Materials Literature
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Nanocomposite polyHIPEs were synthesised by the polymerization of the continuous phase of high internal phase emulsions containing titania nanoparticles in the organic or oxidized CNTs in the aqueous phase. The resulting polymer foams possessed an interconnected pore structure characteristic of polyHIPEs. The incorpor…
We consider the equilibrium flotation of a thin, flexible cylinder at the interface between a liquid and a gas. In particular, we determine the maximum load that such a cylinder can support without sinking. We find that as the length of such a cylinder increases the maximum load at first increases. However, the maximu…
The ability to adhere onto surfaces is of very high importance for microorganisms, enabling them to stay in a favourable habitat for life. In the case of Bacteria cell surface organelles called fimbriae/pili have been shown to be used for adhesion; corresponding cell surface appendages of Archaea have not yet been def…
Abstract A series of polypropylene (PP)/polystyrene (PS) blends were prepared by solvent blending with PS‐grafted PP copolymers (PP‐ g ‐PS) having different PS graft chain length as compatibilizers. The interfacial compatibility was significantly improved with increasing PS graft chain length until the interface was s…
Three-dimensional nano-architectures with varying shape, morphology and size were fabricated by the phase separation of methyltrichlorosilane (CH(3)SiCl(3)) on commercially available glass and SiO(2) substrates. By changing the synthesis conditions, CH(3)SiCl(3) nanostructures evolved from discrete to quasi-network or…
Abstract A water‐soluble carboxymethyl chitosan was prepared with a view to develop a multifunctional finish on cotton. Carboxymethyl chitosan (CMCTS) was synthesized by chemical reaction of chitosan with monochloroacetic acid under alkaline condition. The water soluble CMCTS was applied to cationized cotton with diff…
Activating gold: High-resolution photoemission spectroscopy and DFT calculations were used to study the interaction of SO2 with Au/TiC(001) surfaces. Both revealed molecular adsorption of SO2 on TiC(001) but complete dissociation of the SO bonds on Au/TiC(001) (see picture). Au/TiC(001) cleaves SO bonds more efficie…
We report here a novel phenomenon: selective metal deposition on photoswitchable diarylethene (DAE) surfaces. Magnesium vapor was deposited by vacuum evaporation on the colored DAE but not on the uncolored surface. The selective deposition originates in the change of the glass transition temperature of the amorphous D…
Recent experiments report that the long-looked-for thermotropic biaxial nematic phase has been finally detected in some thermotropic liquid crystalline systems. Inspired by these experimental observations, we concentrate on some elementary theoretical issues concerned with the classical sixth-order Landau-de Gennes fr…
Abstract A series of waterborne polyurethane adhesives (WPUAs) were prepared from diphenylmethane‐4,4′‐diisocyanate (MDI), 1,6‐hexamethylene diisocyanate (HDI), poly(1,4‐butanediol adipate) diol (PBA), 1,4‐butanediol (BDO), and internal‐emulsifying agents by the prepolymer mixing method. The viscosity, mechanical prop…
Abstract This article reports crystallization behaviors of isotactic polypropylene (iPP) with an aryl amide derivative (TMB‐5) as β‐form nucleating agent. The effects of nucleating agent concentration, thermal history and assemble morphology of nucleating agent on the crystallization behaviors of iPP were studied by d…
The use of noble metals as catalysts for mercury oxidation in flue gas remains an area of active study. To date, field studies have focused on gold and palladium catalysts installed at pilot scale. In this article, we introduce bench-scale experimental results for gold, palladium and platinum catalysts tested in reali…
Using the density functional theory, we have demonstrated the chemical functionalization of semiconducting graphene nanoribbons (GNRs) with Stone-Wales (SW) defects by carboxyl (COOH) groups. It is found that the geometrical structures and electronic properties of the GNRs changed significantly, and the electrical con…
Apatite-type oxides of general formula La 9.33+ x (SiO 4 ) 6 O 2 + 3 x /2 have been attracting considerable interest recently because of their observed high oxide-ion conductivity and potential use in solid oxide fuel cells (SOFCs), oxygen sensors, and ceramic membranes. In this paper, computer modeling techniques are…
Single-stranded DNA is an effective noncovalent dispersant for individual single-walled carbon nanotubes (CNTs) in aqueous solution, forming a CNT-DNA hybrid material that has advantages for CNT separations and applications. Atomic force microscopy (AFM) reveals a regular pattern on the surface of CNT-DNA. We found th…
The lowest Landau level of graphene is studied numerically by considering a tight-binding Hamiltonian with disorder. The Hall conductance sigma_{xy} and the longitudinal conductance sigma_{xx} are computed. We demonstrate that bond disorder can produce a plateaulike feature centered at nu=0, while the longitudinal con…
We present a new design of peptide-polymer conjugates where a polymer chain is covalently linked to the side chain of a helix bundle-forming peptide. The effect of conjugated polymer chains on the peptide structure was examined using a de novo designed three-helix bundle and a photoactive four-helix bundle. Upon attac…
Arrays of vertically aligned, single crystalline silver nanorods were deposited on silicon substrates via the glancing angle deposition technique using an e-beam system. The single crystalline Ag nanorods are several tens of nanometres in diameter and several hundred nanometres in length and could serve as excellent s…
The combination of materials that possess different properties (such as, for instance, fluorescence and magnetism) into one single object of nanoscale size represents an attractive challenge for biotechnology, especially for their potential relevance in biomedical applications. We report here the preparation of novel…
We report a series of new surface reconstructions on BaTiO3(001) as a function of environmental conditions, determined via scanning tunneling microscopy and low energy electron diffraction. Using density functional theory calculations and thermodynamic modeling, we construct a surface phase diagram and determine the a…