Materials Literature
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Dielectric, ferroelectric, piezoelectric, and strain properties of lead-free Sn-doped Bi1/2(Na0.82K0.18)1/2TiO3 (BNKT) were investigated. A crossover from a nonergodic relaxor to an ergodic relaxor state at room temperature, accompanied by a giant electric-field-induced strain, was observed at 5 at. % Sn doping. Switc…
A global potential energy surface for the H2 + OH ↔ H2O + H reaction has been constructed using the neural networks method based on ~17,000 ab initio energies calculated at UCCSD(T)-F12a/AVTZ level of theory. Time-dependent wave packet calculations showed that the new potential energy surface is very well converged wi…
Abstract The different exfoliation routes of graphite to produce graphene by sonication in solvent, chemical oxidation and electrochemical oxidation are compared. The exfoliation process and roughening of a flat graphite substrate is directly visualized at the nanoscale by scanning probe and electron microscopy. The e…
Control of interfacial interactions leads to a dramatic change in shape and morphology for particles based on poly(styrene-b-2-vinylpyridine) diblock copolymers. Key to these changes is the addition of Au-based surfactant nanoparticles (SNPs) which are adsorbed at the interface between block copolymer-containing emuls…
In this Comment, we point out that (i) Manca et al. err in their finding that the force law obtained for a single polymer chain in the thermodynamic limit using the Helmholtz ensemble is identical to that obtained using the Gibbs ensemble in all force regimes, and (ii) the perpetuation of this misunderstanding can hav…
We study the fine structure of the phonon $G$ peak in the inelastic light scattering spectra of strained graphene in the presence of a quantizing magnetic field. We show that under the conditions of magnetophonon resonance (MPR), the spectral line shape in Raman spectra of the $\ensuremath{\Gamma}$-point longitudinal…
Laterally aryl-substituted bent-core mesogens, prepared from 2-methyl-isophthalic acid, were studied. Optical polarising microscopy gave hints for nematic and smectic A phases which were supported by X-ray measurements. Two-dimensional patterns of samples aligned in the magnetic field prove clusters of the smectic C t…
ABSTRACT: The toughening of polyamide 6 is desirable for many applications and may be obtained by adding a phase to the elastomeric matrix. However, this leads to a loss in its rigidity characteristics. Therefore, this study aimed at developing blends of polyamide 6/compound by recycled rubber (SBR-R), with the additi…
The exchange bias of [Co/Pt]3/IrMn multilayers deposited on porous anodized alumina oxide template has been investigated. The perpendicular exchange bias has been successfully established on the anodized alumina template and Si substrate. For samples on the anodized alumina templates, a larger exchange field was obtai…
In last decades, many advances have been made in order to aid the medical community. Numerous computational technologies have been developed and improved the efficiency in diagnostic and treatment of many diseases. Many of the technologies were developed with the main goal of aiding in the research of genetic and vira…
The synthesis, structural and chemosensing properties of several lower rim-dansylated calix[4]arenes bearing different methylene bridge substituents are described. Compared to bridge-unsubstituted pendants neither the conformational nor the fluorescence characteristics of the calixarene core are perceptibly influenced…
The nonvanishing magnetic relaxation rate and noticeable resistance in the resistive measurements in high-temperature superconductors (HTSCs) at ultra-low temperatures, which have recently been discussed as evidence of the quantum tunneling of vortices, is argued to be caused by electromagnetic noise in the framework…
This paper refers to determination of magnetic nanoparticles distribution as a function of both magnetic moment µ and energy barrier EB. The original analysis consists in a numerical analysis of experimental M(H) curves determined at two different temperatures and is based on the Stoner–Wohlfarth model. As it was show…
The first systematic theoretical study of the nature of intermolecular bonding of dimethylselenide as donor and IIIA group element halides as acceptors was made with the help of the approach of Quantum Theory of Atoms in Molecules. Density Functional Theory with "old" Sapporo triple-ζ basis sets was used to calculate…
The conformational properties and aggregation behavior of two selectively modified cyclomaltooligosaccharides (cyclodextrins, CDs) containing a double-linked 1,8-dimethylnaphthalene cap-like moiety at the secondary face, namely, 2(I),3(I)-O-(1,8-dimetylnaphthalene-α,α'-diyl)-per-O-Me-α- and -γ-cyclodextrins (NmαCD and…
A model and a measurement technique for the temperature dependent thermal impedance of microbolometer structures are presented. It is demonstrated that especially for automotive applications with an extended ambient temperature regime, a temperature impact on the thermal impedance has to be considered in electrotherma…
Power consumption appears to be the biggest technical issue and performance bottleneck in the development of mobile wearable health monitoring systems. One promising approach for addressing this challenge is to harvest the body heat energy using flexible thermoelectric generators, and printing is a low-cost technique…
Pyrolysis is the thermochemical decomposition of organic matter in the absence of oxygen and produces a wide range of useful products. The word is coined from the Greek-derived elements pyr “πυ´ρ-fire” and lysis “λυ´σις-breakdown/separation” emphasizing the disintegration of matter due to heat. It is a standalone proc…
A new oxyfluorotellurate(IV), indium fluoridopentaoxidotellurate(IV), InTe2O5F, has been synthesized by solid-state reaction and structurally characterized. The crystal structure consists of a three-dimensional framework formed by InO4F2 octahedra and Te2O5 units. The InO4F2 octahedra are linked through the F atoms, w…
A preparation method for hollow particles composed of silica shell containing gadolinium compound (GdC) is proposed. GdC nanoparticles with an average size of 40.5 ± 6.2 nm were prepared with a homogeneous precipitation method at 80°C using 1.0 × 10 −3 M Gd(NO 3 ) 3 and 0.5 M urea in the presence of 2.0 × 10 −4 M ethy…