Materials Literature
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The well-known voltamperometric method has only been used so far in the identification of symmetric hysteresis cycles for reasons that are explained in the main text. This paper extends the sensorless measurement method to the characterization of asymmetric loops, without losing the main advantage of this technique, i…
Abstract CO 2 corrosion inhibition of N80 steel in liquid single‐phase and liquid/particle two‐phase flow by 2‐undecyl‐1‐hydroxyethyl imidazoline (HEI‐11) and 2‐undecyl‐1‐hydroxyethyl‐1‐hydroxyethyl quaternary imidazoline (HQI‐11) was investigated using weight loss, potentiodynamic polarization, EIS, and scanning elec…
Abstract Grade 316L is a type of austenitic stainless steel with ultra‐low carbon content and it exhibits superior corrosion resistance. However, pitting is always observed in 316L steel when it is exposed to media containing halide ions. In the present study, we found that in the presence of acetate acid (HAc) contai…
In this paper, the off-morphotropic-phase-boundary 74(Bi1/2Na1/2)TiO3–20.8(Bi1/2K1/2)TiO3–5.2BaTiO3 ceramics were fabricated at different sintering temperatures. It was found out that as the sintering temperature increases, the volatilization of the A-site elements is aggravated, thus generating the oxygen vacancies;…
Abstract The new clathrate‐II K 8.6(4) Ge 136 has been synthesized by mild oxidation of K 4 Ge 9 in the ionic liquid n ‐dodecyltrimethylammonium chloride (DTAC)/AlCl 3 at 300 °C and subsequent annealing at 370 °C. Refinement of the crystal structure from X‐ray powder diffraction data revealed the composition K 8.6(4)…
A magnetic-ferroelectric film heterostructure with a large electric field tuning of the ferromagnetic resonance (FMR) mode was fabricated. Pulse laser deposited 30 nm thick Pt electrodes and 3 μm thick barium strontium titanate films on Nb-doped strontium titanate substrates were capped with an unbonded 200 μm thick s…
Abstract We investigate the influence of silica sol addition on the ceramic coatings of Mg–Li alloy by plasma electrolytic oxidation (PEO) in an alkaline silicate electrolyte. Scanning electron microscopy, X‐ray diffraction, X‐ray photoelectron spectroscopy, and energy dispersive spectroscopy are employed to character…
The effect of oxygen vacancies on the elastic properties of BaCe0.9Y0.1O3−δ is studied by measuring the complex Young’s modulus between 80 and 850 K varying the content of O vacancies from 0 to nearly 0.05. The Young’s modulus measured at a fixed temperature above 300 K may change by more than 20% but this is due to a…
Although the positive effect of nano-fillers is well known, delivering a quality nanocomposite consistently is far from maturity. The challenge primarily comes from the dispersion of nanoparticles, especially at high particle loading. Due to the dispersion problem, the advantage of nano reinforcement has not been full…
Small copper clusters embedded in argon shells were obtained using the pick-up technique. The clusters were analyzed using X-ray absorption near-edge spectroscopy (XANES) measured at the Cu L 23 -edge. Theoretical interpretation of the experimental spectra has been performed using full-potential finite difference meth…
Definitive X-ray crystallographic evidence is obtained for a single hole (or a polaron) to be uniformly distributed on the three equivalent 1,2-dimethoxybenzenoid (or veratrole) rings in the hexamethoxytriptycene cation radical. This conclusion is further supported by electrochemical analysis and by the observation of…
The exchange coupling in a structuraly characterized Cu(II)2 complex is analyzed to highlight the role of H bonds in the generation of efficient magnetic interactions. The interest for complementary insights which are not accessible through DFT calculations (Desplanches, C. et al. J. Am. Chem. Soc. 2002, 124, 5197) ha…
Density-functional theory has been used to model the interactions between ceria(111) and CO adsorbed on platinum in order to provide insights into the mechanism behind the water−gas shift reaction on this material. Morphological studies on ceria show the presence of various defect sites, both cerium and oxygen vacanci…
Pyrrole-imidazole polyamides are DNA-binding molecules that are programmable for a large repertoire of DNA sequences. Typical syntheses of this class of heterocyclic oligomers rely on solid-phase methods. Solid-phase methodologies offer rapid assembly on a micromole scale sufficient for biophysical characterizations a…
Ceria-based oxides are of interest as electrolyte and electrode materials in intermediate-temperature solid-oxide fuel cell (SOFCs). A sol−gel strategy has been developed for the production of mesoporous, nanostructured, single phase Ln 0.1 Ce 0.9 O 2, Ln = La, Y, Sm, Gd, Dy thin films. The ceria-based mesoporous thin…
We investigate carbon nanotube field effect transistors (CNFETs) with aluminum oxide (Al2O3) passivated contacts for NO2 detection. For the CNFETs, consisting of one individual pristine single walled carbon nanotube (SWNT), the measurements indicate a strong influence of adsorbed NO2 gas molecules on the exposed CNFET…
In a solution crystallization process, dissolved molecules that are structurally related to the solute (here termed “imposters”) can exert effects on the shape of the solute crystal. We propose a new model for the effect of imposters based on a mechanistic description of the way a molecular imposter affects a growing…
Local structure analysis of Cu and Ge atoms in the negative thermal expansion material Mn3Cu0.7Ge0.3N was conducted using x-ray absorption fine structure measurements. The temperature dependence of the interatomic distance was found to reflect the macroscopic negative thermal expansion both for Cu–Mn and Ge–Mn shells,…
Joule-heating-induced failure of individual multiwalled boron nitride (BN) nanotubes is investigated in a high-resolution transmission electron microscope (TEM) equipped with a scanning tunneling microscope (STM) unit. Direct observation of the failure process indicates that it occurred via thermal decomposition of tu…
In this paper, preparation and optical properties of novel transparent Al-doped zinc oxide (AZO)/epoxy nanocomposites were reported. First, AZO precursor was synthesized via the homogeneous precipitation method and AZO nanoparticles were obtained by calcination of the precursor at different temperatures. Transparent A…