Materials Literature
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Abstract Layered metal-dielectric metamaterials have filtering properties both in the frequency domain and in the spatial frequency domain. Engineering their spatial filtering response is a way of designing structures with specific diffraction properties for such applications as sub-diffraction imaging, supercollimati…
Fe 3 O 4 –ZnWO 4 composite microspheres with magnetically recyclable photocatalytic performance have been firstly synthesised by a simple refluxing method under mild conditions. The as‐prepared Fe 3 O 4 –ZnWO 4 composites show good photocatalytic efficiency in degradation of rhodamine B under UV light irradiation and…
Impedance spectroscopy of many ceramics is a challenge due to their high electrical resistance. Small disturbances can significantly alter the measuring results. In the present paper, it is shown how impedance measurements can be performed in an electromagnetically noisy ac furnace, using consequent Faraday shielding…
Cubic shaped YBO3:Tb3+ green phosphor was synthesized by precipitation from homogeneous solution. Prepared precipitates were identified as Y[B(OH)4](CO3) by X-ray diffraction, and cubic shaped particles of about 2 µm were observed by a scanning electron microscope. By heating at 800°C, the cubic shape of the particles…
The temperatures of the phase transition in a thin ferroelastic film and ferroelastic rod with a square profile were calculated on the base of Landau thermodynamic theory with account of different contact theirs planes with environment at the external mechanical stress, variation chemical composition along a thickness…
Cr(III)–Sn(IV) doped indium oxide was prepared from a polyvinyl alcohol (PVA) based composite foam material by sol–gel processing. The composite foam, initially prepared at ∼100 °C, was further baked at three different temperatures (400 °C, 600 °C and 800 °C) to generate a porous oxide material with different morpholo…
A setup for measuring the refractive indices of transparent solid samples of optical ceramics using shifts of a beam by a plane-parallel plate in a wavelength range of 400–1200 nm was developed. The minimum cross-sectional sizes of the investigated objects are 5–12 mm, and their thicknesses are 0.3–1.0 mm. A standard…
Nanofluids are fluids engineered by dispersing nanometre size structure in a base fluid in colloidal state. The paper discusses the possibility of application of nanofluid as cutting fluid during machining and the associated challenges. It was pointed out by several researchers that substitution of conventional coolan…
Lithium cobalt oxide coatings on 304 stainless steel substrates have been carried out by using cathodic electrochemical synthesis in LiNO 3 and Co(NO 3 ) 2 aqueous solution and subsequent annealing for thin film lithium-ion batteries. The as-deposited film is composed of the mixture of Co(OH) 2 ·H 2 O and LiOH, conden…
This study utilizes radio frequency magnetron sputtering (RF sputtering) to deposit GZO transparent conductive film and Ti thin film on the same corning glass substrate and then treats GZO/Ti thin film with rapid thermal annealing. The annealing temperatures are 300°C , 500°C, and 550°C, respectively. Ti:GZO transpare…
Polypyrrole (PPy) nanotubes were suggested as functional adsorbents for the electrochemically controlled solid-phase extraction (EC-SPE) of both anions and cations. The preparation of the PPy nanotubes on ITO glass was achieved by using a constant potential method. In situ anion (chloride, nitrate, and sulfate) and ca…
The synthesis of amphipolar graft copolymers by reactive extrusion of maleic anhydride modified polypropylene or poly(propylene-co-ethylene) and α, ω-dihydroxy-poly(ethylene oxide) or α-hydro-ω-oxymethyl-poly(oxyethylene) was studied. The graft copolymers were characterized by Fourier transform infrared spectroscopy.…
We study the effect of anisotropy and disorder on the morphology of precursor microstructures within a Ginzburg-Landau free energy framework. In addition, with increasing disorder at low anisotropy we find a crossover from a twinned state to a non-transforming frozen state. Results are compared with available experime…
Lightweight materials have been in focus in recent times for their use in automobiles, planes and protective structures for numerous benefits ranging from reduction in fuel consumption and increased payload in vehicles to lighter and stronger protective structures. For efficient use of materials in applications where…
Nanoparticle ensembles in Co-Pt and Fe-Pt systems embedded in a carbon matrix are prepared by a plasma-arc method. Two-phase samples based on disordered FCC solid solutions are prepared in both systems. In the Co-Pt system, the solid solujtions are mixed within one ensemble; in the Fe-Pt system, they are spatially sep…
A method is developed for crazing-based production of mechanically strong hybrid polypropylene film composites containing amorphous titanium dioxide nanophase (up to ∼30 wt %). As a whole, the morphology of the composite represents an interpenetrating network in which the inorganic component (TiO2) is distributed in t…
Compared with amphiphilic hyperbranched polymers (HBPs), the self-assembly of hydrophilic HBPs remains a challenging area. In this article, we report the self-assembly of an amido-ended, hydrophilic hyperbranched polyester (HTDA-2), by taking advantage of the induction effect of the platinum ion. Self-assembled HTDA-2…
In this paper, a simple procedure to design a blast resistant wheel is presented. Finite element analysis is employed to provide preliminary evaluations on the blast resistance of the wheel; the issues of such work are analyzed and the results are shown in order to prove the validity of the proposed procedure. The ana…
We report a systematic strategy for theoretically characterizing the interface-level microstructure evolution during in situ internal oxidation of the metal-oxide composite Cu–Al2O3. First, the interface phase stability diagram and phase diagram are constructed from first principles based on thermodynamics calculation…
In this work, a series of novel shape memory liquid crystalline (LC) epoxides with lateral substituent were prepared and characterized. Dynamic mechanical analysis (DMA) and shape memory testing were used to investigate on the thermo-mechanical properties and shape memory effects of prepared samples. The results showe…