Materials Literature
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A versatile, infrared-heated, chemical reaction cell has been assembled and commissioned for the in situ study of a range of chemical syntheses using time-resolved energy-dispersive X-ray diffraction (EDXRD) on Beamline I12 at the Diamond Light Source. Specialized reactor configurations have been constructed to enable…
The spontaneous reaction between microrods of an organic semiconductor molecule, copper 7,7,8,8-tetracyanoquinodimethane (CuTCNQ) with [AuBr(4)](-) ions in an aqueous environment is reported. The reaction is found to be redox in nature which proceeds via a complex galvanic replacement mechanism, wherein the surface of…
Fe 2+ - and Mn 2+ -rich tourmalines were used to test whether Fe 2+ and Mn 2+ substitute on the Z site of tourmaline to a detectable degree. Fe-rich tourmaline from a pegmatite from Lower Austria was characterized by crystal-structure refinement, chemical analyses, and Mössbauer and optical spectroscopy. The sample ha…
Safety and toxic effects of nanoparticles are still largely unexplored due to the multiple aspects that influence their behaviour toward biological systems. Here, we focus the attention on 12 nm spherical gold nanoparticle coated or not with hyaluronic acid compared to its precursor counterpart salt. Results ranging f…
Corrosion inhibition of C38 steel in 1 M HCl was investigated in the absence and presence of different concentrations of two imidazo derivatives namely, 2-phenylimidazo[1,2-a]pyridine (P1) and 2-(m-methoxyphenyl) imidazo[1,2-a]pyrimidine (P5). Weight loss, potentiodynamic polarization and electrochemical impedance spe…
This paper presents a simple and effective approach to recognize ultra-high-frequency (UHF) signals of partial discharges (PDs). Six artificial insulation defect models were designed to generate UHF PD signals, which were detected by a Hilbert fractal antenna in a series of experiments. Wavelet packet (WP) decompositi…
The amplitude of the acoustic pressure required to nucleate a gas or vapor bubble in a fluid, and to have that bubble undergo an inertial collapse, is termed the inertial cavitation threshold. The magnitude of the inertial cavitation threshold is typically limited by mechanisms other than homogeneous nucleation such t…
In most metal matrix composites (MMCs) interfaces are decisive but hard to manipulate. Especially copper-carbon composites can exhibit excellent mechanical and thermal properties only if the Cu/C interface is modified by an optimised interlayer. Due to the excellent thermal conductivity and mechanical stability of dia…
Vanadium dioxide (VO2) films were deposited on high-purity Si, sapphire, and SiO2 substrates by an organic sol-gel method. The effect of the substrate on the structure, morphology, and phase transition properties of the VO2 films was demonstrated. We proposed that the film-substrate interaction induced the differences…
This work focused on the preparation, characterization and conductivity studies of copper sulphide nanoparticle incorporated polypyrrole (PPy)/polyvinyl alcohol (PVA) blend by in situ chemical oxidative polymerization. The blend nanocomposites were examined by FTIR, SEM, XRD, TGA and electrical studies. The complexati…
The structural development and morphology in unvulcanized and vulcanized (both pre- and postvulcanized) natural rubber latex were studied in a relaxed state and under deformation by multiple-quantum (MQ) NMR and in situ wide-angle X-ray diffraction (WAXD), respectively. Vulcanization was carried out using both sulfur…
In order to develop the eco-friendly Zn-rich coatings with higher corrosion resistance and lower pigment contents, several series of coatings were designed and manufactured employing lamellar Zn (Al) pigments mixed with silicone-acrylate emulsion modified inorganic silicate vehicle, and then were evaluated by conventi…
Abstract Polyaniline (PANI) films were polymerized on glass carbon (GC) electrodes with small molecular dopantshydrochloric, perchloric, sulfuric, methanesulfonic, benzenesulfonic, ρ‐ toluenesulfonic and large macromolecular size poly(4‐styrenesulfonic (PSS)), poly(vinylsulfonic), poly(acrylic), and poly(anilinesulfon…
BACKGROUND AND METHODS: Problems with the clinical management of prostate cancer include the lack of both specific detection and efficient therapeutic intervention. We report the encapsulation of superparamagnetic iron platinum nanoparticles (SIPPs) and paclitaxel in a mixture of polyethyleneglycolated, fluorescent, a…
Polymer nanocomposites are increasingly used in applications that are subjected to harsh environments. Owing to polymer's susceptibility to photodegradation, nanofillers in a polymer nanocomposite may be released into the environments during the composite's life cycle. Such release potentially poses an environmental h…
Metal injection moulding (MIM) attracts growing interest as an economic net-shape manufacturing technique for the processing of titanium and titanium alloys. Even for titanium-aluminides, intended for high-temperature applications, MIM is seen as a reasonable technique to overcome processing problems with conventional…
Six salts of mononuclear manganese(III) complexes with Schiff-base ligands L3–L5 are reported. Solvated complexes with L3, [MnL3]ClO4·0.5MeOH, 3a, and [MnL3]NO3·EtOH, 3b, are low spin (LS) at 80 K and exhibit a gradual and incomplete spin crossover (SCO) on warming to 281 K. Complexes with L4, [MnL4]ClO4, 4a, and [MnL…
Soy protein-based bionanocomposites were prepared via solution intercalation with incorporation of the organoclay of different concentrations. The composites were characterized through UV-Visible and Fourier Transform Infrared (FTIR) spectroscopy, X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). The…
We consider the spreading of a thin two-dimensional droplet on a planar substrate as a prototype system to compare the contemporary model for contact line motion based on interface formation of Shikhmurzaev [Int. J. Multiphase Flow 19, 589–610 (1993)]10.1016/0301-9322(93)90090-H, to the more commonly used continuum fl…
We present a first-principles computational study of the interactions between the boron (B) and nitrogen (N) dopant atoms in graphene. Our calculations are carried out using density functional theory combined with the generalized gradient approximation for the exchange-correlation functional. The total energies, equil…