Materials Literature
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The charge transport properties of individual, metallic nitrogen doped, single-walled carbon nanotubes are investigated. It is demonstrated that n-type conduction can be achieved by nitrogen doping. Evidence was obtained by appealing to electric-field effect measurements at ambient condition. n-type conduction is attr…
Reactive Powder Concrete (RPC) is a cementitious material consisting of cement, sand, silica fume, silica flour, superplastiser, water and high strength steel fibres. The material, developed by Bouygues the parent company of VSL, is marketed under the brand name of Ductal®. Production in Australia commenced in early 2…
Electrically conducting polymers described as a new class of 'synthetic metals' reached a high interest in the last years, confirmed by the 2000 Nobel Prize in chemistry for the discovery and development of conductive polymers (Alan J. Heeger, Alan G. MacDiarmid and Hideki Shirakawa). The most commonly studied classes…
We studied heat transfer along a silicon nanowire suspended between two thin-film heaters using a thermoreflectance imaging technique. The thermoreflectance imaging system achieved submicrometer spatial resolution and 0.1/spl deg/C temperature resolution using visible light. The temperature difference across the nanow…
Liposomes composed of egg-phosphatidylcholine (EPC) incorporating quercetin (QR) were prepared by the thin-film hydration method (TFHM) and the monophase solution method (MSM). A rapid and slow freeze-drying process was applied for both laboratory and industrial scales. The purpose of this study was to compare the two…
Bile acids are natural compounds that play an important biological role in the body. They are candidates of choice as building blocks of biocompatible and degradable polymers. Bile acids have been incorporated into biodegradable polymeric structures as pendant moieties on natural polymers, such as dextran and chitosan…
The development and commercialization of nanoclays (NCs) offers new possibilities to tailor adhesives on the nanoscale range. Three types of functionalized nanoclays were included in the current study, two novel ones and one commercial nanoclay. The novel ones were based on aminosilane and amidoamine hyperbranched pol…
An organic RF identification transponder operating at a carrier frequency of 13.56MHz is presented in a proof of concept IC with no ID. The rectifier and the digital integrated modulation circuit are based on organic p-type semiconducting material with a total transponder area of 4cm2. The operational distance is 0 to…
A high-molecular weight tetrametallic supramolecular complex [(Ln-DTPA-phen)3Fe]- (Ln = Gd, Eu, La) has been obtained upon self-assembly around one iron(II) ion of three 1,10-phenantroline-based molecules substituted in 5'-position with the polyaminocarboxylate diethylenetriamine-N,N,N',N',N'-pentaacetate, DTPA-phen(4…
An attempt has been made to investigate the application of temperature stimulating shape memory polyurethane for smart breathable clothing and the principle of temperature stimulating polymer described. Shape memory behaviour of shape memory polyurethane (SMPU) and its relationship with temperature sensitive water vap…
Sr3Fe2TeO9 and Ba3Fe2TeO9 double perovskites have been prepared in polycrystalline form by solid state reaction, in air. These materials have been studied by X-ray diffraction (XRD), neutron powder diffraction (NPD) and magnetic measurements. At room temperature, the crystal structure of Sr3Fe2TeO9 is tetragonal, spac…
Supramolecular porphyrin prisms have been obtained via coordinative self-assembly and characterized by 1H NMR, PFG NMR, electronic absorption spectroscopy and synchrotron-based measurements of solution phase X-ray scattering and diffraction.
We introduce an acid addition technique for the rapid assessment of the influence of solution pH, anion (such as chloride) concentration, and temperature on the dissolution of metals. We demonstrate the technique with the characterization of the dissolution of alloy 22 (Ni–22Cr–13Mo–3W–3Fe) exposed to chloride-contain…
Addition of a dilute acetic acid solution of 8-quinolinol to an H2O2 solution of freshly precipitated H2WO4·2H2O furnishes a yellow adduct [WO(O2)2·2QOH] 1 which, on crystallization from a suitable solvent, affords orange-yellow complex [WO(O2)(QO)2] 2. When 2 reacts stoichiometrically with olefinic compounds in a 1∶1…
Three-dimensional (3D) hollow woven structures, used as reinforcement for composites requiring special properties such as lightweight and energy absorption, are one fabric type that the conventional weaving technology is capable of manufacturing. However, the fact that the design of these structures is complex, and th…
The design, synthesis and characterization of a new class of peptide nanotubes, self-assembled from cyclic homo- and hetero-beta-peptides based on cis-furanoid sugar amino acid and beta-hGly residues are described; these results represent the expansion of the conformational pool of cis beta-sugar amino acids in the de…
The role of metallic bonding in the crystallographic pitting of magnesium (Mg) has been investigated using atomistic simulations. To assess the degree of metallic bonding in Mg (0001) and surfaces the modified embedded atom method (MEAM) has been used. The interatomic potentials developed with MEAM were then used by a…
The electrochemical deposition of Cu into and thick, highly porous Ni/yttria-stabilized zirconia (YSZ) cermets was investigated. An electrochemical cell in which the electrolyte solution was allowed to flow through a porous substrate was used to eliminate mass-transfer limitations and to determine the conditions for w…
The synthesis of several cyclen based lanthanide [Eu(III) and La(III)] complexes is described; these metallo ribonuclease mimics are based on the use of alkyl amines as pendent arms, which give rise to fast hydrolysis within the physiological pH range of HPNP (an RNA model compound) that is highly dependent on the len…
Electron probe microanalysis (EPMA) has been applied for the quantitative evaluation of Cl ingress into concrete. In order to obtain quantitative data on Cl concentration, the measurement conditions were discussed statistically in detail and sample measurement conditions were introduced. The absolute concentrations of…