Materials Literature
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Effects of elastic coupling between a ferroelectric thick film and a supporting substrate or underlayer with finite thickness on the apparent longitudinal piezoelectric coefficients are analysed in this work. General analytical solutions of the effective d33 converse piezoelectric coefficients of a film–substrate coup…
Abstract A facile soft‐template method to synthesize Pd hollow nanospheres (PHNs) through a one‐pot route in the presence of rhodamine B (RB) at room temperature is demonstrated. RB‐PdCl42− complex formed by an electrostatic interaction is used as sacrificial template, which can self‐degrade to synthesize metal hollow…
Algae and cyanobacteria are capable living under harsh conditions in the natural environments and can develop peculiar survival processes. In order to evaluate radiation shielding properties of green algae; Chlorella vulgaris, Scenedesmus obliquus, and cyanobacteria; Synechococcus sp., Planktothrix limnetica, Microcys…
Current-activated tip-based sintering (CATS) is a novel process where spark plasma sintering conditions are applied through an electrically conducting tip on a locally controlled area on a green powder compact/bed. The localization of electric current in CATS allows for unique temporal and spatial current and temperat…
In order to optimise heat treatment condition for improving the stability of microstructure and properties of 5A06 alloy sheet, annealing treatment of the sheet was conducted in the temperature range of 175–380°C for 1 h. The microstructure and tensile properties of the sheets were evaluated. The results show that the…
Vertical aligned silicon nanowires were synthesized using chemical etching of silicon wafer. Influence of a silicon nitride layer on the top of the silicon nanowires solar cell has been investigated. The optical properties of a Si NWs array with and without silicon nitride passivation layer are examined in terms of op…
Molecular dynamics simulations have been conducted to study structural changes of Cu clusters during quenching processes. It is shown that quenching temperature greatly affects atom motions and structural formation of these clusters. Simulation results establish the following pathway of the structural changes by using…
The possibilities of applications of vibrational spectroscopy techniques (Raman spectroscopy) in the analysis and characterization of polymers are more and more used and accurate. In this paper, our purpose is to characterize Low Density Poly(Ethylene) (LDPE) grades by Raman spectroscopy and in particular with CH 2 Ra…
A new method for calculating exciton wavefunctions in the presence of a long-range electron–hole (e–h) exchange interaction (EXI) is presented. The e–h EXI arises, for example, for cross-polarized excitons in a single-walled carbon nanotube (SWNT). Cross-polarized excitons have previously been calculated as an eigenva…
We have found that torsion mechanical stresses induce the optical rotation effect in centrosymmetric NaBi(MoO4)2 crystals. We have suggested a description of the effect on the basis of nonlocal linear elasticity theory. It has been shown that the induced optical gyration is proportional to the stress gradient appearin…
Magnetic excitations in CuCrO$_{2}$, CuCr$_{0.97}$Mg$_{0.03}$O$_{2}$, Cu$_{0.85}$Ag$_{0.15}$CrO$_{2}$, and CuCr$_{0.85}$Al$_{0.15}$O$_{2}$ have been studied by powder inelastic neutron scattering to elucidate the element substitution effects on the spin dynamics in the Heisenberg triangular-lattice antiferromagnet CuC…
Two homologous series of quinoline-containing liquid crystalline compounds were synthesised. Synthesis of these compounds was completed using a short two-step reaction. Fair to good overall two-step yields of 72–79% and 36–50% were obtained for the liquid crystalline compounds of 2-(4-alkoxyphenyl)-6-methoxyquinolines…
We propose and demonstrate a selective lateral electrochemical etching using a superlattice as the etch-sacrificial layer. Differing from the previous methods that require a special etch-sacrificial layer and therefore deteriorate the epilayer grown atop, our method simplifies the epi-growth without compromising the e…
In this paper, we have presented a MEMS-based piezoelectric fluid-flow based micro energy harvester. The design and modelling of the energy harvester structure was based on a piezoelectric cantilever affixed to a bluff-body. In a cross fluid flow, pressure in the flow channel, in the wake of the bluff body, fluctuates…
Polypyrrole (PPy), one of the most extensively investigated conducting polymers, has attracted a great deal of interest because of its good electrical conductivity, environmental stability, and easy synthesis. PPy films were produced by polymerization of pyrrole and tosylate (TsO−) as dopants in the presence of oxidan…
The crystal structure and electronic properties of the triclinic LixVOPO4 insertion electrode system with \(0.9\leq x \leq 1\) are explored through measurements of x-ray four-circle diffraction, magnetization, and electron paramagnetic resonance. For \(x = 0.95\) at 295 K, the one-dimensional corner-sharing chain of d…
Electrochemical deposition of Au/Ni multilayered nanowires using template-assisted growth technique from electrolyte containing nickel chloride and gold solution was studied in details. 60 μm-thick anodized aluminum oxide (AAO) with pore diameter of 200 nm was used as the template. Chronopotentiometry experiments were…
Antimicrobial (AM) packaging incorporated with pH indicator is a promising form of smart food packaging with great potential; economically, environmentally and increase biosafety of packed food. An AM Smart Packaging is made by incorporating suitable AM agents into food package matrices and applying a bio switch conce…
Twin-bowl-shaped tris(spiroorthocarbonate) cyclophanes were designed and prepared as ditopic hosts for electrically neutral or electron-rich guests. Preparation of the desired cyclophanes was achieved by cyclotrimerization of 2,2',3,3'-tetrahydroxy-1,1'-binaphthyl (THB) via the transesterification of tetraphenyl ortho…
Abstract The optical, chemical, and catalytic properties of metallic nanoparticles (NPs) depend strongly on their particle size and shape. Therefore, the preparation of monodisperse metallic NPs is very important for fundamental studies and practical applications. However, the isolation of the different structures by…