General, high-affinity approach for the synthesis of fluorophore appended protein nanoparticle assemblies
Metallothionein fusion proteins allow for site-specific, orthogonal functionalization of proteins to a variety of nanoparticles.
Materials Literature
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Photoregulation of the intercalation behavior of phenol for azobenzene–clay intercalation compounds
The intercalation of phenol into p-[2-(2-hydroxyethyldimethylammonio)ethoxy]azobenzene–clay (montmorillonite, synthetic saponite and fluor-tetrasilicic mica) intercalation compounds induced by UV irradiation is reported. Phenol was intercalated into the interlayer spaces of the azo dye–fluor-tetrasilicic mica (the cat…
Gold–polyaniline composites : Part II. Effects of nanometer sized particles
The amount of electronic charge transferred between gold particles and polyaniline depends not only on the electron affinity of the two materials but also on the size of the gold particles. As measured by X-ray photoelectron spectroscopy, for particles < approximately 5 nm the binding energy of the electrons is size d…
Effect of Cu Substitution on Thermoelectric Properties of Ge Clathrates
We have prepared polycrystalline n-type Ba8CuxGayGe46−x−y (x=0–5, y=16−3x) clathrate compounds by arc melting and spark plasma sintering techniques and investigated the effect of Cu substitution for Ge on their thermoelectric properties. The Hall carrier concentration for Cu-substituted compounds is almost constant at…
GaS and GaSe nanowalls and their transformation to Ga2O3 and GaN nanowalls
Two-dimensional nanowalls of GaS and GaSe are obtained by thermal exfoliation around 900 degrees C, and transformed to Ga2O3 and GaN nanowalls upon reaction with air and ammonia respectively at 800 degrees C, while maintaining dimensional integrity.
Unexpected promotion of Au/TiO2 by nitrate for CO oxidation
The catalytic activity for Au/TiO2 for CO oxidation can be significantly enhanced by the addition of nitrates and this may relate to the variable catalyst performance observed in many studies.
Fluorescence of Eu2+ in Strontium Oxonitridoaluminosilicates (SiAlONS)
The fluorescence of two divalent europium-activated oxonitridoaluminosilicates, namely SrSi5AlO2N7 and SrSiAl2O3N2, is reported in this work. The powder sample was synthesized by sintering at 1800°C (SrSi5AlO2N7) or 1600°C (SrSiAl2O3N2) for 2 h under 0.5 MPa N2. A single broadband blue-green emission is observed for b…
Hydrogen Absorption into High Strength Bolts under Atmospheric Exposure and Delayed Fracture Susceptibility Evaluation
Hydrogen absorption into high strength steel bolts and its effects on delayed fracture susceptibility have been investigated, by means of thermal hydrogen analysis on exposed bolts and hydrogen permeation tests under atmospheric exposure. Thermal hydrogen analysis on small parts of exposed bolts showed hydrogen locali…
Synthesis and Luminescent Properties of MgIn[sub 2−x]Ga[sub x]O[sub 4]:Eu[sup 3+] Phosphors
As the novel Eu-doped phosphors were synthesized by solid-state method, their characterization and luminescent properties were also investigated. X-ray dirraction results revealed that the ions are well dissolved into the host below . The ions preferred to occupy the distorted octahedral sites in the structure making…
The Phebus Fission Product and Source Term International Programmes
The international Phebus FP programme, initiated in 1988 is one of the major research programmes on light water reactors severe accidents. After a short description of the facility and of the test matrix, the main outcomes and results of the first four integral tests are provided and analysed. Several results were une…
Damping Properties of Ductile Cu-Al-Mn-Based Shape Memory Alloys
The damping property tanφ of Cu-Al-Mn-based alloys, where tanφ is nearly equal to internal friction Q−1, was investigated using a Dynamic Mechanical Spectrometer (DMS). It was found that the dependences of frequency and strain amplitude on tanφ are significantly different between the parent + martensite two-phase and…
Measurement of pH Gradients in the Crevice Corrosion of Iron Using a Palladium Hydride Microelectrode
The study of localized corrosion is hindered by the inability to characterize electrolyte compositions inside crevices and pits during the corrosion process. This paper describes the development of a microelectrode system for in situ monitoring of the pH in artificial crevices and small recesses. This system permits d…
Isochronal Annealing Behavior of Magnesium Alloy AZ31 after Hot Deformation
Annealing behaviors of hot-deformed magnesium alloy AZ31 were studied at temperatures of 373 to 673 K by optical and SEM/EBSD metallographic observation. The hot-deformed alloy had fine-grained structures developed by grain fragmentation due to continuous dynamic recrystallization (cDRX). Temperature dependence of the…
Enhanced mid-infrared transmission through nanoscale metallic coaxial-aperture arrays
Using a single interferometric lithography patterning step along with self-aligned pattern-definition techniques, uniform, large-area metallic coaxial arrays with ~ 100-nm toroidal gaps are fabricated. Enhanced (5x) mid-infrared (4 mum) transmission through these sub-wavelength coaxial arrays is observed as compared w…
Effect of Forging Ratio and Grain Size on Tensile and Fatigue Strength of Pure Titanium Forgings
Pure titanium is expected to be used in high-speed ships in light of its corrosion resistance, high specific strength, ability to reduce ship-dismantling costs, and recyclability. Titanium rudder forgings, each of which is an integrated combination of a rudder plate and a rudder stock, have been used for high-speed sh…
Molecular and electronic structure of square-planar nickel(ii), nickel(iii) and nickel(iii)π-cation radical complexes with a tetradentate o-phenylenedioxamidate redox-active ligand
The molecular and electronic structures of the electron transfer series of four-coordinate square-planar nickel complexes with the ligand o-phenylenebis(N'-methyloxamidate), [NiL]z (z = 2-, 1-, 0), have been evaluated by DFT and TDDFT calculations, and most of their experimentally available structural and spectroscopi…
Disorder, structured diffuse scattering and the transmissionelectron microscope
A review of the application of electron microscopy to disordered materials exhibiting sharp, highly structured diffuse intensity distributions is given from a modulation wave approach perspective. Structurally useful diffraction phenomena such as polarization, overall diffuse distribution shape and pseudo-extinction c…
The Twinning Microstructure and Damping Behavior in Mn–30Cu (at%) Alloy
The twin boundary damping peak and the transformation damping peak constitute the temperature dependent damping behavior in Mn–Cu alloys. In order to observe the effects of twinning microstructure on the twin boundary damping behavior, a Mn–30 at%Cu alloy was finally treated by furnace cooling (FC) and aging after wat…
Inhibitive properties, adsorption and surface study of butyn-1-ol and pentyn-1-ol alcohols as corrosion inhibitors for iron in HCl
The inhibiting effect of several acetylenic alcohols, namely 2-butyn-1-ol, 3-butyn-1-ol, 3-pentyn-1-ol and 4-pentyn-1-ol has been investigated on the corrosion of iron in 1 M HCl. The Tafel extrapolation method, linear polarization resistance and electrochemical impedance spectroscopy illustrate their inhibiting effec…
Fouling During the Use of Seawater as Coolant—the Development of a User Guide
ESDU International of London, UK, has recently published a User Guide [1] 2003. “Engineering Sciences Data Unit”. In Fouling in Cooling Systems Using Seawater, London, , UK: ESDU International Ltd.. ESDU Item 03004 [Google Scholar] on fouling in heat exchange systems using seawater as the coolant. Developed over a per…