Materials Literature
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Magnetic nanoparticles are attractive targets owing to their unique characteristics that are not shared by bulk materials. Magnetic particles, ranging from nanometer-sized to 1 microm in size, are being used in an increasing number of medical applications. The important properties of magnetic particles for medical app…
Phase Change Memory (PCM) has emerged as an attractive candidate for next-generation non-volatile memory devices. For these applications, reliability is determined by the ability to retain the state of data in the device and support a specified number of re-writes without failure. In PCM technologies, retention is lim…
The Pd(I) dimer [Pd(μ-Br)( t Bu 3 P)] 2 is one of the best third-generation cross-coupling catalysts for carbon–carbon and carbon–heteroatom coupling reactions. Information on its characterisation and handling are presented, including its decomposition mechanism in the presence of oxygen. The catalytic activity of [Pd…
The advantages and applications of chalcogenide glass (ChG) thin film photoresists for grayscale lithography are demonstrated. It is shown that the ChG films can be used to make ultrathin (~600 nm), high-resolution grayscale patterns, which can find their application, for example, in IR optics. Unlike polymer photores…
The possibility of increasing the tree inception voltage for the super clean cross-linked polyethylene of today by adding an active species, a voltage stabilizer, has been questioned. However, this paper will show that this is possible and that the increases achieved are significant. A comparison was also made with th…
Various materials have been found to “catalyze” carbon nanotube growth in chemical vapor deposition (CVD) when they become nano-sized particles. These involve not only metals, such as Pd, Pt, Au, Ag, and Cu, but also semiconductors, such as Si, Ge, and SiC. Alumina and diamond nanoparticles also produce carbon nanotub…
A magnetic loading technique was used to study the strength of pure, annealed, and cold-rolled polycrystalline tantalum under planar ramp loading at strain rates of ∼106/s. Both the initial yield strength and the flow strength after compression to peak loading stresses of 18 GPa were determined. For sample thicknesses…
diagnosis and treatment of disease
The hydrothermal reactions of calcium, strontium, and barium with l-, meso-, and d,l-tartaric acid were examined from room temperature to 220 degrees C. We report the synthesis of 13 new phases and crystal structures of 11 alkaline earth tartrates, including an unusual I(3)O(0) framework, [Ba(d,l-Tar)] (Tar = C(4)H(4)…
Thermal transport properties of isotopic-superlattice graphene nanoribbons with zigzag edge (IS-ZGNRs) are investigated. We find that by isotopic superlattice modulation the thermal conductivity of a graphene nanoribbon can be reduced significantly. The thermal transport property of the IS-ZGNRs strongly depends on th…
Abstract The nature of component layers of mixed-layer illite-smectite and their possible evolution in the course of illitization have been debated since the 1960s. The present study is a new attempt to solve these problems, using samples collected from diverse geological formations around the world. Twenty three puri…
The kinetic properties of the self-assembly of hydrophilic Keplerate-type polyoxometalate (POM) {Mo(72)Fe(30)} macroanions into single-layer, vesicle-like blackberry structures in solutions were monitored by the static and dynamic laser light scattering techniques. In the presence of additional electrolytes, an obviou…
Abstract A proton conducting ceramic fuel cell (PCFC) operating at intermediate temperature has been developed that incorporates electrolyte and electrode materials prepared by flash combustion (yttrium‐doped barium cerate) and auto‐ignition (praseodymium nickelate) methods. The fuel cell components were assembled usi…
Cupric oxide—chitosan nanocomposite was prepared in aqueous solution. Copper ions were adsorbed into the chitosan mainly by chelation to form copper-loaded chitosan. Copper-loaded chitosan was reduced by using sodium hydroxide at specific pH. Copper oxide nanoparticle-loaded chitosan was formed by oxidation of Cu(OH)…
Cancer is the second leading cause of death in the world. Radiolabeled nanocarriers or nanoparticles can be designed and used for cancer diagnostic and therapeutic purposes when tagged with appropriate radionuclides. Current progress in nanotechnology and nanomedicine has exploited the possibility of designing tumor-t…
With the existence of amino groups, chitosan (CS) possesses positive charge, so it can self-assemble with tripolyphotspate (TPP) possessing negative charge via ionic gelation. We here synthesized CS/TPP nanoparticles, and then characterized it with the infrared spectra (IR) and scanning electron microscope (SEM) and t…
This work reports the study, via the combination of Rutherford backscattering spectrometry and channeling, x-ray diffraction, and transmission electron microscopy experiments, of the damage formation in cubic yttria-stabilized zirconia single crystals irradiated with medium-energy (4 MeV) heavy (Au) ions. The damage b…
We perform numerical simulations of a shear flow over a periodically patterned substrate with entrapped gas bubbles. A diffuse-interface model is employed to handle the liquid-gas interface deformation and the three-phase contact line. Depending on the shear rate and the pattern geometry, four flow regimes are observe…
The objective of this article is to review the current knowledge about nephrogenic systemic fibrosis (NSF) and how to prevent it. More than 300 cases of NSF in patients with severe chronic renal insufficiency or acute renal failure or in patients undergoing dialysis have been reported in the peer-reviewed literature,…
Abstract Since the first reported publications about their possible application for corrosion protection, conducting polymers are discussed as promising candidates for a new generation of corrosion control coatings. However, although research has started about three decades ago and certainly about a thousand publicati…