Materials Literature
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The central quantity of density functional theory is the so-called exchange-correlation functional. This quantity encompasses all non-trivial many-body effects of the ground-state and has to be approximated in any practical application of the theory. For the past 50 years, hundreds of such approximations have appeared…
Fashioned through billions of years of evolution, biological molecular machines, such as ATP synthase, myosin, and kinesin, use the intricate relative motions of their components to drive some of life's most essential processes. Having control over the motions in molecules is imperative for life to function, and many…
In surgical repair for heart or vascular disease, it is often necessary to implant conduits or correct tissue defects. The most commonly used graft materials to date are (a) artificial grafts; (b) autologous tissues, such as pericardium and saphenous vein; (c) allografts; and (d) xenografts. However, none of these fou…
We have demonstrated heterogeneous photocatalytic degradation of microcystin-LR (MC-LR) by visible light activated carbon doped TiO(2) (C-TiO(2)) nanoparticles, synthesized by a modified sol-gel route based on the self-assembly technique exploiting oleic acid as a pore directing agent and carbon source. The C-TiO(2) n…
We report the solution-phase synthesis and surface processing of ~2-5 μm long single-crystalline IV-VI tin(II) sulfide (SnS) ultrathin nanoribbons, with thicknesses down to 10 nm, and their use in single nanoribbon based photodetectors. The SnS nanoribbons grow via a metastable-to-stable phase transition from zinc ble…
Sustainable plasmonic photocurrents are generated by gold and silver nanoparticles, located at a TiO2/hole conductor interface. The spectral photocurrent response closely follows the surface plasmon absorption bands of the metal particles. A simple nanoparticle self-assembly method for the solar cell fabrication is pr…
Commercial flakes of graphite were prepared into functionalized graphene oxide (GO) by chemical treatment. After the exfoliation and intercalation of graphene into functionalized graphene oxide that formed stable colloidal dispersion in polar aprotic solvent, the reduction process was undertaken by continuous stirring…
With the advent of high-flux density permanent magnets based on rare earth elements such as neodymium (Nd) in the 1980s, permanent magnet-based electric machines had a clear performance and cost advantage over induction machines when weight and size were factors such as in hybrid electric vehicles and wind turbines. H…
Materials engineering plays a key role in the field of energy storage. In particular, engineering materials at the nanoscale offers unique properties resulting in high performance electrodes and electrolytes in various energy storage devices. Consequently, considerable efforts have been made in recent years to fulfill…
Gold nanorods have received much attention due to their unique optical and electronic properties which are dependent on their shape, size, and aspect ratio. This article covers in detail the synthesis, functionalization, self-assembly, and sensing applications of gold nanorods. The synthesis of three major types of ro…
Thermal invisibility through geometrical transformation can be achieved; however, the required materials would be inhomogeneous and thermally anisotropic. The difficulty in manufacturing materials that are inhomogeneous and thermally anisotropic in the desired way, has been a major obstacle in the fabrication of a the…
The thermal oxidation of submicron metallic Zn particles was studied as a method to form nanostructured ZnO films. The particles used for this work were characterized by electron microscopy, x ray diffraction, and thermal analysis to evaluate the Zn-ZnO core shell structure, surface morphology, and oxidation character…
Electrospinning collagen with a synthetic polymer has been frequently investigated as a method of fabricating composite micro and nanofibers for tissue engineering applications. Using trifluoroacetic acid as a solvent for collagen and poly(L-lactic acid) (PLLA), electrospun fibers were well formed, and the filament su…
We have studied the luminescence of calcites from phlogopite-calcite veins, marbles, leucogranites, apatite-calcite ores, and carbonatites in the spectral range 300–800 nm under excitation with nanosecond electron pulses at an electron beam current density of ∼10 A/cm 2 . All of the calcite varieties have a fast emiss…
The structure of porous silicon carbide membranes that peeled off spontaneously during electrochemical etching was studied. They were fabricated from n-type 6H SiC(0001) wafers by a double-step electrochemical etching process in a hydrofluoric electrolyte. Nanoporous membranes were obtained after double-step etching w…
Both charged colloidal suspensions and complex (dusty) plasmas represent classical many-body strongly coupled Coulomb systems. Here we discuss their basic properties and focus on their heterogeneous crystallization from an undercooled melt. In particular, a model with different mobilities is proposed which is realizab…
For the first time, bis[octakis-(2,2,3,3-tetrafluoropropoxy)phthalocyaninato] rare-earth metal(III) double-decker phthalocyanine complexes (Pc 2 Sm, Pc 2 Eu, Pc 2 Gd, Pc 2 Dy and Pc 2 Lu) are synthesized. The new phthalocyanine complexes are characterized using mass, FT-IR and UV-vis spectroscopic techniques as well a…
Spaltung auf Kommando: Signalwege haben oft eine wichtige Raum-Zeit-Komponente, die sich am besten mit lichtaktivierbaren Reagentien untersuchen lässt. Drei separate photolabile Einheiten, die auf Licht unterschiedlicher Wellenlänge (360, 440 bzw. 560 nm) reagieren, wurden synthetisiert und geprüft. Das Dreifarbensyst…
A new inhibitor—N-carbonyl piperazine aimed at anticorrosion of high protective 13Cr steel was synthesized by electrochemistry together with ionic liquid. Its molecule structure was analyzed by gas chromatography/mass spectrometry and infrared spectroscopy. On that base, the inhibition mechanism of N-carbonyl piperazi…
First-principles density-functional calculations are performed to investigate the thermal transport properties in graphene nanoribbons (GNRs). The dimensional crossover of thermal conductance from one to two dimensions (2D) is clearly demonstrated with increasing ribbon width. The thermal conductance of GNRs of a few…