Materials Literature
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The thermal stability and the thermal expansion of wheat straw flour filled polypropylene and high density polyethylene composites were studied using thermogravimetric analysis and thermomechanical analysis. The results of this study showed that the thermal degradation and the thermal expansion of the composites were…
Abstract Based on the 2,6‐bis(pyrazol‐3‐yl)pyridine ligand (H 2 bpp) the hexanuclear iron(III) complex [Fe 6 (bpp) 4 ( μ 3 ‐O) 2 ( μ ‐OMe) 3 ( μ ‐OH)Cl 2 ] ( 1 ) was synthesized. The reaction with iron(II) chloride and additional pyridine leads to the exclusive formation of the complex through self‐assembly process. S…
Abstract Several routes to produce ultrafine‐grained structures in steels without severe plastic deformation are introduced. The key point of the ideas is to combine plastic deformation with the phase transformation of matrix phases. When as‐quenched martensite in steels is used as a starting microstructure, sub‐micro…
Under an extreme pressure of 12 GPa, mesoporous coesite can be formed directly from periodic mesoporous silica without the aid of a template. The porous coesite particles obtained from SBA-16 are single crystalline, with a pore size of about 4 nm and about 50 % porosity. The formation can be attributed to the kinetica…
Abstract Polyaniline/copper and polyaniline/nickel composites were synthesized in the presence and absence of surfactants using ammonium persulfate as an initiator. The structural and surface characteristics of the composites were studied and compared using different techniques. The interfacial interactions and therma…
Benthic diatom assemblages respond to changes in water quality, and this response is evidenced by shifts in taxonomic composition. As a result, several taxon-based indices have been developed for monitoring purposes. Some authors have suggested that diatom body size might provide a simpler method for bioassessment tha…
The interferogram of a high index phase mask of 200 nm period under normal incidence of a collimated beam at 244 nm wavelength with substantially suppressed zeroth order produces a 100 nm period grating in a resist film under immersion. The paper describes the phase mask design, its fabrication, the effect of electron…
Abstract Research into organic–inorganic nanocomposites has recently become popular, particularly the development of new polymer nanocomposites. Compared to pristine polymers or conventional composites, these nanocomposites exhibit improved properties. The storage modulus of a poly(vinyl chloride) (PVC)/polyhedral oli…
The synthesis of 1,18-nucleotide-appended bolaamphiphiles (1, 2, 4, and 6) is reported, in which a 3'-phosphorylated guanidine, adenosine, thymidine, or cytidine is connected to each end of an octadecamethylene chain. Single-component self-assemblies and binary self-assemblies with the complementary oligonucleotides d…
The nonequilibrium response of a colloidal liquid-crystalline nematic phase to an external aligning field, which rotates in a plane, is explored by dynamical fundamental measure density-functional theory. Depending on the drive frequency, different dynamical states are found, which are characterized by towing and over…
Gold/iron oxide magnetic nanoparticles are hybrid nanoparticles containing a core of magnetic iron oxide and surface colloidal gold, which allows for various biomaterials to be immobilized on the surface of the iron oxide nanoparticles via colloidal gold. Here, we developed a novel magnetic resonance (MR) imaging agen…
Infrared spectroscopy of adsorbed CO has been used to characterize the effect of adsorbed methanol on the Lewis acidity of 4 nm rutile TiO(2) nanoparticles. Measurements of CO absorbance and vibrational frequency have revealed that CO adsorbs primarily at one class of Lewis acid sites on clean TiO(2) particles, where…
We present here results on the transfer kinetics of monoglyceride and n-alkanes in water. Transfer kinetics between cubosomes and emulsion droplets were followed using time-resolved small-angle X-ray scattering measurements, while dynamic light scattering was used to study the changes in the particle radii. The effect…
ADVERTISEMENT RETURN TO ISSUEPREVBook ReviewNEXTDesign and Construction of Coordination PolymersMichael J. ZaworotkoView Author Information University of South FloridaCite this: J. Am. Chem. Soc. 2010, 132, 22, 7821Publication Date (Web):May 6, 2010Publication History Published online6 May 2010Published inissue 9 June…
Multilayers formed by the sodium salt of poly(4-styrenesulfonate), PSS, and triblock copolymers of the form PDMAEMA-PCL-PDMAEMA (PDMAEMA corresponding to poly[2-(N,N-dimethylamino)ethyl methacrylate), and PCL to poly(epsilon-caprolactone) have been built by layer-by-layer self-assembly from the aqueous polyelectrolyte…
First order structural transformation (FOST) and inverse magnetocaloric effect (IMCE) were investigated in melt-spun ribbons of Ni 49 Mn 37.4 Sn 13.6 and Ni 50 Mn 34.5 Sn 15.5 Heusler alloys. Thermal and magnetic characterization of the ribbons revealed the existence of FOST. Interestingly, in the Ni 49 Mn 37.4 Sn 13.…
We calculate the temperature-dependent charge carrier transport of bilayer graphene (BLG) impacted by Coulomb impurity scattering within the random-phase approximation. We find the polarizability is equal to the density of states at zero momentum transfer and is enhanced by a factor $\text{log}\text{ }4$ at large mome…
We present a model for the effective magnetic properties of metamaterials composed of gyromagnetic inclusions in which electromagnetic retardation is accounted for. The formalism is used to derive the effective permeability tensor of axially magnetized ferromagnetic-metallic wires. The complex size-dependent gyromagne…
A series of neutral pentacoordinate silicon(IV) complexes with an SiSONCX skeleton (X=F, Cl, Br, I, N, or C) was synthesized and structurally characterized by multinuclear solution-state and solid-state NMR spectroscopy and single-crystal X-ray diffraction. These compounds contain an identical tridentate dianionic S,N…
We report high-resolution, high-statistics inelastic x-ray scattering measurements of the dynamic structure factor of water as a function of momentum and energy transfer in various thermodynamic conditions, including high-pressure liquid near the melting point, supercooled liquid and polycrystalline ice. For momentum…