Materials Literature
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Thin film conducting polymer thiophene based that is poly(3,4-ethylenedioxythiophene): poly(styrene sulphonic acid) (PEDOT:PSS) blended with Polyaniline (PANi) have been prepared with different composition by using drop casting technique. The optical characterization has been done by analyzing the absorbance spectra i…
In this paper, the effects of rotor eccentricity (RE) on power losses in switched reluctance motor (SRM) with driver is studied. Two major asymmetrical faults namely as; dynamic eccentricity (DE) and static eccentricity (SE) are implemented with different percentages of eccentricity in a 6/4 SRM. Then different kinds…
Abstract A series of lanthanide metal‐organic frameworks, Ln4(TDC)6(DMF)4(H2O)2, where Ln = Nd (1), Sm (2), Eu (3), Gd (4), TDC2− = thiophene‐2,5‐dicarboxylate, have been synthesized at 80 °C in mixed H2O/DMF. Structural characterizations by single‐crystal X‐ray crystallography reveal that 1∼4 are isomorphous and adop…
Twisting of Radio waves is a hot topic that is being worked upon which utilizes the many OAM (Orbital Angular Momentum) states to transmit data at the same frequency. Twisting of antennas is done to transmit the various orthogonal OAM states that can be used as basis functions in N-dimensional signaling. The utilizati…
Co/Cu multilayers were electrodeposited in a single electrolyte using the pulse potential method and the layer thickness was precisely controlled in accordance with Faraday's law. X-ray diffraction revealed that multilayers with layer thicknesses in the range of 25–100 nm consisted of fcc-Co and fcc-Cu phases. For lay…
The descent module (DM) of the ISS Soyuz vehicle is covered by thermal protection system (TPS) materials that provide protection from heating conditions experienced during reentry. Damage and penetration of these materials by micrometeoroid and orbital debris (MMOD) impacts could result in loss of vehicle during retur…
Use of composites of actinide oxides dispersed in a Mo metal matrix is a recent inert matrix fuel concept for the transmutation of Pu and the minor actinides (Np, Am, and Cm). These elements are present in spent nuclear fuel, and their long-term radiotoxicity can be minimized if they are recovered from the fuel and ir…
Rossella Tarallo,1 Tom P Carberry,2 Annarita Falanga,1 Mariateresa Vitiello,3 Stefania Galdiero,1 Massimiliano Galdiero,3 Marcus Weck21Dipartimento di Farmacia, Università di Napoli "Federico II," and DFM Scarl, Napoli, Italia; 2Molecular Design Institute and Department of Chemistry, New York University, New York, NY,…
Digital processing on fractographic images of fracture surfaces was performed, for the weld metal aged at 250 ; C for 500 and 900 hours. The digital analysis on fractographs was carried out using mathematical morphology and morphological transformation in order to gain specific structures of the images. The results sh…
Recent biographical sources suggest that an individual by the name of Jean-Baptiste De Beunie, a physician who lived more than two centuries ago in what is now northern Belgium, came up with the idea of a three-class granulometry for soils and the perspective that the clay fraction determines the fertility of soils. T…
Gallium nitride is considered as the most promising material for liquid-phase sensor applications due to its chemical stability and high internal piezoelectric polarization. In this work, the sensing responses of undoped-AlGaN/GaN two terminal devices upon exposure to various pH levels in aqueous solution (a mixture o…
By adjusting experimental parameters, such as reaction time and ratios, CeO2/CePO4 composites have been prepared through a single-step hydrothermal process, in which CeO2 octahedra and CePO4 nanowires mingled with each other to form many interfaces. The formation of the particular structure can be explained by heterog…
Fe-doped ZnO film has been grown by laser molecular beam epitaxy (L-MBE) and structurally characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), all of which reveal the high quality of the film. No secondary phase was detected. Resonant photoemission spectroscopy (RPES) with photon energies a…
An important parameter in the design and analysis of a nuclear reactor is the reactivity worth of the control rod which is a measure of the efficiency of the control rod to absorb excess reactivity. During reactor operation, the control rod worth is affected by factors such as the fuel burnup, Xenon concentration, Sam…
Early stages of copper corrosion behavior in NaCl, Na2SO4, humic acid and Tunisian soil have been examined using surface analysis (OM and AFM) as well as polarization curves. For different media, ranking has been established using R q, E corr, βa, βc, I corr, B, R p and E b. The results reveal that patina formed at th…
Due to their strong surface energy anisotropy, subboundaries generally do not intersect solid–melt interfaces at right angles. As a consequence, subboundary surface grooves move laterally during solidification, and thereby interact, in alloys, with the solute concentration gradients created in the liquid. We discuss t…
Non-isothermal change in electrical resistance was used to investigate the crystallization process of GaSb-Sb2Te3 pseudobinary films prepared by co-sputtering using GaSb and Sb2Te3 targets. The crystallization parameters were determined directly by in-situ electrical resistance-temperature measurements. The activation…
The structure and mechanism of the formation of superlattices lamellae in microporous polyolefine (polyethylene and polypropylene) films obtained by polymer melt extrusion followed by annealing, uniaxial extension, and thermal fixation stages have been studied by scanning electron and atomic-force microscopy. It has b…
A number of tertiary amines and organotin catalysts for the phenyl isocyanate- 1,2-propylene glycol reaction were investigated by using in situ FT-IR. The reaction rate of each hydroxyl group, which is defined as the ratio between the rate constant of the secondary hydroxyl group and the rate constant of the primary h…
The aluminazirconia composites are one of the relatively good and promising candidates for biomaterials application, due to biocompatibility and their mechanical properties that combines high exural strength with a high toughness. The aim of the present work is to analyze the mechanical properties of these composites,…