Materials Literature
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The propagation characteristics of electromagnetic waves at the interface between an isotropic regular medium and an anisotropic metamaterial for arbitrary orientation of principal axis are investigated.In terms of the different sign combinations of the tensor components along principal axes, the anisotropic media are…
Nanoporous MTiO3 (M = Pb, Ba, Sr) array films with unprecedented high structural regularity are fabricated on Ti substrate by hydrothermal treatment of anodic TiO2 film prepared by two-step anodization. The films contain a high density of uniform cylindrical pores that are aligned perpendicular to the Ti substrate. On…
Highly oriented fresnoite glass-ceramics were prepared from a non-stoichiometric melt (Ba2TiSi2O8 + 0.75 SiO2) by electrochemically induced nucleation. By using electron microscopy, cathodoluminescence (CL), electron backscatter diffraction (EBSD) and energy dispersive X-ray (EDX) spectroscopy as well as wavelength di…
The creation of novel engineered multimodal nanoparticles (NPs) is a key focus in bionanotechnology and can lead to deep understanding of biological processes at the molecular level. Here, we present a multi-component system made of gold-coupled core-shell SPIONs, as a new nanoprobe with signal enhancement in surface…
Block copolymers remain one of the most extensively studied and utilized classes of macromolecules due to their extraordinary abilities to (i) self-assemble spontaneously into a wide variety of soft nanostructures and (ii) reduce the interfacial tension between, and thus compatibilize, immiscible polymer pairs. In bil…
The paper reports experimental data concerning the feasibility of structurally defective cerium doped Lu1.8Y0.2SiO5 oxyorthosilicates (Ce:LYSO) as optical stimulated luminescence (OSL) devices with emission at the Ce3+ recombination sites. The total OSL signal was evaluated as a function of continuous irradiation at 5…
A new algorithm is described for the simulation of the organization processes that lead from an isotropic liquid to a crystal structure. The algorithm is based on a hybrid, pseudo-Monte Carlo technique that lets a molecular assembly evolve under Metropolis conditions subject to forcing the decrease of asymmetry parame…
The solution of the inverse problem involving the designation of the boundary condition in the problem of the binary alloy solidification for known temperature measurements at a selected point of the cast is presented. In the discussed model, the temperature distribution is described by means of the Stefan problem wit…
Over the past decade, there has been an increased demand for products manufactured using sustainable materials. Natural fiber composites are seen as an excellent replacement for synthetic fiber composites due to their low density, good mechanical properties (stiffness), good thermal/acoustic insulation properties and…
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Novel TiO2/ZnO core-shell thin film have been synthesized in a PVA matrix via simple, inexpensive and highly reproducible chemical bath deposition technique and were thermally treated under various annealing temperatures up to 673K in order to determine the effects of thermal annealing on the structural and optical pr…
Drilling is a metal removal process and is important for the final fabrication stage prior to application. This paper discussed the influence of parameters on drilling characteristics of natural fibre reinforced composites (NFRC) by Box-Behnken design, analysis of variance (ANOVA) and response surface methodology (RSM…
The transport of charge carriers and the thermal diffusivity were studied on a set of polyaniline (emeraldine) samples that were compressed at various pressures, 50–1000 MPa. Marked correlations between the plots of compression pressure dependence of the electrical resistivity, the thermal diffusivity and the sample d…
The paper reports on covalent clicking of rhodamine-B (RhB) bearing a terminal azide group to alkyne-terminated silica coated superparamagnetic iron oxide nanoparticlesvia the copper(I)-catalyzed Huisgen azide-alkyne 1,3-dipolar cycloaddition (CuAAC) reaction. The course of the reaction was followed the use of powder…
Abstract Summary: Bulk ring opening polymerization (ROP) of L‐lactide (LA) initiated by calcium methoxide (Ca(OMe)2) was investigated in LA/Ca molar ratio from 100 to 5000 and reaction times up to 3h at 180 °C. Ca(OMe)2 showed good activity as ROP catalyst, particularly at high catalyst concentration. The polymerizati…
For an oxide Czochralski crystal growth system, the influence of an active afterheater on the characteristics of the growth process such as temperature and flow fields, crystal-melt interface and the structure of heat transfer have been studied numerically using the finite element method. Several types of heat transfe…
Ferroelectric lanthanum (La)-substituted bismuth titanate (Bi(4-x)La(x)Ti(3)O(12), BLT) nanocrystalline films with the composition range of 0 ≤x≤ 1 have been directly deposited on n-type Si (100) substrates by chemical solution deposition. The La substitution effects on the preferred orientation, surface morphology, p…
A pH-responsive membrane based on polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) block copolymer was developed on a model glass microchip as a promising controlled polymer delivery system. The PS-b-P4VP copolymer assembles into spherical and/or worm-like micelles with styrene block cores and pyridine coronas in selec…
Transparent and conductive films were grafted covalently on glass and ITO substrates with polysilsesquioxane having octithiophene, and their charge transport properties, were studied by electrochemical means. The cyclic voltammogram of oligothiophene fixed in silsesquioxane network was found to be broad because the co…
We propose a simple approach to probe the formation dynamics of honeycomb structures induced by breath figures. A honeycomb film with different domains was obtained by interrupting the condensation of breath figures. The morphologies of different domains indicate that the condensed water droplets grow during their arr…