Materials Literature
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An isochorismate-pyruvate lyase with adventitious chorismate mutase activity from Pseudomonas aerugionsa (PchB) achieves catalysis of both pericyclic reactions in part by the stabilization of reactive conformations and in part by electrostatic transition-state stabilization. When the active site loop Lys42 is mutated…
There has been tremendous recent progress in realizing topological insulator initiated by the proposal of Kane and Mele for the graphene system. They have suggested that the odd ${Z}_{2}$ index for the graphene manifests the spin-filtered edge states for the graphene nanoribbons, which lead to the quantum spin Hall ef…
Eutectic materials have potential as photoactive materials, due to their multiphase character (various available photoactive component phases and multiple band gap energies) and high crystallinity. However, larger material samples are needed to demonstrate it. In order to overcome this limitation, the growth of a plat…
Carbon-encapsulated iron nanoparticles were synthesized by pyrolysis at 1000 °C of two solid precursors: poly(vinyl alcohol) and iron citrate. The weight ratio between the precursors controlled the reaction yield, crystallinity, morphological features and magnetic properties of the products. The encapsulation yield of…
The upper critical field was measured up to 12 T for three BaFe${}_{2\ensuremath{-}\mathrm{x}}$Co${}_{\mathrm{x}}$As${}_{2}$ single crystals with estimated Co concentrations of $x$ $=$ 0.082, $x$ $=$ 0.117, and $x$ $=$ 0.143. ${H}_{\mathrm{C}2}$ versus temperature was measured from temperature-dependent resistivity fo…
The numerical analysis of a new model of metal crystallization is performed. The novelty of the model, which has recently appeared in publications, consists in modeling that is simultaneously carried out at several scale levels, from micro-to macroscales. Although experimental studies of metal crystallization revealed…
Abstract Metal matrix composites have been produced by conventional infiltration of ceramic preforms. The magnesia partially stabilised ceramic foams were prepared by replication method. In terms of the present paper the second process step that comprises the cold spraying of the impregnated foam is optimised. The spr…
We compute the dynamical polarization function for a graphene antidot lattice in the random-phase approximation. The computed polarization functions display a much more complicated structure than what is found for pristine graphene (even when evaluated beyond the Dirac-cone approximation); this reflects the miniband s…
Large-scale Monte Carlo simulations are presented for a coarse-grained model of cylindrical molecular brushes adsorbed on a flat structureless substrate, varying both the chain length N of the side chains and the backbone chain length N(b). For the case of good solvent conditions, both the cases of weak adsorption (on…
Single crystals of K 2 Ca 3 Si 3 O 10 have been obtained in a multi-anvil high-pressure synthesis experiment performed at 10 GPa and 1000 °C. The compound adopts the monoclinic space group C 2/ c with four formula units per cell and the following lattice parameters (at 25 °C): a = 10.3539(19) A, b = 10.6013(16) A, c =…
Mineralized biological materials such as bone, sea sponges or diatoms provide load-bearing and armor functions and universally feature structural hierarchies from nano to macro. Here we report a systematic investigation of the effect of hierarchical structures on toughness and defect-tolerance based on a single and me…
Helical organosilica materials were synthesized for the first time using a novel binaphthyl-based chiral co-monomer in less than 1 hour. The incorporation of a chiral co-monomer in the wall was shown to influence the curvature of the helical materials. As the amount of the chiral co-monomer was increased, the degree o…
Solar cell is device that directly converts the energy of solar radiation to electrical energy. So it is important for solar cell to reduce the surface reflection of light in order to improve the efficiency of the device. Texturing and antireflection coating have been used to reduce the reflection of light. Texturing…
Single-wall carbon nanotubes (SWCNTs) have been proposed for very large scale integration interconnect applications and their modeling is carried out using the multiconductor transmission line (MTL) formulation. Their time-domain analysis has some simulation issues related to the high number of SWCNTs within each bund…
Abstract Polyethylene (PE) nanocomposites were produced through in situ polymerization using bis( n ‐butylcyclopentadienyl) zirconium dichloride ( n BuCp) 2 ZrCl 2 supported on silica nanospheres (SN) with diameters of 80–100 nm synthesized by the sol–gel method. The metallocene catalyst was either supported directly…
Thin-film perovskite cobaltites have been found to exhibit coercivity values enhanced by almost 2 orders of magnitude in comparison to bulk. In this paper, we have investigated this unexplained coercivity enhancement in detail, focusing on epitaxial SrTiO${}_{3}$(001)/Nd${}_{0.5}$Sr${}_{0.5}$CoO${}_{3}$ [SrTiO${}_{3}=…
Abstract The effect of various experimental conditions (i.e., hydrogen charging current density, charging time, solution concentration, and temperature) on the embrittlement and cracking susceptibility of 2205 duplex stainless steel was studied by electrochemical hydrogen charging and slow strain rate tests. The resul…
Nanocrystalline porous CaSiO 3 ceramic powders have been synthesized by a novel low-temperature initiated self-propagating, gas-producing solution combustion method. Single phase β -CaSiO 3 (Wollastonite) is formed by calcination at 900°C for 3 h. The crystallization and phase formation temperatures in this method are…
Indomethacin is a non-steroidal anti-inflammatory drug (NSAID).It is practically insoluble in water, which precludes its use in aqueous solution formulations. The effect of arginine on the solubility of indomethacin was investigated in this study. The solubility enhancement of indomethacin by the arginine was observed…
The synthesis, structure, and magnetic properties of a ligand-modified Mn(4) dicubane single-molecule magnet (SMM), [Mn(4)(Bet)(4)(mdea)(2)(mdeaH)(2)](BPh(4))(4), are presented, where the cationic SMM units are significantly separated from neighboring molecules in the crystal lattice. There are no cocrystallized solva…