Materials Literature
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Single-crystal copper nanowires (Cu NWs) have been synthesized by a series of simple hydrothermal methods. In this study, we will give several soft synthesis routes to fabricate low-dimensional nanocrystals with focus on various kinds of nanowires. Especially, Cu NW products with diameters around 6–10 nm and lengths b…
OBJECTIVE: To evaluate the efficacy and safety of ferumoxytol for use in magnetic resonance angiography (MRA) of the vasculature. DATA SOURCES: Literature was accessed through MEDLINE (1946-September 2011) and EMBASE (1947-September 2011) using the terms ferumoxytol, magnetic resonance imaging and angiography, blood p…
Electron paramagnetic resonance (EPR), electron-nuclear double resonance (ENDOR), and thermoluminescence (TL) are used to characterize the primary electron and hole trapping centers in a lithium tetraborate (Li2B4O7) crystal doped with Ag. Three defects, two holelike and one electronlike, are observed after exposure a…
Non-conventional liquid crystals such as oligomers formed by covalent tethering of two to several anisometric (mesogenic) cores through flexible spacer(s) represent a fascinating and emerging class of functional soft materials. Over the last two decades or so, a variety of such motifs have been accomplished to illustr…
The effect of five different chemical treatments (HNO3, H2SO4, H2O2, HNO3 + H2SO4 and HNO3 + HCl) on the homogeneity, surface chemistry, structure and dispersibility in water of iron- and iron oxide-filled multi-walled carbon nanotube samples was evaluated by X-ray diffractometry (XRD), Raman, UV-Visible and X-ray pho…
Air permeability is one of the most important properties of textile materials that ensure their comfort. For many materials for technical applications (filters, sails, vacuum cleaners, parachutes, etc.), this is one of the main properties that determine their quality. The air permeability of woven textile fabrics depe…
We report magnetic hysteresis loops in a wide temperature range (4-700 K) for silica-coated barium ferrite BaFe12O19 nanoparticles. The saturation magnetization Ms and the first magnetic anisotropy constant K are determined simultaneously from the magnetic hysteresis loop using the law of approach to saturation. It is…
We present a novel susceptometer with a particularly small spatial footprint and no moving parts. The susceptometer is suitable for use in systems with limited space where magnetic measurements may not have been previously possible, such as in pressure cells and rotators, as well as in extremely high pulsed fields. Th…
We report the synthesis and characterization of two cationic iridium(III) complexes with dendritic carbazole ligands as ancillary ligands, namely, [Ir(ppy)(2)L3]PF(6) (1) and [Ir(ppy)(2)L4]PF(6) (2), where L3 and L4 represent 3,8-bis(3,6-di-tert-butyl-9H-carbazol-9-yl)-1,10-phenanthroline and 3,8-bis(3',6'-di-tert-but…
Abstract Self‐assembling and self‐organizable dendrons, dendrimers, and dendronized polymers produce chiral supramolecular architectures that have been developed as biological mimics. Here we review our work on the self‐assembly of homochiral, heterochiral, and racemic dendritic dipeptides, and address one of the most…
A plasma electrolytic oxidation (PEO) ceramic coating F-B-A with excellent compactness was prepared on magnesium alloy AZ91D in acidic KF solution with dihydric phosphate by applying a bi-polar pulse voltage. For comparison, two other coatings F-M and F-M-A were prepared in the same solution with and without addition…
The molecular structures of various silica gels are compared using 29 Si NMR and laser Raman spectroscopy. When gels are deposited onto a porous organic resin from tetra ethyl orthosilicate, TEOS, at acidic or basic conditions, their appearance and physical properties show dramatic differences. It is demonstrated that…
In this paper, we examine the lattice thermal conductivity and dominant phonon scattering mechanisms of graphene. The interatomic interactions are modeled using the Tersoff interatomic potential and perturbation theory is applied to calculate the transition probabilities for three-phonon scattering. The matrix element…
Bubble dynamics in water close to the tip of an ultrasonic horn (∼23 kHz, 3 mm diameter) have been studied using electrochemistry, luminescence, acoustics, light scattering, and high-speed imaging. It is found that, under the conditions employed, a large bubble cluster (∼1.5 mm radius) exists at the tip of the horn. T…
In the present review, we discuss the most significant recent developments in the field of nanoporous membranes based on liquid crystalline lyotropic and thermotropic polymer networks.
Optical selection rules for one-dimensional graphene nanoribbons are explored based on the tight-binding model. A theoretical explanation, through analyzing the velocity matrix elements and the features of the wavefunctions, can account for the selection rules, which depend on the edge structure of the nanoribbon, i.e…
Selective catalytic reduction (SCR) is coming into worldwide use for diesel engine emissions reduction of on- and off-highway vehicles. These applications are characterized by broad operating range as well as rapid and unpredictable changes in operating condition. Significant nonlinearity, input, and output constraint…
Magnesium (Mg) alloys have been demonstrated to be potential orthopedic implants due to their biodegradability in vivo. To enhance its corrosion resistance and improve its osteogenesis, β-tricalcium phosphate (β-TCP) was coated on a Mg alloy (Mg-3AI-1Zn) by phosphating process. In vitro, the human osteosarcoma cell li…
A general concept of the symmetry transformation of a material during its thermal expansion and final polymorphic transition is proposed based on numerous experimental data. Within this concept, the atomic nature of the transformation of the crystal structure with a change in temperature is considered. Particular atte…
A systematic study on the deformation mechanisms of molybdenum (Mo) nanowires (NWs) was conducted using molecular dynamics simulations. Both axial orientation and wire thickness were found to play important roles in determining the deformation pathways. In the NWs with orientation 〈110〉/{111}, full dislocation plastic…