Materials Literature
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In marine environments corrosion is exacerbated by formation of destructive biofilms containing sulphate-reducing bacteria, which promote corrosion by forming corrosive species, such as H2S. Corrosion-causing biofilms are often resistant to inactivation by biocides since the biofilm bacteria are protected by a matrix…
In analogy to Zinc-rich coatings technology, Mg-rich primers (MgRPs) have been developed to protect Al alloys, particularly Al 2024-T3. Pigment shape and pigment volume concentration are two important parameters for metal rich coatings and their role in Mg-rich coatings was examined in this report. Two magnesium pigme…
The detailed study of cysteine (Cys) as corrosion inhibitor for copper in nitric acid solution has been performed through weight loss, electrochemical polarization, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM) measurements. The effect of inhibitor concentration, temperature and i…
Abstract The operation of gradient coils typically requires large currents to be driven in resistive copper wires. A major problem in gradient coil design is therefore the correspondingly large Ohmic heating that results, which can severely impact image quality or lead to system failure. Of particular concern is the l…
A Ginzburg-Landau approach to fluctuations of a layered superconductor in a magnetic field is used to show that the interlayer coupling can be incorporated within an interacting self-consistent theory of a single layer, in the limit of a large number of neighboring layers. The theory exhibits two phase transitions-a v…
High-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM) images of electron-transparent samples show dominant atomic number (Z-) contrast with a high lateral resolution. HAADF STEM at low electron energies <30 keV is applied in this work for quantitative composition analyses of InGaAs qua…
Direct carbon fuel cells (DCFCs) have great thermodynamic advantages over other high temperature fuel cells such as molten carbonate fuel cells (MCFCs) and solid oxide fuel cells. They can have 100% fuel utilization, no Nernst loss (at the anode), and the CO2 produced at the anode is not mixed with other gases and is…
In this communication, β-cyclodextrin modified quantum dots were used as a water-soluble "supramolecular" cross-linker (SCL) because of its surface's supramolecular activity. The guest monomer-loaded SCL (mSCL) can be used to copolymerize with water-soluble monomers leading to transparent hybrid supramolecular hydroge…
We investigate the temperature dependence of the spin-resolved unoccupied density of states (DOS) in ferromagnetic ${\text{Co}}_{2}\text{FeAl}$ and ferrimagnetic ${\text{Mn}}_{2}\text{VAl}$ epitaxial films on MgO(100) using x-ray magnetic circular dichroism. We observe an unexpected strong temperature dependence of th…
We have studied the colour centre production in yttria-stabilized zirconia (ZrO(2):Y(3 +)) by heavy ion irradiation in the GeV range using on-line UV-visible optical absorption spectroscopy. Experiments were performed with 11.4 MeV amu(-1) (127)Xe, (197)Au, (208)Pb and (238)U ion irradiations at 8 K or room temperatur…
Abstract The synthesis and characterization of a new hyperbranched PAE with a flexible structure and terminal hydroxyl groups is reported. The influence of PAE in the anionic curing of DGEBA with 1‐methylimidazole was studied. The curing reaction was investigated by DSC and FT‐IR. The covalent incorporation of the mod…
For the first time, octaglycosylated zinc(II) phthalocyanines in which the sugar part is protected by acetyl groups and the deprotected zinc(II) phthalocyanines were synthesized and characterized. The sugars glucose, galactose, lactose, cellobiose, and maltose are anomerically attached either via oxygen or sulfur to t…
We performed model calculations of Raman responses for multiband two-dimensional superconductors. The multiband effects of screening in the ${A}_{1g}$ symmetry channel were investigated analytically and numerically for a band-structure model mimicking angle-resolved photoemission spectroscopy data on iron-pnictide mat…
Size, composition, and pattern formation are crucial elements in the fabrication of functional multicomponent nanoparticles (NPs). Self-assembly techniques provide relevant control over NP size distribution (down to a few nanometers in diameter), but more importantly, such techniques are amenable for practical applica…
Protein fluorescence and small-angle X-ray scattering (SAXS) have been used to monitor effector affinity and conformational changes previously associated with allosteric regulation in rabbit muscle pyruvate kinase (M(1)-PYK). In the absence of substrate [phosphoenolpyruvate (PEP)], SAXS-monitored conformational change…
We characterize the elastic contribution to the surface free energy of a nematic liquid crystal in the presence of a sawtooth substrate. Our findings are based on numerical minimization of the Landau-de Gennes model and analytical calculations on the Frank-Oseen theory. The nucleation of disclination lines (characteri…
This paper reports two new indium tin oxide (ITO)-based nanostructures, namely ITO@carbon core-shell nanowire and jagged ITO nanowire. The ITO@carbon core-shell nanowires (~50 nm in diameter, 1-5 μm in length,) were prepared by a chemical vapor deposition process from commercial ITO nanoparticles. A carbon overlayer (…
Linear and star-shaped polyglycidols were prepared using ethoxy ethyl glycidyl ether (EEGE) as monomer and 3-phenyl-1-propanol and dipentaerythritol as initiator, respectively. These polymers were treated with 2-chloroethylsulfonyl chloride to form reactive vinyl sulfonate end groups. The high reactivity of the vinyl…
The complex ac admittance of a thin film of carbon nanotube/polymer composites depending on both the concentration and the alignment of nanotubes has been studied. The complex ac admittance and the current intensity distribution is numerically calculated using a transfer matrix method, where the discretized mesh model…
The structural evolution of a colloidal crystal fiber during heating and annealing was followed by in situ synchrotron small-angle X-ray scattering. The polymer dispersion (with a particle size of 118 nm) from which the fibers were formed by directed drying contained emulsifier and salt. A cellular structure formed up…