Materials Literature
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Abstract New synthetic strategies for thiophene‐nickel(II)porphyrin hybrid molecules are described. Three principles—linear direct, linear spacer and lateral spacer connectivities—were realised and compared with respect to their electrochemical behaviour. Computational investigations by DFT methods confirm experimenta…
A new 3-D supramolecular compound based on a Keggin polyoxometalate and lanthanide (Ln) coordination cations [Ce(H2O)3L3]2[HSiMo12O40]2[L] ⋅ 7H2O (1) (L = isonicotinic acid) has been synthesized and characterized by routine methods. Compound 1 has a water chain with trimeric and hexameric water clusters trapped in the…
We report an intraparticle surface plasmon coupling in Au nanorod structures consisting of half smooth and half nanoporous surface morphology; the relative ratio and the diameter difference between each block were important in determining the overall optical properties of such nanostructures.
Present investigation is aimed at developing duplex stainless steels through powder metallurgy route and study the effect of sintering atmospheres on density, mechanical properties and microstructures. Duplex stainless steel composition was prepared from the mixture of 316L and 430L alloyed powders. The powders were m…
Using microscopic and macroscopic studies we have derived a comprehensive picture of the relation between the conduction routes and the transport mechanisms in the $\ensuremath{\mu}c\text{-S}:\text{H}/a\text{-Si}:\text{H}$ composite system. In particular, we have established that in this system the increase of the fra…
Manufactured carbon/epoxy composite surfaces were analysed before and after CF4 plasma treatment in order to study their wettability with the aim to master adhesion properties. Roughness and XPS surface composition on raw and plasma treated surfaces have been correlated to surface free energy measurements. The analyti…
Abstract The ability of Tinuvin 622, a Hindered Amine Stabilizer (HAS), in decreasing of radiation damage to commercial PMMA matrix used in manufacturing of medical supplies was examined. Effects of gamma irradiation in PMMA specimens irradiated at dose range of 10–60 kGy were assessed by comparison of the variation o…
Abstract Composites of poly(3‐hydroxybutyrate)‐ co ‐poly(3‐hydroxyvalerate) (PHBHV) with 6% of 3‐hydroxyvalerate (HV) and natural rubber (NR) were prepared by a solvent‐casting method. Different approaches were tested for the composite preparation. Both PHBHV and NR were dissolved in chloroform, followed by its evapor…
Abstract A stannate chemical conversion process followed by an activation procedure was employed as the pre‐treatment process for AZ91D magnesium alloy substrate. Zn was electroplated onto the pre‐treated AZ91D magnesium alloy surface from pyrophosphate bath to improve the corrosion resistance and the solderability. T…
Electronic and magnetic dynamics at a single interface of antiferromagnetic manganites, ${\text{LaMnO}}_{3}/{\text{SrMnO}}_{3}$, were studied with time-resolved second-harmonic generation and time-resolved nonlinear magneto-optical Kerr effect. The temporal evolution of the respective signals shows clear differences;…
Abstract Triphenylamine‐based oligomers and polymers with linear, hyperbranched, star‐shaped or dendrimer architectures have been synthesized and studied due to their interesting electro‐optical properties. In many cases insoluble materials are obtained. In this study, we report the synthesis of grafted polytriphenyla…
Reactions between the [M(III)(CN)(6)](3-) (M = Fe and Co) anions and the mononuclear complex [Co(II)(dppe)(2)(H(2)O)][BF(4)](2) result in the formation of two isostructural trinuclear clusters {[Co(II)(dppe)(2)](2)[M(III)(CN)(6)]}(BF(4)). Surprisingly, reactions of [Co(dppe)(2)(H(2)O)](BF(4))(2) and [Co(triphos)(CH(3)…
Using computer simulation, alternative methods of the interaction of highly charged ions ${\text{Ar}}^{q+}$ with metals (Au, Ag) are used and verified in the present work. Based on the classical over-barrier model, we discussed the promotion loss and peeling off processes. The simulated total potential electron yields…
Abstract Nanocomposites of poly(vinyl chloride), metallic oxides (copper, molybdenum, and zinc), and organically modified montmorillonite (O‐MMT) were prepared in a melt‐blending or intercalation‐in‐the‐molten state process, and their morphology was assessed with X‐ray diffraction and transmission electron microscopy.…
An intriguing evolution from a simple internal helix to a hierarchical helical (HH) mesostructure with both internal and external helices or a complicated screwlike and concentric circular (CC) mesostructure is successfully observed. The complicated helical structures are determined by TEM studies and 3D electron tomo…
Ion-beam assisted deposition (IBAD) is one of the major techniques for preparing highly textured templates for YBa 2 Cu 3 O 7− x (YBCO) coated conductors. In most applications so far IBAD-MgO has been used. TiN is an alternative material for the IBAD process showing a textured nucleation similar to MgO. Different amor…
Abstract The corrosion inhibition behavior of benzotriazole (BTA) on copper in 17 wt% tetra‐ n ‐butylammonium bromide (TBAB) aerated aqueous solution was investigated by weight‐loss tests, potentiodynamic polarization, electrochemical impedance spectroscopy, and scanning electron microscopy/energy dispersive X‐ray spe…
Jute fabrics (hessian cloth) reinforced polypropylene (PP) matrix composites (30% fiber by weight) were fabricated by compression molding. Tensile strength (TS), tensile modulus (TM), and percentage elongation at break (Eb) of the composites were found to be 32 MPa, 740 MPa, and 16%, respectively. Then jute fabrics re…
It is illustrated here by ab initio calculations based on density functional theory and other high level methods that the high stability of the icosahedral Sn(12) (2-) dianion known as stannaspherene, reflects stability toward ionization rather than cohesion. This could be also connected with novel fluxional rearrange…
In fires, polymeric materials are consumed by flaming combustion which is a gas phase process. Thus the polymer must degrade to yield volatile combustible species to fuel the conflagration. To begin, this chapter first considers the various processes by which pure polymer systems degrade. Then any influence by which t…