Materials Literature
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Density and surface tension of liquid Ni-Cu-Fe alloys have been measured over a wide temperature range, including the undercooled regime. A non-contact technique was used, consisting of an electrom ...
High strength steels have been developed in order to improve fuel economy as well as to increase safety. The conventional Si-Mn bearing high strength steels have the drawback of poor galvanisability due to the presence of complex Si-Mn oxides on their surface. In order to improve the galvanisability of Si-Mn steels, t…
Magnetic fluids mainly consist of nano sized iron oxide particles (Fe3O4 or γ- Fe2O3) that are suspended in carrier liquid. In recent years, substantial progress has been made in developing technologies in the field of magnetic nanoparticles, microspheres, magnetic nanospheres and ferrofluids. Techniques based on usin…
Polyurethane-based composites have become an accepted alternative in the pultrusion industry, especially for applications requiring high strength and durability. Pultruded composites based on two-component polyurethanes are now widely known to exhibit superior strength and toughness compared to traditional pultrusion…
This work investigates the effect of warp and weft density on the bending properties of polyester viscose woven fabrics. 25 lightweight woven fabrics of different densities were produced and evaluated with three methods; KES, extraction, and a newly-suggested method. The test results of the three methods were compared…
A new method of pipe joining using shape memory alloys (SMAs) is proposed in this study to obtain the maximum and uniform joining stress. Fe-based SMAs, regarded as potential alloys for pipe couplings, is not so widely industrialized as anticipated. The major obstacle is error of pipe size, which causes a gap between…
Abstract In this article, we review the possibility of combining conjugated polymers with nanometer-scale devices (nanodevices), in order to introduce the properties associated with conjugated polymers into such nanodevices. This approach envisages combining the highly topical disciplines of polymer electronics and na…
The square-planar AuIII complex of the unsymmetrical tfadt dithiolate ligand (tfadt: 2-(trifluoromethyl)acrylonitrile-1,2-dithiolate) is found to exhibit conformational polymorphism in its n-Bu4N+ salt, as both cis and trans isomers were found to crystallize separately in the same crystallization batch. Electrocrystal…
The dependence of electron field emission (FE) characteristics of porous silicon (por-Si) prepared by anodisation at low current density without external bias is investigated. Effective electron FE from por-Si on p-Si flat surface was revealed. With growth of anodisation current (from 1 mA/cm² to 5 mA/cm²) the electro…
We theoretically examine four hypothetical ternary lanthanide hydrides, CsLnIIH3 and Cs2LnIIH4, where LnII = Yb, Tm. We optimize their crystal unit cells in the BaTiO3 and K2NiF4 structures, respectively, and compute their electronic band structures. Our calculations indicate that the novel hydrides should be unstable…
In this study, the effect of RE content on the microstructure and creep properties of Mg–8Al–xRE (x=0, 1, 2 or 3 mass%) alloys were investigated. The microstructural analysis and phase characterizations of Mg–8Al alloy with 1–3 mass% RE (La-rich Mischmetal) additions were conducted. (i) The as-extruded Mg–8Al–xRE allo…
The aim of this work is to understand the interactions and interphase formation mechanisms between a liquid aminosilane oligomer (γ-APS) and glass, steel or gold surfaces as a function of the pH of the liquid aminosilane. When basic liquid γ-APS (pH 11.4) is applied onto a gold coated substrate, no interphase is detec…
Electrical, electro-optical, mechanical and microstructural characterizations explain why the leakage currents in advanced Cu/ultra-low K interconnects can change from bulk (3D) to mostly interfacial (2D) above 150degC. A physical model consistent with all these results is proposed
X-ray crystallographic analysis has been used to determine the structure of the nematic liquid crystal, 4,4’-dimethoxy-2,2’-dihydroxybenzalazine (1). Benzalazine (1) is centrosymmetric, with two benzene rings that are almost coplanar with the azine bridge. Two intramolecular hydrogen bonds are observed between the OH…
Composite mover device constructed with both negative and positive magnetostrictive thin films on each side surface of silicon substrate were prepared by DC magnetron sputtering process. The magnetic field induced mover strain (an apparent magnetostriction) of composite mover device at 150 kA/m of magnetic field was a…
Abstract A planar metamaterial structure consisting of two layers of split-ring resonator (SRR) arrays is demonstrated to form the image of a point source with subwavelength resolution. The source frequency is swept through the resonance gap of the metamaterial layers and the lateral field intensity distribution is re…
It is shown that N -confused porphyrins exhibit tautomerism not only in organic solvents, as already reported, but also after incorporation in dry/humid Nafion films. This allows the development of a new fiber-optic humidity sensor which exhibits long-term stability and a linear response over the humidity range 0 to a…
The coordinations of nitrogenous polysaccharide chitosan and chitin to chloro[tetraphenylporphinato]iron(III) have been investigated by means of the FTIR and UV-VIS analysis techniques, and the effect of their coordination on the aerobic oxidation of cyclohexane catalyzed by ironporphyrin has been studied. The new Fe-…
In this paper, the applications of s-FEM that involve initial strain-like terms are presented. When s-FEM is applied to the analyses of composite materials, the overall structure or the region of unit cell is modeled by a global finite element model and each reinforcing particle/fiber and its immediate vicinity are mo…
A comparative IR‐spectral study of 3‐phenyl‐(DPhP) and 3‐methyl‐(MPhP) substituted 1‐phenyl‐pyrazol‐5‐ones both in solution and in the solid state was performed. It is shown that aprotic solvents stabilized the oxo (CH) tautomers, but the protic ones shifted the tautomeric equilibrium to the hydroxy (OH) forms. A zwit…