Materials Literature
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We report the one pot synthesis of a silver-polymer nanocomposite in supercritical carbon dioxide (scCO(2)) whereby an organometallic silver complex is thermally decomposed in the presence of a reversible addition fragmentation chain transfer (RAFT) agent during a polymerisation reaction in which the RAFT agent simult…
The complexes [Et(4)N](3)[Ln(eta(2)-dcnm)(6)] (Ln = La, Ce, Nd, Gd, dcnm = dicyanonitrosomethanide) have discrete N, O 12-coordination owing to symmetrical chelation of the nitroso donor groups.
The celebrated physicist and Nobel laureate Richard Feynman was the first to predict the opportunities presented by the manipulation of matter at the level of individual atoms and molecules. Today, almost 50 years after his classic lecture on the wonders of the small world, the evolving nanotechnologies have the poten…
A series of C2-symmetric bridged silsesquioxanes derived from L- and D-valine have been designed and synthesized. They were capable of forming physical gels in organic solvents such as ethanol, THF, and 1,4-dioxane. These silsesquioxanes formed helical bundles in 1,4-dioxane. With respect to the helical sense, a clear…
Emissive terbium complexes, suitable for protein conjugation, incorporating a pyrazoyl-1-aza-xanthone chromophore have been prepared; they exhibit cellular uptake and possess a much lower sensitivity to excited state quenching.
Metal and semimetal nanotube-nanowire heterojunction arrays have been achieved by sequential electrochemical-deposition inside the nanochannels of anodic aluminium oxide template with a layer of Au thin enough to leave the pores open.
The synthesis, photophysical and photochemical properties of the tetra- and octa-poly(oxyethylene)substituted zinc (II) phthalocyanines are reported for the first time. The new compounds have been characterized by elemental analysis, IR, 1H and 13C NMR spectroscopy, electronic spectroscopy and mass spectra. General tr…
In this paper, we review the recent development of synthetic architecture of nanomaterials through oriented aggregations of primary colloidal particles. Various organising manners via this mechanism have been illustrated, and the relationships among zero-, one-, two-, and three-dimensional (0D, 1D, 2D and 3D) material…
A novel, thermally curable, tri-component organic glass for electro-optic applications was designed and synthesized. The system employed the Diels–Alder cycloaddition reaction to effect efficient cross-linking. The first component was a dendrimer containing multiple electro-optic chromophore substituents surrounded by…
The reaction of 2 equivalents of 2-methyl-1,4-bis(2,6-dimethylphenyl)-1,4-diaza-1,3-butadiene, ((1)L(Ox))(0), or 2-methyl-1,4-bis(2,6-diisopropylphenyl)-1,4-diaza-1,3-butadiene, ((2)L(Ox))(0), in diethyl ether or n-hexane with 1 equivalent of Ni(cdt) where (cdt)(0) is the ligand cyclododecatriene affords dark red, dia…
We have studied the effect of thermal evaporation rate on the basic physical properties of glassy (As2S3) x (As2Se3)1−x thin films on glass substrates and have determined the optimal range of deposition rates corresponding to the highest photosensitivity and long-term stability of the films. The results are interprete…
Mechanochemical synthesis of zinc ferrite, ZnFe2O4, was attempted from a powder mixture of iron (III) oxide, alpha-Fe2O3 and zinc (II) oxide, ZnO. Nanocrystalline zinc ferrite, ZnFe2O4 powders were successfully synthesized only by milling for 30 hours. The X-ray diffraction spectrum of the as-milled powders (without h…
We propose and optimize the antireflection coating composed of a row of tapered dielectric waveguides for two-dimensional air hole-type photonic crystal negative refraction slab lens. The image quality of the lens with the antireflection coating is improved. The simulation result using finite difference time domain me…
Using the Cottrell-Bilby kinetics model for solute atoms, evolution of the solute concentration around dislocation line has been investigated with respect to the strain rate. Three types of interactions between dislocation and solutes were obtained: At low strain rates, the dislocation is effectively pinned by its con…
Reduced activation ferritic/martensitic steels (RAFs), such as F82H (Fe-8Cr-2W-0.2V-0.04Ta-0.1C), are the leading candidates for structural materials of fusion reactors, and it is essential for the development of RAFs to assure its good for fusion application. In this study, the influence of Ti on impact property was…
The growth of ettringite crystal by combining calcium hydroxide and aluminum sulfate solutions including some admixtures have been investigated using the microscope with high magnifications up to 3000 degrees. The nucleation, growth rate and morphology of ettringite were observed to clear the effect of admixtures.
Abstract Ammonium magnesium phosphate monohydrate NH 4 MgPO 4 ·H 2 O was prepared via solid state reaction at room temperature and characterized by XRD, FT‐IR and SEM. Thermochemical study was performed by an isoperibol solution calorimeter, non‐isothermal measurement was used in a multivariate non‐linear regression a…
The use of the boundary element method (BEM) in simulating steady‐state experiments of scanning electrochemical microscopy in feedback mode and in generation‐collection mode using complex three dimensional geometries has been shown in previous papers. In the context of generation‐collection mode experiments, catalytic…
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The influence on the growth morphology of the spherical crystal in the undercooled melt imposed by the far field flow is studied by the asymptotic method. It is shown that the far field flow leads to convection in the melt such that the front interface of a growing spherical crystal grows into the undercooled melt in…