Materials Literature
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The band structures and optical properties of AA-stacked multilayer graphenes are calculated by the tight-binding model and gradient approximation. For a nL-layer AA-stacked graphene, there are nL peaks at both low and middle frequencies. The threshold energy of odd-layer graphene is much lower than that of even-layer…
Magnesite growth in chloride and sulfate-rich solutions has been examined at 90 °C in situ using phase-shift interferometry (PSI) and ex situ using atomic force microscopy (AFM) to evaluate the feasibility of cosequestering SO2 and CO2 in Mg-rich rocks. Although sulfate may assist desolvation at the magnesite surface,…
On the basis of thorough analysis of 2D X-ray diffraction patterns from smectic monodomains, we examine the influence of orientational fluctuations on the weakly first-order smectic A (SmA) to smectic C (SmC) transitions in two nonchiral organosiloxane "de Vries"-type liquid crystals. We find that these materials exhi…
: Electron transport properties in an armchair graphene nanoribbon are theoretically investigated by considering the presence of line defect. It is found that the line defect causes the abundant Fano effects and bound state in continuum (BIC) in the electron transport process, which are tightly dependent on the width…
The synthesis of a new type of liquid crystalline compound derived from 1,2,3-triazole was achieved using Wittig reaction. Polarised microscopy studies, X-ray scattering and differential scanning calorimetry analysis revealed that the target compounds exhibit enantiotropic liquid crystalline properties. Their mesomorp…
We use a combination of different scattering techniques and rheology to highlight the link between structure and dynamics of dense aqueous suspensions of soft repulsive colloids in the vicinity of a glass transition. Three different latex formulations with an increasing amount of the hydrophilic component resulting in…
Montmorillonite nanoclay (MMT) and CaCl2-reinforced alginate-based nanocomposite film was prepared by solvent casting method. The combined effect of nanoclay addition and internal cross-linking degree on the mechanical and physical properties of the obtained nanocomposites was evaluated. The MMT concentration was 3% a…
Effects of particle size distribution on physical properties such as viscosity, heat and mechanical properties of injection-molded hydroxyapatite (HA)/poly lactic acid (PLA) were investigated. The melting temperature of PLA was shifted to a lower temperature because of the dispersion of HA particles. However, the cold…
We show that putting an ultra-thin anisotropic metamaterial layer on a plasmonic surface significantly enriches the surface wave (SW) characteristics of the system, which now supports SWs with transverse-magnetic (TM) and transverse-electric (TE) polarizations simultaneously. In addition, the generated SWs exhibit hyb…
In this work the hot-dip galvanising coating ZnAl2Mg2 was tested against the reference material ZnAl0.2 in nonstandardised salt spray test. In those tests the samples were exposed to the sodium salts of sulphate, nitrate, phosphate and acetate. The corrosion products formed on the alloys were analysed with XRD. Additi…
The thermal conductivity of monolayer graphene nanoribbons (GNRs) with different tensile strain is investigated by using a nonequilibrium molecular dynamics method. Significant increasing amplitude of the molecular thermal vibration, molecular potential energy vibration and thermal conductivity vibration of stretching…
We have studied structural, electrical, and optical properties of sputter deposited ternary CdMgO alloy thin films with total Mg concentration as high as 44%. We found that only a fraction (50%–60%) of Mg is incorporated as substitutional Mg contributing to the modification of the electronic structures of the alloys.…
Cerium‐based conversion coatings were deposited on Al 7075‐T6 and characterized to determine the effect of different surface pre‐treatments on the corrosion rate and surface morphology. The methods of potentiodynamic polarization and scanning electron microscopy were employed. The experimental results suggest that cer…
Abstract The second example of the Ce(III)-based single-molecule magnet (SMM), which involves only one 4f electron as a spin carrier, was realized based on similar magnetostructural correlations with Tb(III)-based SMMs. The estimated energy barrier for spin flipping was ΔE/kB = 37(1) K, which is higher than that for t…
Raman studies are reported of vanadium dioxide grown on sapphire substrates with morphology ranging from island to continuous layer. Temperatures corresponding to the onset of the structural phase transition and the insulator to metal transition are estimated based on the shifts and disappearance of the phonons, respe…
The characteristics of the acid-soluble collagen (ASC) from the skin of hammerhead shark (Sphyrna lewini) (ASC-H) were investigated and compared with those of calf skin collagen (CSC). ASC-H with a yield of 4.23 ± 0.54% (based on the wet weight of skins) contained Gly (227 residues/1,000 residues) as the major amino a…
Longitudinal piezoelectric coefficient of a twinned ferroelectric perovskite material with an array of partially compensated head-to-head and tail-to-tail 90-degree domain walls has been studied by phase-field simulations in the framework of the Ginzburg-Landau-Devonshire model of BaTiO${}_{3}$ ferroelectric. In parti…
ABSTRACT Examination of the state of the art shows that over the last three decades, much work has been carried out to formalise specific methods suitable for accurately modelling the transition from the short to long crack regime, the Theory of Critical Distances (TCD) offering a suitable alternative to those methods…
Effect of varying particle size and maximum applied field during initial magnetization (HM) on zero-field cooled (ZFC) exchange bias (EB) in hexagonal YMnO3 nanoparticles prepared by conventional solid state method has been studied. EB phenomenon is observed after ZFC from an unmagnetized state without any remanent ma…
We have grown ∼200 nm thick ZnO films on (0001) sapphire substrates using atomic layer deposition at different substrate temperatures ranging from ∼150 to 350 °C. X-ray diffraction and photoluminescence spectra of these films showed that crystalline and compositional native defects were strongly dependent on the subst…