Materials Literature
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The application of high-frequency ultrasonic spray pyrolysis (USP) of aqueous solutions for the preparation of the NiO-CuO/10%MgO catalyst is discussed. The installation for the catalyst synthesis consists of a household humidifier, a furnace for drying the formed aerosol, and an electric precipitator for collecting t…
A novel technique of photolithography using a proximity exposure system—named built-in lens mask lithography—is proposed. The built-in lens mask having complex optical transmittance emulates the optical propagation plane in the focusing of an image having an arbitrary pattern. The complex transmittance of the built-in…
Zinc silicate (Zn 2 SiO 4 ) nanorods with diameters of 90–100 nm and lengths of up to 600–700 nm have been successfully prepared by a simple hydrothermal route without the assistance of any templates or surfactants. The characterisations of the products were carried out by X‐ray diffraction (XRD), field‐emission scann…
This paper presents a novel circularly polarized Fabry-Perot (CPFP) antenna which can achieve high gain and wide bandwidth simultaneously. In the proposed antenna, a wideband circularly polarized (CP) microstrip patch is employed as the feeding source and a two-layer Partially Reflective Surface (PRS) with positive re…
Washfastness and crockfastness values were evaluated to study the effects of binder and process parameters on pigment printing. Acrylate- and butadiene-based binders, and three different colorants, were used for pigment printing on 100% cotton fabrics. Sixty-six pigment printed fabrics were evaluated for washfastness…
A method was developed that was capable of producing a 1000 m length of sputter-deposited magnetic tape using a roll-to-roll in-line sputtering system. This method produced a magnetic recording structure having perpendicular magnetic orientation and uniform grain size, which was observed over the full length of the sp…
The electroplating of Ni–W alloys could represent one of the most promising environmentally friendly alternatives to replace hard chromium. However, the Ni–W process and coatings still show some limitations such as lower hardness than hard chromium and limited corrosion resistance that need to be overcome in order to…
In this study we introduce a preliminary on going work to develop a novel spoke type joint torque sensor of robots by using multi-walled carbon nanotube (MWCNT) strain sensors. We use a nanocomposite solution casting process to fabricate a liquid type strain sensor which can be easily installed on complicate surfaces.…
Equilibrium compositions of chemical vapor deposition progress for silicon carbide (CVD-SiC) coatings with MTS/H2 mixture system were calculated by means of HSC Chemistry5.0 code, and influences of the reaction temperature (T), the system pressure (P) and the composition of raw materials (molar ratio of H2 to SiCH3Cl3…
The paper has investigated sorption of Cr(VI) from aqueous solutions by calcined forms of Zn/Al- and Mg/Fe-hydrotalcites. We have determined the impact of sulfate-, hydrocarbonate- and nitrate-ions on the degree of removal of Cr(VI) from aqueous solutions. The most effective removal of chromate-ions from aqueous solut…
This paper investigated the influence of ammonium polyphosphate (APP) and ammonium polyphosphate modified with 3-(methylacryloxyl) propyltrimethoxy silane (M-APP) on flame retardancy and thermal degradation of pine needles. The presence of M-APP increased the char residue and decreased the pyrolysis temperature of pin…
In this study, we report results of the application of a novel procedure for modeling cation ordering in two synthetic Mg(Al 2-y Fey 3+ )O 4 spinels (y ~ 0.39 and 0.54, samples F39 and F54, respectively). The kinetic profiles suggest a two-stage mechanism, with rapid intersite exchange of Fe 3+ with Mg followed by slo…
Atomically flat thin films of topological semimetal Na 3 Bi are grown on double-layer graphene formed on 6H–SiC(0001) substrates by molecular beam epitaxy. By combined techniques of molecular beam epitaxy, scanning tunneling microscopy and angle resolved photoelectron spectroscopy, the growth conditions for Na 3 Bi th…
In the present work we prepared and characterized several polyurethane (PU) composite foams by combining variable concentrations of nanoclay (montmorillonite, MMT) with metal wires or low cost cellulosic-based reinforcements, with the objective of developing multi-scalar rigid foams for structural applications. The ad…
The influence of phase composition on the anodic behavior of electrolytic zinc-based alloys in alkaline solutions was investigated. The following materials were studied: Zn-Sn alloys consisting solely of Zn and Sn crystallites in a mechanical mixture, Zn-Fe, Zn-Co, and Zn-Ni alloys consisting of both solid solutions a…
A brief survey of results concerning the study of manganites by the method of nuclear magnetic resonance (NMR) is presented. Experiments in which the nuclei of the majority of the elements that enter into the structural formulas of the manganites have been used as the local probes are considered. Primary attention is…
ABSTRACT A novel polymer coating technique has been developed for alleviating thermal stress issues intrinsic to copper-filled through silicon via (TSV) interconnect structures. This scalable generic process applies photoresist and optionally also other functional polymer linings at and within TSV geometries to act as…
Prussian blue analogues (PBAs) such as K2[CuFe(CN)6] are expected to become the key material for efficient cesium recovery. However to use this material efficiently, it must have a morphology that doesn’t cause a severe hydraulic resistance, as a high throughput is required during recovery. This is very difficult, as…
ZnO nanoparticles were synthesized by the electrochemical method. The samples were synthesized at different electrochemical conditions, i.e. time and the voltages. The different topologies were obtained. The photo induced piezoelectricity was studied during illumination by the 10 ns nitrogen laser at wavelength 371 nm…
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