Materials Literature
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For the first time, the efficiency of different surface pretreatment approaches prior to adhesive bonding of a fibreglass-reinforced epoxy vinyl ester thermoset composite has been investigated. It was found that grit-blasting generally had a negligible effect on the surface free energy (SFE) calculated using the Owens…
This article presents a 2D finite element analysis for a 66-kV, three-phase, three-core, cross-linked polyethylene power cable with and without three symmetrically arranged optical fiber sensors. The aim of this simulation is to investigate how the electric and magnetic fields and the eddy-current density distribution…
Abstract Vibrational spectroscopy data were used to gain insight into the possible locations of extra oxygen ions introduced into La 8+ x Sr 2− y (SiO 4 ) 6 O 2+δ compounds to raise their ionic conductivity. Perturbations observed in the Raman and infrared spectra of these compounds with increasing δ were explained by…
As a new simulation method, cellular automata (CA) approach had been used in a number of areas, including electrochemistry and corrosion science research. In this work, a probability CA model was developed to simulate the growth of metastable pits. The simulation imaged the morphology of the pit and calculated the tim…
We present the results of thermal conductivity measurements on bulk nanocrystalline 10 mol% yttria-stabilized zirconia (10 mol%) in the temperature range between 173 and 773 K. The samples studied in this work, with grain sizes from d = 17 nm to d ≈ 1 µm, were obtained by cold compaction and sintering of mechanically…
The effect of hydrodynamic interactions on the spreading of clusters of colloid particles in a quasi-one-dimensional channel is analyzed both experimentally and theoretically. An n-particle cluster spreading diffusion coefficient is defined, in terms of the displacement Deltax(t) in time t, by D(n)[triple bond]<[Sigma…
In the present study the catalytic oxidation of an industrial organic solvent consisting predominantly of C-9 to C-10 paraffins and napthtenics and derived from low aromatic white spirit on CuO and Pt catalysts was investigated at ambient pressure and temperatures between 330 and 770 K. Catalysts were prepared in the…
We report the growth and properties of heterostructure thin films consisting of a thin overlayer of p-NiO 1+ x on Zn 0.95 Ga 0.05 O (GZO) by pulsed laser deposition for transparent electrode applications. The GZO films with a thin p-type NiO 1+ x overlayer exhibited a higher work function. It is envisaged to facilitat…
Abstract Hydrophobic titanium oxide (TiO 2 ) film formed on metallic titanium substrate in hydrogen peroxide solution with a subsequent oxidation under air atmosphere. Component, microstructure, and hydrophobicity of the oxide film were characterized by X‐ray diffraction, scanning electron microscope, and water contac…
We present a novel approach to reverse Monte Carlo (RMC) modeling, SpecSwap-RMC, specifically applicable to structure modeling based on properties that require significant computer time to evaluate. In this approach pre-computed property data from a discrete set of local configurations are used and the configuration s…
Abstract This study investigates thermal aging induced effects on the surface properties of model and commercial automotive catalysts for Natural Gas Vehicles, by means of X‐ray photoelectron spectroscopy and infrared spectroscopy of chemisorbed CO as a probe molecule for noble metals. Post‐combustion catalysts for th…
For equations of generalized Cahn–Hilliard type we present an a posteriori error analysis that is robust with respect to a small interface length scale γ . We propose the solution of a fourth order elliptic eigenvalue problem in each time step to gain a fully computable error bound, which only depends polynomially (of…
Two new homologous series of compounds with a heterocyclic ring having sulfur and oxygen as a hetero atom derived from p-hydroxy acetophenone and alkoxy aniline containing cinnamate-azomethine as central linkages have been synthesized. viz. 4(furalacryloxy) α-methyl benzylidine-4′-alkoxy aniline and 4(thianylacryloxy)…
Abstract The corrosion behavior of Ti–5Ag–xFe alloys (x = 1, 2.5, 5 wt%) in neutral saline solution was investigated by the open‐circuit potential (OCP), potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and potentiostatic tests. The microstructural observation indicated that β‐Ti phase was r…
The synthesis and liquid crystalline properties of new dimers with triphenylene donor (D) core tethered via a flexible spacer to a monofunctionalized anthraquinone acceptor (A) core, D-A, are reported. These dimers have hydroxyl (D-A(OH)) or acetyloxy (D-A(OAc)) functional group. The linear trimers, D-A-D, are also re…
A phospholipid-protein hybrid nanostructure was found to reveal various hydrodynamic diameters dependent on the amount of the drugs incorporated, which could be over 10 times larger than that of the starting nanostructure. This observation was likely related to the thermal stabilization of the nanostructure during inc…
A high efficiency dye-doped cholesteric liquid crystal (CLC) is demonstrated by optimizing the dye concentration and using an electrically tunable nematic liquid crystal (NLC) phase retarder. The state of polarization of laser emission in CLC lasers, contrary to our expectations, due to the refractive index mismatch a…
Abstract Hydroxyapatite (HAp) nanoparticles synthesized via microwave irradiation. Polypyrrole (PPy)/HAp nanocomposite was obtained using electropolymerization on nitinol (Ni) titanium (Ti) substrates. Fourier transform infrared was employed to characterize the nanocomposite formation. Electrochemical properties of th…
In spite of numerous papers dedicated to the subject, the behavior of the helical pitch in the smectic C* phase near the smectic A phase is still controversial. In particular, it is not clear to what extent the measured pitch values are influenced by surface effects. In order to shed light on this problem, careful pit…
We investigate the low-temperature electron, lattice, and spin dynamics of ${\text{LaMnO}}_{3}$ (LMO) and ${\text{La}}_{0.7}{\text{Ca}}_{0.3}{\text{MnO}}_{3}$ (LCMO) by resonant pump-probe reflectance spectroscopy. Probing the high-spin $d\text{\ensuremath{-}}d$ transition as a function of time delay and probe energy,…