Materials Literature
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A new strategy for the preparation of functional porous carbons is developed via direct, ambient-pressure, thermal pyrolysis of task-specific ionic liquids (ILs). The simple synthesis lies in the synergistic use of the negligible volatility of the ILs and incorporation of the crosslinkable nitrile groups in the anions…
$\text{La}B{\text{O}}_{3}$ ($B=\text{Mn}$, Fe, Co, and Ni) perovskites form a family of materials of significant interest for cathodes of solid oxide fuel cells (SOFCs). In this paper ab initio methods are used to study both bulk and surface properties of relevance for SOFCs, including vacancy formation and oxygen bin…
The distinct synergetic characteristics between each component in inorganic-organic hybrids offer various possibilities to obtain new "smart", high performing materials. Growing interest in this field has largely expanded the content of photochromic materials for the purpose of improving existing photochromic material…
Cross correlation between magnetism and electricity in a solid can host magnetoelectric effects, such as magnetic (electric) induction of polarization (magnetization). A key to attain the gigantic magnetoelectric response is to find the efficient magnetism-electricity coupling mechanisms. Among those, recently the eme…
Two new sets of optical data, i.e., values for the real (ε1) and imaginary (ε2) parts of the complex dielectric constant as well as the energy loss function (ELF) (Im{−1∕ε}), are presented for 16 elemental metals (Ti, V, Fe, Co, Ni, Cu, Zn, Mo, Pd, Ag, Ta, W, Pt, Au, Pb, and Bi) and 1 semimetal (Te) and are compared t…
Increasing attention on metamaterials has been paid due to their exciting physical behaviors and potential applications. While most of such artificial material structures developed so far are based on metallic resonant structures, Mie resonances of dielectric particles open a simpler and more versatile route for const…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTBlock Copolymer Based Nanostructures: Materials, Processes, and Applications to ElectronicsHo-Cheol Kim*, Sang-Min Park, and William D. HinsbergView Author Information IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120* To whom correspo…
The ozonation of glycerol and its main oxygenated derivatives is studied aiming at evaluating the possibility to convert them into valuable products. The direct ozonation of glycerol results into a mixture of its oxygenated derivatives. In some cases the use of ozone to convert them into valuable products proceeds wit…
The in vitro dissolution profiles of four commercial brands of aspirin tablets (one soluble brand of aspirin, A1, and three plain brands of aspirin labeled A2-A4) were assessed using the USP XXI dissolution method. Various dissolution parameters such as percent dissolution in 30 min, dissolution rate constant (k), and…
The effects of fluoride ions scavenger in the liquid phase deposition synthesis of nickel-aluminum layered double hydroxide/carbon (Ni-Al LDH/C) composite have been investigated. Al(NO3)3.9H2O, AlCl3, Al metal plate, and a mixed solution of [Al(NO3)3.9H2O and H3BO3] were employed as F- scavengers. In the case that Al…
The layered perovskite HLaTiO(4) reacts stoichiometrically with LiOH.H(2)O at room temperature to give targeted compositions in the series H(x)Li(1-x)LaTiO(4). Remarkably, the Li(+) and H(+) ions are quantitatively exchanged in the solid state and this allows stoichiometric control of ion exchange for the first time i…
The transmission of light through a colloidal solution of hydrogel nanospheres based on poly(N‐isopropylacrylamide) (PNIPAM) polymer depends critically on the refractive index and random light scattering of the medium. These physical properties of the colloidal medium modify the photoluminescence emission from CdTe qu…
A total of 159 diatom taxa, mostly pennates, under 35 genera, were encountered on the submersed surface of standing dead trees in Lake Kenyir, Malaysia, during one year of sampling in 1995. Their station wise distribution was 101 taxa at the Dam side (site 1) and 145 taxa at the Petang River (site 2), showing 50% more…
The effect of moving environments on the efficiency of corrosion inhibitors is a research topic that has been in continuous development over the recent years. The present work explores the effect of turbulent flow on the electrochemical behavior and efficiency of a triazole-based corrosion inhibitor (3-amino-1,2,4, tr…
Carbon dioxide corrosion of carbon steel in brine has been a recognized problem in oil production and it is becoming more common with the use of CO2-flooding as an oil recovery technique. The presence of acetic acid is systematic in oil fields, however, its role in corrosion has not been well-recognized and it is stil…
The influence of nanoscopic magnetoelectronic phase separation on electrical transport in La1−xSrxCoO3 crystals is reported. It is demonstrated; (i) that the T=0 metal-insulator transition can be quantitatively understood using double exchange-modified percolation theory, and, (ii) that the onset of a phase-pure low T…
We propose a microscopic quantum-mechanical model for describing the nonstochastic dynamics of the nanoscopic light-emissive quantum dot. The model is extended beyond a single quantum dot to consider the Coulomb repulsion between neighboring quantum dots in the ionic states caused by the random fluctuations of charge…
Photocatalytic oxidation of aromatic aldehydes to related carboxylic acids was investigated with molecular oxygen in the presence of Preyssler anion, with formula [NaP5W30O110]14 −. It was observed that H14[NaP5W30O110] could catalyze the oxidation of aromatic aldehydes by molecular oxygen under homogeneous conditions…
We, the undersigned, would like to draw the attention of the nanotoxicology community to how the term “nanoparticles” is being somewhat indiscriminately used, especially in the titles of scientific...
Structural, microstructural, and dielectric studies have been carried out on Pr-modified PbTiO3. A comparative analysis with La-modified PbTiO3 suggests that for chemical modification by same amount, the Pr-modified system has larger tetragonal strain and Curie point. No clear feature of relaxor ferroelectric state is…