Materials Literature
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The Sc 2 (WO 4 ) 3 type structure has been used in order to create new trivalent cation conducting solid electrolytes by forming solid solutions of the type (Sc 2 (WO 4 ) 3 ) 1– x (M 2 (MoO 4 ) 3 ) x (M=Nd, Sm, Gd, Lu). In these compounds, the anionic part of the structure is partly replaced by molybdate (WO 4 →MoO 4…
Aluminium thin films grown with different thickness on silicon substrates were analyzed by atomic force microscopy and grazing incidence x-ray techniques. Stress on surface film was found to be greater as the thickness increases because of the substrate history. Roughness measurements made on the AFM images shown a li…
In this work, the effect of mimosa tannin (MT) on corrosion processes on steel in sulfuric acid solutions of pH 1 to 3 was investigated using potentiodynamic polarization and mass loss methods. The nature of complexes formed by the used commercial MT product with ferric ions was investigated by specrophotometric metho…
Backscattered electron (BSE) imaging is most commonly performed by applying accelerating voltages of 10kV and above to the specimen. For imaging of surface detail, the application of a lower accelerating voltage results in less beam penetration, spread and overall specimen damage. A field emission scanning electron mi…
This paper presents a composite insulation technology for a new compact 72/84 kV C-GIS-cubicle type gas insulated switchgear. The dielectric characteristics of a composite insulation structure composed of low-pressure SF/sub 6/ and epoxy are shown. It is clarified that this structure is effective in increasing withsta…
The formation of real-time holographic gratings was investigated in an azobenzene polymer liquid crystal (PLC) possessing a siloxane spacer in the side chain. Irradiation of thin films of the PLCs created a phase grating which is ascribed to periodic induction of the nematic-to-isotropic (N–I) phase transition due to…
2-Aminothiophene derivatives are the key intermediates for the present synthesis. It is known that the synthesis of 2-aminothiophene is troublesome although it is a rather simple heterocycle. In this work, an early report was newly developed as a basis for the efficient synthesis of thiophene-ring-containing chromopho…
The dielectric and piezoelectric response of ferroelectric thin films and ceramics was investigated as a function of the driving field amplitude. Detailed analysis of the amplitude and phase angle of the third harmonic of the dielectric displacement and piezoelectrically induced charge shows that the usual phenomenolo…
The structural changes occurring during the thermal decomposition of ammonium tetrathiotungstate to form amorphous WS 3 and poorly crystalline WS 2 have been studied in situ using combined extended X-ray absorption fine structure (EXAFS) spectroscopy at the tungsten L III -edge and X-ray diffraction. Data collected du…
29 Si and 13C MAS NMR spectroscopy, DTA–TG and elemental analysis were used to study the evolution of metastable oxycarbide phases starting from thin gel sheets derived from methyltriethoxysilane (MTEOS), tetraethoxysilane (TEOS) and a colloidal silica containing sol, up to 1450 °C under a nitrogen atmosphere. The sto…
Gold catalysts supported on titanium oxide (TiO 2 ) have been prepared by using nano-sized gold particle/nylon-11 oligomer composites. The composite was prepared through vapor-deposition of gold onto a nylon-11 oligomer film followed by heat treatment. The gold particles/nylon-11 oligomer composite in solution was ads…
Abstract Anisotropy of magnetic susceptibility (AMS), as revealed by mathematical modelling and empirical studies, sensitively reflects initial ductile deformation associated with diagenesis and early tectonism. In rocks shortened vertically because of the gravitational loading by the weight of overlying strata, the d…
Polyacrylamide(PAM)–semiconductor MS (M = Cd, Zn, Pb) nanocomposites with homogeneously well dispersed semiconductor nanoparticles in the polymer matrices were prepared by a novel in situ simultaneous polymerization–hydrolysis technique (SPH).
The adsorption kinetics of hen egg white lysozyme (HEWL) in the presence of NaSCN at pH 7.4 onto Si0.8Ti0.2O2 surfaces were measured by means of time-resolved optical waveguide lightmode spectroscopy (OWLS). The adsorption kinetics were characterized by the presence of a lag phase whose duration decreased with increas…
In this paper, we report successful extension of the solid-solubility limit of copper at the transition element site in the ${(\mathrm{B}\mathrm{a},\mathrm{L}\mathrm{a})\mathrm{Y}(\mathrm{C}\mathrm{u},\mathrm{F}\mathrm{e})}_{2}{\mathrm{O}}_{5+\mathrm{\ensuremath{\delta}}}$ phase of the double-perovskite ``0112'' struc…
In this study, we investigate the change in the magnetic properties of magnetostrictive Fe/sub 77.5/Si/sub 7.5/B/sub 15/ amorphous wires thinned by chemical etching focusing on domain structure. It is found that the re-entrant flux reversal characteristic is still maintained even in the wire chemically thinned to a di…
The organometallic compounds [4-O 2 NC 6 H 3 (2-CH 3 )N=NC 6 H 3 (5′-CH 3 )-2′-(η 5 -C 5 H 4 )Fe(η 5 -C 5 H 5 )] 1 and [Mo(Cl)(Tp An )(NO){NHC 6 H 3 (3-CH 3 )[N=NC 6 H 3 (5-CH 3 )-2-(η 5 -C 5 H 4 )Fe(η 5 -C 5 H 5 )]-4}] 2 {Tp An =hydrotris[3-(p-methoxyphenyl)pyrazol-1-yl]borate} have been synthesized, characterized an…
New metallophthalocyanines (M=Cu, Zn, Ni or Co) substituted in peripheral positions with four 11-membered triaza macrocycles are prepared from 1,4,7-tris(p-tolylsulfonyl)-1,4,7-triazaheptane and 1,2-dibromo-4,5-bis(bromomethyl)benzene or the corresponding anhydrous metal salt [CuCN, Zn(O2CMe)2, NiCl2 or CoCl2].
A bola-amphiphile surfactant, containing a carboxylic acid at one end of the molecule and a thiol at the other, was bonded to nanoparticles of amorphous iron. The bonding of both functional groups was verified by FTIR and XPS measurements. TPD measurements exhibited three temperatures at which molecules are removed fr…
Experimental solubilities are reported at 25.0°C for phenanthrene dissolved in 41 different organic nonelectrolyte solvents containing ether, carbonyl, hydroxy, chloro, amino, ester, methyl and tert-butyl functional groups. Results of these measurements are used to test the applications and limitations of expressions…