Materials Literature
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The use of the Schiff-base ligand N,N'-bis(5-bromo-3-methoxysalicylidene)propylene-1,3-diamine (H2L) and 1,4-benzenedicarboxylate (BDC) enables the construction of the hexanuclear luminescent Zn-Nd complex [Zn4Nd2L4(1,4-BDC)2].[Nd(NO3)5(H2O)].Et2O.2EtOH.3H2O.
The purpose of this study was to evaluate the effect of heat treatments on the Vickers hardness of commercially pure titanium and Ti-6Al-4V cast alloys. Six-millimeter-diameter cylindrical specimens were cast in a Rematitan System. Commercially pure titanium and Ti-6Al-4V alloy specimens were randomly assigned to 3 gr…
Perovskite oxides, , have been investigated in the search for new solid oxide fuel cell (SOFC) anode materials. (LSTM4646) shows an electrical conductivity of in air and in wet Ar/4% at . It is thermally and chemically compatible with yttria-stabilized zirconia (YSZ) electrolytes. Three processes govern the electroche…
( , Pr, Nd, Sm, and Gd) perovskite oxides have been synthesized and compared as cathode materials for intermediate temperature solid oxide fuel cells (SOFC). Both the electrical conductivity and the oxide ion vacancy concentration decrease from to Gd, which leads to a decrease in the electrocatalytic activity for oxyg…
A waveguide-based retrieval method for measuring complex permittivity and permeability tensors of metamaterials is presented. In the proposed scheme, multiple independent sets of scattering data for the material under test with different orientations are measured in the frequency range corresponding to the dominant TE…
The effects of zinc addition on microstructure evolution and mechanical properties of Mg-Gd-Y-(-Zr) based alloys are investigated in details using OM, TEM, Vickers hardness tests and tensile tests. Specific line-shaped structure is formed inside of matrix grain in the as-cast specimen. This structure is dissolved afte…
We investigated thermoelectric properties of 20-%-Nb-doped SrTiO3 at high-temperature (300-1000 K) using single-crystalline epitaxial film, polycrystalline film (average grain size ~200 nm) and ceramic (average grain size ~20 μm) samples to clarify the effect of grain boundaries on the thermoelectric performance. Alth…
The effect of adding R2O (R=Li, Na and K) or RO (R=Ba, Mg) on the viscosities of CaO–SiO2–Al2O3 (CaO/SiO2=0.67, 1.00 or 1.22, Al2O3=20 mass%) melts has been measured by rotating crucible viscometer. In addition, structural characterizations of these quenched vitreous samples have been investigated by 27Al and 29Si MAS…
The North American market for biodegradable plastics in 2005 was estimated to be around 60 million pounds (27 kt). Starch-based polymer blends were expected to account for 30 million pounds (14 kt) with significantly lower growth rates than other biodegradable polymers such as polyesters. The main hurdle in the growth…
We report the preparation and luminescence enhancement of thioglycolic acid (TGA) stabilised CdTe quantum dots (QDs) for use as live cell imaging tools in THP-1 macrophage cells. Short irradiating times utilising a high powered Hg lamp resulted in increases in luminescence efficiencies of up to ∼40% and permit signifi…
We present an energy-based continuum model for the analysis of nanoscale materials where surface effects are expected to contribute significantly to the mechanical response. The approach adopts principles utilized in Cauchy–Born constitutive modelling in that the strain energy density of the continuum is derived from…
New urea containing gels have been used to prepare and stabilise gold nanoparticles by in situ reduction.
Stability and dissolution of platinum single-crystal surfaces were investigated with atomic force microscopy and inductively coupled plasma mass spectrometry. Both low-index surfaces and nanofaceted surfaces were investigated. A clear difference was observed between the large low-index surfaces and the nanofaceted sur…
An advanced hybrid electrochemical capacitor (HEC) has been proposed that uses a wide potential range at the positive electrode (cathode). The conventional HEC uses Li-dopable carbon as the negative electrode (anode) and activated carbon as the cathode, where the potential ranges from vs . In the advanced HEC, the pot…
Static and dynamic density functional calculations have been used to study the structure and energetics of water adsorbed on the main cleavage plane of ZnO. In the single molecule limit we find that molecular adsorption is strongly preferred. The water binding energy increases for higher coverages due to an almost iso…
We present the first demonstration of all optical wavelength conversion in chalcogenide glass fiber including system penalty measurements at 10 Gb/s. Our device is based on As2Se3 chalcogenide glass fiber which has the highest Kerr nonlinearity (n(2)) of any fiber to date for which either advanced all optical signal p…
This paper reports on recent progress in the synthesis of nanostructured siloxane-organic hybrids based on the self-assembly of amphiphilic silicon-based precursors. A variety of ordered hybrid materials have been obtained by molecular design of the precursors. Alkoxysilanes and chlorosilanes with covalently attached…
Microencapsulation provides a simple and cost-effective way to enclose bioactive materials, such as drugs and cells, within a semi-permeable polymeric membrane for the purpose of protecting the bioactive materials and releasing the enclosed substances or their products in a controlled fashion. This article presents an…
Bismuth subcarbonate ((BiO)2CO3) nanotubes with uniform diameters of about 3-5 nm were fabricated from bismuth citrate; these nanotubes exhibit antibacterial properties against Helicobacter pylori (50% inhibition at 10 microg mL(-1)), a bacterium causing peptic ulcers and gastritis.
A smart surface with wettability that can be switched between superhydrophobicity and superhydrophilicity has been realized on a transparent and conductive SnO2 nanorod film by the alternation of UV-irradiation and dark storage.