Materials Literature
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Bearings are used mostly in the quenched and tempered state, e.g., steel 100CrMnSi6-4 with a microstructure of low-tempered martensite and carbide particles undissolved during the quenching austenitization. The size and density of the particles depend on the spheroidisation annealing which is the standard operation at…
A novel homologous series of liquid crystals (LC) of chalconyl derivatives is synthesized and studied with a view to understanding and establishing the effects of molecular structure on liquid crystal properties. The novel series consists of 12 homologues. Nematogenic LC property commences from C3 and continues up to…
A novel homologous series of thermotropic derivatives containing a heterocyclic ring was synthesized and studied with a view to understanding and establishing a relation between liquid crystal (LC) properties and the molecular structure of chalconyl derivative in general. The series comprises 12 homologues, of which s…
The pyridoxal 5-phosphate (PLP) cofactor is a significant organic molecule in medicinal chemistry. It is often found covalently bound to lysine residues in proteins to form PLP dependent enzymes. An example of this family of PLP dependent enzymes is γ-aminobutyric acid aminotransferase (GABA-AT) which is responsible f…
We report on the tunnel magnetoresistance (TMR) effect of perpendicular magnetic tunnel junctions (p-MTJs) composed of a ferromagnetic antiperovskite MnGaN film with perpendicular magnetic anisotropy. The p-MTJ multilayer stack with MnGaN/Mg/MgO/Fe/CoFeB was used to control the MgO interface conditions by the Mg and F…
Abstract Chiral gelators 3 and 4 , with two valinol‐ or leucinol‐oxalamido arms attached to the 2,2′‐positions of the proatropisomeric biphenyl group, were prepared, and their gels were studied. Compound ( R , R )‐ 3 in the solution and gel states forms a mixture of major [( R , aR , R )‐ 3 ] and minor [( R , aS , R )…
This paper studies the effectiveness of lab scale ‘air laid machine’ designed in the Laboratory of Textile Engineering in ISET of Ksar Hellal, Tunisia for production of nonwoven. Three different types of fibers were used: cotton, kenaf, and polyester. The uniformity of the nonwovens made in terms of thickness, weight…
We report the magnetic-field-dependent shift of the electron chemical potential in bulk, $n$-type GaAs at room temperature. A transient voltage of $\ensuremath{\sim}100\phantom{\rule{0.16em}{0ex}}\ensuremath{\mu}\mathrm{V}$ was measured across a Au-${\mathrm{Al}}_{2}{\mathrm{O}}_{3}$-GaAs metal-oxide-semiconductor cap…
SrFe12O19/SrTiO3 photocatalyst was synthesized with solgel method. The as-prepared composite catalyst was characterized by XRD, IR, SEM, BET, UV–vis and VSM. It was revealed that the specific surface area of SrFe12O19/SrTiO3 was larger than that of pure SrTiO3. The maximum absorption wavelength (λmax) of the composite…
Regenerated cellulose films prepared using NaOH/urea solvent system were exposed to different doses of γ‐radiation, ranging from 5 to 50 kGy to modify their properties. Change in relative crystallinity as a function of absorbed dose was studied using XRD. The tensile and dynamic mechanical properties were tested and i…
The mechanical properties of biocompatible poly(L-lactide) (PLA) could be dramatically enhanced by cross-linking and interesting network structures might be achieved via the formation of branched and star-shaped structures prior to such cross-linking.However, the synthesis of a four-armed starshaped PLA is limited to…
In the presented work, a model is created in order to investigate the effect of different material parameters and operating conditions on the anode diffusion overpotential, which influence the exergy and energy efficiency of the solid oxide fuel cell (SOFC). In this research, it was demonstrated that the anode materia…
Abstract To survey the noninnocence of bis(arylimino) acenaphthene (BIAN) ligands (L) in complexes with early metals, the homoleptic vanadium complex, [V(L) 3 ] ( 1 ), and its monocation, [V(L) 3 ]PF 6 ( 2 ), were synthesized. These complexes were found to have a very rich electronic behavior, whereby 1 displays stron…
Abstract The swelling of dissolving pulps has been investigated by a new method based on the Morfi R analyser, which is measuring the width variation of thousands of fibres in a cupriethylenediamine (CUEN) solution in a few minutes. Pulps from various origins were analysed coming from softwood, birch wood, eucalyptus…
Heteroleptic iron(III) complexes of formula [Fe(qsal-Cl)(thsa)]∙nMeCN have been synthesized; [Fe(qsal-Cl)(thsa)]∙MeCN, 1 and [Fe(qsal-Cl)(thsa)], 2. The latter can be obtained by slow evaporation of solutions of compound 1 under ambient conditions, a rare occurrence in nonporous compounds. 1 interestingly shows a uniq…
Supermartensitic stainless steels (SMSSs) allow high mechanical strength with better corrosion resistance and toughness than conventional martensitic stainless steels. The SMSS steels with 12–13%Cr have been studied and applied in the oil and gas offshore production. The increase of Cr content, and the addition of Mo…
We report on the fabrication of gallium phosphide (GaP) nanowaveguides of controlled dimensions, as small as 0.03 μm and aspect ratio in excess of 20, using focused ion beam (FIB) milling. A known limitation of this fabrication process for photonic applications is the formation of gallium droplets on the surface. We d…
It has been found that in the media where the dielectric permittivity ε or the magnetic permeability μ is near zero and in transition metamaterials where ε or μ changes from positive to negative values, there occur a strong absorption or amplification of the electromagnetic wave energy in the presence of an infinitesi…
The present work reports a comparative investigation of the electrochemical behaviour of some new types of silica sol–gel coatings with enhanced corrosion resistance deposited on electrolytically or thermally (hot-dip) zinc-coated steel. The coatings were rendered hydrophobic by silylation. Dichlorodimethylsilane or t…
We study the magnetic anisotropy of a single iron phthalocyanine (FePc) molecule on a Cu(110) (2 × 1)-O by using inelastic electron tunneling spectroscopy (IETS) with low-temperature scanning tunneling microscopy. Two inelastic excitations derived from the splitting of the molecular triplet spin state appear as two pa…