Materials Literature
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Silicotungstic acid and phosphotungstic acid were prepared and characterized by Fourier Transform Infrared Spectroscopy (FTIR) and X-ray diffraction (XRD). The results showed that the prepared catalysts possess classical Keggin structure. The factors on the degradation of methyl orange, such as the kind of catalyst, t…
The magnetic properties of a three-dimensional infinite network compound, [{Ru₂(m-FPhCO₂)₄}₂(BTDA-TCNQ)] (m-FPhCO₂⁻ = m-fluorobenzoate; BTDA-TCNQ = bis(1,2,5-thiadiazolo)tetracyanoquinodimethane), were investigated under hydrostatic pressures up to 12.9 kbar. The applied pressure caused the intralattice exchange coupl…
A new class of colloid structures, celloidosomes, has been developed which represent hollow microcapsules whose membranes consist of a single monolayer of living cells. Two routes for producing these structures were designed based on templating of: (i) air bubbles and (ii) anisotropic microcrystals of calcium carbonat…
The surface of silica nanoparticles has been modified using four sets of reagents: trimethoxysilanes (TMS), methoxysilanes (MS), dimethoxysilanes (DMS), and polydimethylsiloxanes (PDMS). Characterization of the organic loading and structure has been carried out. Glass slides have been coated with the organosilicas, an…
Ferromagnetic Ni-Mn based Heusler alloys undergo martensitic transformations leading to properties such as magnetic shape memory, magnetic field induced strain and magneto-caloric effects. The occurrence of such effects are closely related to the nature of magnetic interactions around the transition. These interaction…
MnO(2).3H(2)O ultrathin nanostructures with sizes of approximately 2-3 nm were synthesized at room temperature and transformation to well-dispersed nanorods was achieved after hydrothermal treatments.
The dispersion and manipulation of carbon nanotubes (CNTs) are of great importance if we are to utilise the unique properties of CNTs in a range of biological, electrical and mechanical applications. Recently, a designed amphiphilic peptide helix termed nano-1 has been shown to solubilise CNTs in aqueous solution. Fur…
Supramolecular cations of HOPD+([18]crown-6) and HMPD+([18]crown-6) were introduced into [Ni(dmit)2]- salts (HOPD+: o-aminoanilinium, HMPD+: m-aminoanilinium, and dmit2-: 2-thioxo-1,3-dithiole-4,5-dithiolate). Alternate layers of cations and anions were observed in the two new salts of (HOPD+)([18]crown-6)[Ni(dmit)2]-…
Using a genetic algorithm method to search for low-energy structures, we studied the evolution of structural motifs in Si, Ge, and Al clusters. We were able to observe how bulk-like structural motifs occur in these clusters as the size of the system increases, replacing structural motifs characteristic of clusters at…
We investigate the anti-fouling properties of polyelectrolyte multilayers bearing phosphorylcholine and triethylene glycol moieties and their adhesive response under stretching towards mammalian cells and fungi. More precisely we use a precursor multilayer deposited on glass and on an elastomeric silicone sheet and on…
The microstructural change at the interface between (LSM) cathode and yttria-stabilized zirconia (YSZ) electrolyte upon discharge was quantitatively evaluated by focused ion beam-scanning electron microscopy technique so as to elucidate the activation process of cathode. The performance of the single cell was enhanced…
A selective chemical vapor deposition process of a ruthenium (Ru) metal capping layer was investigated for Cu interconnects in ultralarge scale integrated circuits. X-ray fluorescence spectroscopy determined the Ru deposition selectivity as a function of the deposition temperature and substrate materials. The feasibil…
The amphiphilic double-tail peptides AXG were studied regarding secondary structure and self-assembly in aqueous solution. The two tails A = Ala6 and G = Gly6 are connected by a central pair X of hydrophilic residues, X being two aspartic acids in ADG, two lysines in AKG and two arginines in ARG. The peptide AD (Ala6A…
Time dependences of photocatalytic reduction of CO2 with water in a UV/TiO2 process were studied. \nThe main products of the process were found to be methanol and methane. The Langmuir–Hinshelwood \ntype kinetic equation was developed for modelling of CO2 photoreduction. A simple kinetic model incorporating…
Sr 1 − x La x Ti O 3 perovskites are strong candidate materials for the interconnects and anodes in solid oxide fuel cells. In this paper, the thermal expansion mechanism of Sr 1 − x La x Ti O 3 with La content of 0 ⩽ x ⩽ 0.3 during reduction-oxidation (redox) cycling is discussed. It was found that for La-doped Sr Ti…
In this study, the optical and electrical properties of epitaxial single crystal gallium-doped Mg(x)Zn(1-x)O thin films grown on c-plane sapphire substrates by pulsed laser deposition were investigated. In these films, the Ga content was varied from 0.05 to 7 at. % and the Mg content was varied from 5 to 15 at. %. X-r…
We present particulate simulation results for translational and rotational friction components of a shish-kebab model of a colloidal rod with aspect ratio (length over diameter) L/D=10 in the presence of a planar hard wall. Hydrodynamic interactions between rod and wall cause an overall enhancement of the friction ten…
Diffraction gratings are one of the most popular objects of analysis in electromagnetic theory. The requirements of applied optics and microwave engineering lead to many new problems and challenges for the theory of diffraction gratings, which force us to search for new methods and tools for their resolution. In Moder…
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Simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC) techniques were used for the characterization of the thermal degradation of ibuprofen. TG analysis revealed that the thermal decomposition occurs in single step, in nitrogen atmosphere. DSC curves showed that ibuprofen met before the decomp…