, was activated with oxalic acid and the effect of acid activation conditions on bleaching of sunflower oil was investigated. The activation parameters studied were temperature, retention time and oxalic acid to bentonite mass ratio. The activated materials produced had good blea…
Composite, diffusive titanium nitride layers formed on a titanium and aluminum sub-layer were produced on the AZ91D magnesium alloy. The layers were obtained using a hybrid method which combined the PVD processes with the final sealing by a hydrothermal treatment. The microstructure, resistance to corrosion, mechanica…