Materials Literature
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The method of cyclic voltammetry (CV) was used to compare electrochemical and electrocatalytic properties of meso -triphenylcorrole [H 3 ( ms -Ph) 3 Cor] and also its complexes with Mn(III), Co(III), Cu(III), and Zn(II) in 0.1M KOH. Metal-localized redox transitions are detected in the complexes of Mn (III → IV) and (…
Abstract Fabric softeners are mainly used to reduce roughness and static electricity of textiles, as well as adding a scent to them. In this paper we study how fabric softeners are related to odour properties on clothing. We combine a Norwegian consumer survey with a sensory test on odour development on four different…
Abstract Boron‐doped homoepitaxial diamond films are deposited from ethanol/trimethyl borate/hydrogen mixtures activated by microwave (MW) discharge plasma. The high smoothness, uniform distribution of boron atoms located predominantly in substitution positions, and low concentration of the nitrogen‐compensating impur…
Corrosion behaviour of Mg-xSc (x=0, 3, 5, wt.%) alloys prepared by zone purifying solidification technique has been investigated by immersion test and electrochemical measurement in both 0.9 wt.% NaCl solution and simulated body fluid. The results of immersion test show the corrosion resistance of Mg-3wt.%Sc alloy in…
Nanopowders of ZnO pure and doped with boron have been synthesized through sonochemical method using acetate of the material as starting reagent. The incorporation of boron has been confirmed by inductively coupled plasma-optical emission spectroscopy (ICP-OES) analysis. Continuous (CS) and pulsed (PS) mode syntheses…
Gradient Zirconia toughened alumina (ZTA) ceramics with high fracture strength and toughness were prepared using centrifugal slip casting method. Aqueous Al2O3-20vol% ZrO2 slurries with different solid contents were prepared and the rheological characteristic of the slurries were investigated. The effect of solid load…
The article presents the results of studying the thermal expansion of MPG-6 and AXF-5Q graphites and graphite composite based on 13 C isotope in the temperature range 293–1650 K. Measurements were performed with dilatometric method in DIL-402C unit manufactured by NETZSCH (Germany), with the accuracy of (1÷4)×10 −7 K…
AgNbO 3 has been reported to undergo an antiferroelectric–ferroelectric phase transition between two orthorhombic phases (labeled M 2 and M 1 ) on cooling below ∼340 K. However, the phase transition mechanism is still not well understood, with different space groups proposed for the structure on the basis of different…
Abstract Summary: Given the demand for renewable resources by industries and the promising potential of vegetable oils for this purpose, the current study aims to evaluate the properties of polyurethanes (PUs) obtained from linseed ( Linum usitatissimun L.) oil (PULO) and passion fruit ( Passiflora edulis Sims f. flav…
Abstract A multifunctional and durable nanofiber‐fabric‐layered composite (NFLC) material was prepared by depositing electrospun Ag/PAN hybrid nanofibers onto a Nylon/cotton 50: 50 fabric substrate. The NFLCs showed excellent aerosol barrier efficiency and good air/moisture permeability. In addition, they showed excel…
Composite films were obtained from aqueous solutions of blends of carboxymethyl cellulose ionized to various degrees and poly- N -vinylformamide. The composition ranges in which the polymers are compatible were determined by solvent vapor sorption and by dynamic mechanical analysis. The heat resistance of the films an…
The present experimental study reports on hydrogen desorption behavior of hydrogenated single-walled carbon nanotubes (SWCNTs), functionalized with borane (BH3). Desorption is carried out using a thermal annealing technique. The hydrogenated samples are annealed at 200°C for 30 min and characterized using Fourier tran…
Ferroelectric-like nanodomains have been written by applying voltage pulse of different durations to the surface of La0.89Sr0.11MnO3 manganite single crystals and subsequently examined by the piezoresponse force microscope (PFM) technique. The domain wall velocity was then calculated based on conventional PFM procedur…
The effects of compressive stress on the TO phonon frequencies of hexagonal boron nitride (hBN) in cubic BN (cBN) films were investigated using infrared absorption spectroscopy, showing that the B–N stretching vibration of hBN at 1380 cm−1 shifted to high wavenumbers under biaxial compressive stress with the rate 2.65…
A method was developed for the synthesis of three rhenium complexes, (5,10,15,20-tetraphenyl-21 H ,23 H -porphinato)(phenoxo)rhenium(III) (PhO)ReTPP, (5,10,15,20-tetraphenyl-21 H ,23 H -porphi-nato)(chloro)rhenium(III) (Cl)ReTPP, and μ-oxo-bis[(oxo)-(5,10,15,20-tetraphenyl-21 H ,23 H -porphi-nato)rhenium(V)] [O=ReTPP]…
A low absorptivity broadband negative refractive index metamaterial with a multi-gap split-ring and metallic cross (MSMC) structure is proposed and investigated numerically and experimentally in the microwave frequency range. The effective media parameters were retrieved from the numerical and experimental results, wh…
Abstract Low‐molecular‐weight poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO) with unimodal polydispersity was synthesized by oxidative polymerization of 2,6‐dimethylphenol in the presence of Cu‐ethylene diamine tetraacetic acid catalyst in water. A series of low‐molecular‐weight PPO oligomers with M n ranged from 360 to…
In this work, thermoplastic starch-clay composite films were prepared via solution casting method. The use of acid-modified clay including kaolinite (HKAO) and vermiculite (HVER) improved the thermal properties of starch matrix. The structure of films was investigated and characterized by XRD and SEM techniques. The r…
Accurate measurement of power losses of high efficiency motors is difficult with the input-output method. In the calorimetric method, the power losses are measured directly rather than using the power difference between the electrical input power and mechanical shaft power. This paper describes a practical calorimetri…
By using the nonequilibrium Green’s function combined with the tight-binding Hamiltonian, we have studied the effects of the edge states on the conductance and the thermopower for zigzag bilayer graphene nanoribbons (ZBGNs). It is shows that the band structure, conductance, and thermopower can be modulated by the boun…