Materials Literature
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In order to improve particle properties, new processes combining granulation and crystallization are being developed. This work deals with the spherical crystallization process by the quasi-emulsion mechanism applied to carbamazepine, a pharmaceutical drug. The aim of the present study was to produce of spherical grai…
The influence of the crystal orientation in porous crystalline films of ZnO electrodeposited on the photoelectrochemical characteristics of the films is studied. For differently oriented ZnO thin films following removal of the respective structure-directing agent (SDA) and adsorption of a sensitiser, time-resolved pho…
Environmentally attractive synthetic routes are studied for the synthesis of MgAl-layered double hydroxides (LDHs) incorporating a series of organic dicarboxylate anions. The reaction conditions are systematically explored to ascertain the effect of acid chain length and layer charge (i.e. Mg/Al ratio). The materials…
Composites of high-molecular-weight polyaniline (PANI) and single-walled carbon nanotubes as well as composites of PANI and multiwalled carbon nanotubes of various weight percentages were prepared using solution processing. The integration and distribution of the carbon nanotubes (CNTs) in the PANI matrix were investi…
This communication describes how chemical nanofabrication—a combination of bottom-up chemical methods and top-down nanoscale patterning—provides an approach to generate patterned and free-standing transition metal chalcogenide nanostructures.
Pair distribution function (PDF) analysis, based on experimental X-ray or neutron diffraction data of crystalline powders, provides an insight into structural disorder of complex materials. However, the observation of interatomic vectors is confined to their norms. Based on three-dimensional single crystal X-ray diffr…
A review of the method, results, and possible benefits of the directed assembly of block copolymers on lithographically defined, chemically nanopatterned substrates. Insertion of block copolymers into the lithographic process showed the potential to reduce critical dimension variation in the lithographic process by co…
Stable surfactant-free, water-dispersed, micron-sized organic solvent colloids have been a challenging subject of major interest both experimentally and theoretically in recent years. In this article, novel matrix capsules are introduced to carry an organic solvent ( toluene) into water and form a stable solvent dispe…
Abstract Empty fruit bunches (EFB) of the oil palm have great potential to be used as industrial fibers in various industries, such as fiber board, mattress and cushion, erosion controller, thermoplastic filler, paper, acoustics control, sound insulator, and animal feed industries. A rotary drum dryer with a flue gas…
In the present paper the basic strengthening mechanisms operating in microstructures are discussed with respect to their application in submicron/nano materials. This analysis focuses on these strengthening mechanisms in bcc microstructures, where the effect of grain boundaries is very strong. An experimental study of…
Thermodynamic and magnetic properties of the Pd0.93Ag0.07 hydrides were measured. The isotherms of Pd0.93Ag0.07 -H and -D systems in the temperature range 373–523 K showed the plateau regions to be within 0.05 < [Q (Q=H or D)]/[Pd0.93Ag0.07] < 0.4. From an investigation of the thermodynamic isotope effect for the form…
This paper presents a new approach to characterize nanoparticles using derivatives of scattering profiles of evanescent waves/surface plasmons. We start the procedure using the scattering profiles for an unknown configuration of nanoparticles, either from physical experiments or numerical simulations conducted for dif…
CdSe/ZnS quantum dots (QDs) conjugated to biomolecules that quench their fluorescence, particularly dopamine, have particular spectral properties that allow determination of the number of conjugates per particle, namely, photoenhancement and photobleaching. In this work, we quantify these properties on a single-partic…
Magnetite thin films have been grown onto polycrystalline copper substrates via an electrochemical route. X-ray diffraction was employed to identify the crystal structure. Detailed surface morphological analysis was performed by atomic force microscopy and field-emission-gun scanning electron microscopy. Experimental…
A new one-dimensional chain complex, Mn(hfac)(2)-bridged [2-(3-pyridyl)(nitronyl nitroxide)Mn(hfac)(2)](2), was prepared and its structure and magnetic properties were elucidated; the complex exhibited a large antiferromagnetic interaction of J(1)=-185 K between the three Mn(ii) atoms and the two nitronyl nitroxides t…
Rubber materials are made of two networks, chemical and filler networks. The networks are characterized usually by overall network density estimated at equilibrium condition. However, rubbers are used in nonlinear conditions where the filler network may change from the one at equilibrium. We need additional informatio…
The nitrosation of [Ru(NH3)6]2+ in hydrochloric acid and alkaline ammonia media has been studied; the patterns of interconversion of ruthenium complexes in reaction solutions have been proposed. In both cases, nitrogen(II) oxide acts as the nitrosation agent. The procedure for the synthesis of [Ru(NO)(NH3)5]Cl3 · H2O…
A modified Landau-Devonshire phenomenological thermodynamic theory is used to describe the influence of in-plane anisotropic strains on the dielectric and pyroelectric properties of epitaxial Ba0.7Sr0.3TiO3 thin films grown on dissimilar tetragonal substrates. The in-plane anisotropic strain factor-temperature phase d…
Phase equilibria and compositions with tie-lines between the δ-Re, γ, γ′, β, Ni2Al3 as well as Re2Al and ReAl3 phases in a ternary Ni-Al-Re system were investigated at 1423 K by heat-treating of Ar-arc-melted Ni-Al-Re alloys in vacuum for times up to 3600 ks, followed by water-quenching and concentration measurements…
The influence of tungsten and vanadium oxides on the microstructure, phase formation and De-NOx activity of selective catalytic reduction (SCR) catalysts has been investigated. Binary (V2O5/TiO2 and WO3/TiO2) and ternary (V2O5-WO3/TiO2) samples with compositions similar to those of commercial SCR catalysts were examin…