Materials Literature
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The automotive industry is currently seeking detailed information about various types of materials and their behavior under dynamic loading. Dynamic tensile testing of sheet steels is growing in importance. The experimental dynamic tensile technique depends on the strain rate. Each type oftest serves for a specific ra…
We present the nonpolarizing resonance properties of two types of one-dimensional (1D) guided-mode resonance (GMR) gratings consisting of the sinusoidal-profile grating substrate and the conformal dielectric thin films. The optimization with respect to the grating height and the phase of the conformal graded-index lay…
In this study, the polyimide (PI) alignment film whose surface contained fluorinated side chain was prepared by a new method. The fluorine compound, hexafluorobutyl acrylate (HFBA), was grafted into the surface of main-chained PI film as side chain via electron beam irradiation. The pretilt angle of liquid crystal (LC…
Switching speeds of nematic liquid crystal (LC) cells in the sub-millisecond range are observed for 3-D patterned self assembled monolayers (SAMs) on indium-tin-oxide (ITO) substrates. To achieve such fast LC response and relaxation times, thermal treatments of the patterned SAM-on-ITO are required, increasing the rel…
Purpose The purpose of this paper is to prepare and optimize the preparation conditions of some new hydrogels and in addition, evaluate their water absorbance at different mediums and their ability to remove ions from aqueous solutions. Design/methodology/approach Cellulose was extracted from depithed bagasse at two d…
Ab initio molecular dynamics simulations on liquid Sb have been carried out at five different temperatures from 913 K to 1193 K. We have investigated the temperature dependence of structure properties including structural factor S(Q), pair correlation function g(r), bond-angle distribution function g 3 (θ), cluster pr…
The flexural properties of poly-L-lactide (PLLA) and polycaprolactone (PCL) shape memory composites filled with nanometer calcium carbonate (nano-CaCO3) were determined at room temperature. The results showed that with the increase of the nano-CaCO3 weight fraction the flexural moduli and strength of PCL/nano-CaCO3 co…
This work is devoted to the decomposition of gaseous HCN by oxidation with air catalyzed by different nickel containing catalysts. The presence of metallic nickel does not cause the decomposition of cyanide at 400 °C, but NiO, electrochemical prepared nickel oxides Ni 2 O 3 · x H 2 O and (β,γ)-NiOOH exhibit distinctly…
When the molybdenum oxo(peroxo) acetylide complex [CpMo(O-O)(O)C≡CPh] is used as a catalyst for the oxidation of olefins, completely different product selectivity is obtained depending on the oxidant employed. When tert-butyl hydroperoxide (TBHP, 5.5 M) in dodecane is used as the oxidant for the oxidation of cyclohexe…
Two new symmetrical oxadiazole-based bent-core mesogens bearing cis and trans geometrical stereoisomer tails, geranyloxy and neryloxy, have been synthesised and the effect of the cis–trans geometric configuration of the terminal chains on the thermal profile and mesomorphic behaviour were investigated using differenti…
Abstract The one‐pot reaction of nickel(II) perchlorate salt with NaN 3 and the Schiff base ligand, 3‐(2‐hydroxybenzylideneamino) propane‐1, 2‐diol (H 3 L), derived from the condensation of 2‐hydroxybenzaldehyde and 3‐aminopropane‐1, 2‐diol, yields [Ni 4 (HL) 2 (H 2 L) 2 (N 3 ) 2 ] · CH 3 CN ( 1 ). Single crystal X‐ra…
Purpose – The purpose of this paper is to evaluate the water vapour permeability and mechanical properties of a solventless epoxy – nano‐platelet nano‐composite system compatibilised with an amino‐silane.
A new way of generating large plastic strain in a billet by splitting it plastically by a reciprocating punch is investigated. The concept of incremental angular splitting (I-AS) is explained by referring to the severe plastic deformation process of incremental equal channel angular pressing (I-ECAP). Results of labor…
Using X-ray absorption spectroscopy and electron energy loss spectroscopy with atomic-scale spatial resolution, experimental evidence for charge transfer at the interface between the Mott insulators Sm2 CuO4 and LaFeO3 is obtained. As a consequence of the charge transfer, the Sm2 CuO4 is doped with electrons and thus…
The fluorescent behavior in the solid state of a naphthyridine-based donor–acceptor heterocycle is presented. Synthesized as a crystalline blue-emissive solid ( Pbca ), the compound can easily be transformed in its P 2 1 / c polymorphic form by heating. The latter material shows blue to cyan emission switching trigger…
Polycrystalline thin-film libraries of Bi2O3-TiO2-Na2O system have been synthesised over a wide composition region using elemental molecular beam epitaxy sources combined with an oxygen plasma source. Structural characterisation and the screening of both dielectric and ferroelectric properties of fabricated compounds…
The lifetime distribution of stress-induced voiding with area scaling is investigated on a void nucleation and growth framework. The distribution resulting from the convolution integrals of the time to void nucleation and the time for void growth was applied to observed data. The time to void nucleation showed non-Poi…
The link between atomistic quantities and continuum fields has been the subject of research for at least half a century. Nevertheless, there are still many open questions and misleading discussions in the literature. Therefore, based on the fundamental principles of classical mechanics and statistical physics we const…
In the present paper, a novel method to fabricate ordered arrays of Au/NiO/Au nanowires is described, with the aim of filling the gap between the fundamental study of the electrical properties of scattered single nanowires and the engineered fabrication of nanowire arrays. This approach mainly consists of the followin…
The evolution of the structural and optical properties of a silicon core in oxidized nanowalls is investigated as a function of oxidation time. The same individual nanostructures are characterized after every oxidation step in a scanning electron microscope and by low-temperature photoluminescence, while a representat…