Materials Literature
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(0k0) oriented films of the magnetoelectric material Ga2−xFexO3 (0.8 ≤ x ≤ 1.4) have been grown by pulsed laser deposition on various substrates: the non conducting yttrium stabilized zirconia (YSZ) (001) and the conducting indium tin oxide (ITO) buffered YSZ(001) and single crystalline Pt(111) buffered YSZ(111). The…
Formation of highly ordered TiO2 nanotubular arrays during anodization of titanium can be elucidated by using the equifield strength model and a double-layer structure. The two characteristic microstructural features of anodic titanium oxide (ATO) in comparison with anodic aluminium oxide (AAO), a thin titanium hydrox…
Freezing and its combination with emulsion-templating are investigated to systematically tune pore morphologies and volumes in macroporous materials. Macroporous structures with controllable pore morphologies are formed under defined freezing conditions. Oil-in-water emulsions are processed to produce porous polymeric…
The toxicity and ecotoxicity of nanomaterials is poorly understood and the risks of environmental exposure are largely unknown. In vitro cellular toxicity of C60-fullerene and carbon nanotubes was investigated by measuring the retention of a cationic probe (neutral red) within the lysosomal compartment of phagocytic b…
AIM: To investigate the antioxidant activity of chito-oligosaccharides (COSs) on pancreatic islet cells in diabetic rats induced by streptozotocin. METHODS: The antioxidant effect of COSs on pancreatic islet cells was detected under optical microscopy and with colorimetric assay and gel electrophoresis. The activities…
We derive a model problem for quasicontinuum approximations that allows a simple, yet insightful, analysis of the optimal-order convergence rate in the continuum limit for both the energy-based quasicontinuum approximation and the quasi-nonlocal quasicontinuum approximation. For simplicity, the analysis is restricted…
We report on the synthesis and characterization of cadmiumsulfide quantum dots (CdS-QDs) with three different types of capping ligands, mercaptoacetic acid (CdS-MAA), cysteamine, and 2-mercaptoethanesulfonic acid (CdS-CM), or tiopronin (CdS-TPN). All three types of QDs generate reactive oxygen species (ROS), in partic…
The lotus-leaf-like polystyrene (PS) micro- and nanostructure film was prepared and characterised. This film reveals superhydrophobicity and good blood compatibility. The realization of this hierarchical PS nanostructure film could be important for further understanding non-wettability of biological surfaces with micr…
The deliberate synthesis of the Keplerate [K(20) subset{(W)W(5)O(21)(SO(4))}(12)(VO)(30)(SO(4))(H(2)O)(63)](18-) with 20 pores all closed by K(+) in a supramolecular fashion proves that it is possible to follow new routes in polyoxotungstate chemistry based on pentagonal {(W)W(5)}-type units and to tune magnetic excha…
The surface structure developed on Ti metal after an NaOH and heat treatment and subsequent soaking in a simulated body fluid (SBF) was investigated using cross-sectional analysis involving SEM observations and EDX analysis, as well as an outer surface analysis involving SEM observations, thin-film X-ray diffraction,…
The luminescence properties of orange-yellow-emitting -activated were optimized for application to blue/near ultraviolet (n-UV) light-emitting diodes (LEDs). showed strong orange-yellow emission peaking at under blue and n-UV light of 450 and , respectively, and the effects of Ca and Ba substitutions into sites on the…
Four novel hetero-tetranuclear d-f coordination complexes, [Ln2Cd2(p-toluylate)10(phen)2] (Nd, 1; Pr, 2; Sm, 3) and [Ho2Cd2(p-chloro-benzoate)10(phen)2](4) (phen = 1, 10-phenanthroline), are synthesized by the hydrothermal method, and their structures are studied by single-crystal X-ray diffraction. Structures 1-3 are…
Complex metal hydrides such as sodium aluminohydride (NaAlH4) and sodium borohydride (NaBH4) are solid-state hydrogen-storage materials with high hydrogen capacities. They can be used in combination with fuel cells as a hydrogen source thus enabling longer operation times compared with classical metal hydrides. The mo…
In this paper, we attempt to reveal the nature of the chemical and electromagnetic mechanisms of tip-enhanced Raman scattering (TERS). Direct visual evidence regarding the chemical mechanism via charge transfer was obtained with charge difference density. It is found that there are several kinds of charge transfer: (1…
The volume fraction of ferrite and austenite phase and corrosion resistance of 26.2Cr-6.99Ni-2.37Mo-2.88W-0.35N duplex stainless steel have been studied by the use of optical microscopy, Feritscope, EBSD, SEM and Anodic polarization test after solution treatment at every 20°C at 1050°C∼1200°C for 30 min. As the temper…
The surfaces of boron nanoparticles 10-150 nm in diameter, prepared by gas phase pyrolysis of decaborane vapour at 1 atm and 700-900 degrees C, can be halogenated by treatment with Br2 or XeF2; the surface halogenation somewhat increases the onset temperature for the oxidation of the particles under O2.
Cu(2+)-doped Pb[Zr(0.54)Ti(0.46)]O(3) (PZT) and Cu(2+)-doped [K(0.5)Na(0.5)]NbO(3) (KNN) ferroelectrics with a dopant concentration of 0.25 mol% were investigated by means of multi-frequency and multi-pulse electron paramagnetic resonance (EPR) spectroscopy. Through the use of high magnetic fields and pulsed microwave…
Aqueous dispersions of poly(ethylene glycol) (PEG) capped poly[2-(2',5'-bis(2''-ethylhexyloxy)phenyl)-1,4-phenylene vinylene] (BEHP-PPV) nanospheres with an average particle diameter of 13 nm have been synthesised by a miniemulsion route and used in simple intracellular imaging experiments.
Elastic phonon scattering at an atomically rough interface that separates two fcc lattice leads is computed via a Green’s function method. Results are compared to specular and diffuse phonon scattering models, both of which are widely used in the numerical simulations of phonon Boltzmann transport equations. The shape…
Novel ruthenium-based supported ionic liquid phase (SILP) catalysts for the water-gas shift (WGS) reaction are reported which, compared to classical low temperature shift systems, operate at much lower temperatures and even at ambient pressure.