Materials Literature
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Extraction of reliable bond distances and angles for Ca10(VxP1-xO4)6F2 apatites using standard Rietveld refinement with Cu Kalpha X-ray powder data was significantly impaired by large imprecision for the O-atom coordinates. An initial attempt to apply crystal-chemical Rietveld refinements to the same compounds was par…
Five different glass compositions with equal TeO2 molar concentration and various intermediate constituents were prepared to examine the influence of such intermediate species on the tellurite network. A correlation between the glasses’ structural network and optical properties is presented. Peak Raman gain coefficien…
Polymerizable liquid crystalline semiconductors, referred to as reactive mesogens (RMs), consist of π-conjugated cores with reactive end groups decoupled by an aliphatic spacer. These can be polymerized within the mesophase, maintaining the self-assembled morphology and charge transport characteristics. The polymerize…
Highly (111)- and (200)-oriented cubic BaTiO3 films with dense and hemispherelike morphology have been synthesized on different oriented TiN-coated silicon substrates in barium contained concentrated alkaline solutions at temperatures below 100°C. An unconventional hydrothermal technique combining a hydrothermal metho…
This study reports the low frequency magnetoelectric (ME) response of the sintered composites comprising of a piezoelectric phase Pb(Zr0.52Ti0.48)O3 (PZT) and magnetostrictive phases NiFe1.9Mn0.1O4 (NFM) and Ni0.8Zn0.2Fe2O4 (NZF) with varying ferrite contents of 3, 5, 10, 15, and 20mol%. It was found that the ME coeff…
Experimental investigations on superelastic shape-memory alloys (SMAs) show a dependence of the stress–strain relationship on the loading–unloading rate. This feature is of particular importance when utilizing SMA materials for seismic applications, since the loading rate may affect the structural response. Motivated…
Branched or encapsulating nanostructures with controlled architectures are produced using flow fluctuation in a vapor–liquid–solid process. The flow fluctuation induces catalyst coalescence or division (see figure). The technique is illustrated by the synthesis of iron-encapsulating carbon nanotubes with controlled en…
The title compound is a new mineral consisting of sheets made from edge-sharing Cu(OH)4Cl2 and Mg(OH)6 octahedra. The sheets are only weakly linked by O-H-Cl bridges, giving rise to perfect cleavage along (001) and to strong texture effects in powder diffraction measurements. Owing to low bond-valence sums at the Cl s…
It has been demonstrated that a pseudoelastic TiNi matrix composite exhibits high resistance to wear, which benefits from the combination of a reinforcing phase and a flexible and wear-resistant matrix. The former mainly withstands the wearing force and the latter acts as a binder to retain the reinforcing phase, acco…
The structure of Co2MnSi thin films on GaAs(001) has been characterized by transmission electron microscopy in order to evaluate the feasibility of achieving spin injection into GaAs from such electrodes. The films were dc-magnetron sputtered and varied in thickness between 15 and 260 nm with substrate temperatures du…
Ordered arrays of heterojunctions comprising Ni nanowires, multiwalled carbon nanotubes, and amorphous carbon nanotubes (a-CNTs) connected end to end were fabricated. The current-voltage (I-V) characteristics of the heterojunctions embedded in the arrays were measured by a conductive atomic force microscope. It was fo…
Purpose This paper aims to estimate the corrosion rate of the carbon steel in crude oil using the electrochemical noise (EN) analysis technique. Design/methodology/approach EN measurements and electrochemical impedance (EIS) spectroscopy were employed to study the corrosion behaviour of carbon steel in crude oil and t…
A two-step treatment by argon (Ar) and hydrogen plasma beam scanning was developed to modify the surface bonds of a hydrogenated amorphous carbon (a-C:H) film on indium tin oxide glass. The modified a-C:H film is an excellent layer for liquid crystal alignment, on which the pretilt angle of a nematic liquid crystal (Z…
The second part of this work discusses the fabrication and testing of a fuel-powered shape memory alloy actuator system (FPSMAAS) and its main components. Fuel (propane) is burned in a combustor and its heat is transferred to a working fluid medium, which in turn transfers the heat to the SMA element to drive its mart…
Abstract Raman scattering from BiI 3 and SbI 3 crystals has been studied at hydrostatic pressures up to 2 GPa. The wavenumbers monotonically increased with pressure for all modes in BiI 3 . Although both crystals belong to the same space group, the pressure coefficients of SbI 3 were significantly different from those…
Silica–silver core-shell nanoparticles were produced using colloidal chemistry methods. Surface plasmon resonances in the silver shells were investigated using optical absorption measurements in ultraviolet-to-visible (UV-vis) spectroscopy and the effect of shell thickness on the wavelength of the resonance was noted.…
The title compound was synthesized in the form of a powder, and was studied by elemental analysis, IR spectroscopy, thermogravimetry and mass spectroscopy. Its crystal structure was then determined by X-ray powder diffractometry, using X-ray diffraction data collected in the reflection Bragg-Brentano geometry. The met…
Purpose This paper aims to study the dimensional characteristics such as fabric density variations, dimensional constant parameters, linear and area dimensional changes and spirality angle variations of 1 × 1 rib knitted structures made from cotton‐spandex core spun yarns, under laundering regimes till 10th washing cy…
The thermo-emf ΔV and thermoelectric current ΔI generated by imposing the temperature gradient (TG) alternating at a period of T on a thermoelectric (TE) generator were measured as a function of t, where t is the lapsed time and T was varied from 8s to ∞. The alternating TG was produced by switching a voltage of 2.6V…
Emission properties of an erbium organic complex embedded in a polymer matrix are investigated for laser and optical amplification applications in the 1550nm telecommunication range. The evaluation of stimulated emission cross sections is inferred from the Judd-Ofelt model [B. R. Judd et al., Phys. Rev. 169, 130 (1968…