Materials Literature
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Flowerlike Ni−Fe alloy nanostructures composed of nanorods have been synthesized via a facile hydrothermal approach at relatively low temperature (100 °C) independent of surfactants or external magnetic field. The concentrations of NaOH and FeCl 3 play a crucial role in determining the morphology of the Ni−Fe alloy vi…
Due to the biocompatibility of poly(ethylene glycol) (PEG), PEG-based hydrogels have attracted considerable interest for use as biomaterials in tissue engineering applications. In this work, we show that PEG-based hydrogels prepared by photopolymerization of PEG macromonomers functionalized with either acrylate or acr…
Abstract Metall‐organische Gerüste bieten als eine Klasse von hochgradig porösen Materialien vielfältige Möglichkeiten für biologische und medizinische Anwendungen. Durch die große Bandbreite an chemischen Zusammensetzungen sind toxikologisch zulässige Rezepturen realisierbar, und durch die hohe Funktionalität der MOF…
Mehr als ein Metall enthalten die mesoporösen Materialien MGa2O4 (M=Zn, Ni, Co), die durch Ionenaustausch aus kolloidalem mesoporösem NaGaO2 zugänglich sind (siehe Schema mit TEM-Bildern). Weil diese Vorstufe zugleich als Templat wirkt, spart man einen Templatentfernungsschritt ein.
An efficient and easily scalable transformation of alcohols and aldehydes to carboxylic acids and nitroalkane derivatives to the corresponding carbonyls and carboxylic acids using permanganate as the oxidant within a continuous flow reactor is reported. Notably, the generation and downstream processing of MnO(2) slurr…
We investigate the use of nanopatterned metallic films as transparent conductive electrodes in optoelectronic devices. We find that the physics of nanopatterned electrodes, which are often optically thin metallic films, differs from that of optically thick metallic films. We analyze the optical properties when perform…
High Resolution Image Download MS PowerPoint Slide Click chemistry offers highly selective and orthogonal reactions that proceed rapidly and under a variety of mild conditions with the opportunity to create highly defined and multifunctional materials. This work illustrates a strategy where step-growth networks are fo…
Dye-sensitized solar cells employing mesoporous TiO(2) beads have demonstrated longer electron diffusion lengths and extended electron lifetimes over Degussa P25 titania electrodes due to the well interconnected, densely packed nanocrystalline TiO(2) particles inside the beads. Careful selection of the dye to match th…
The class of highly porous materials called metal-organic frameworks offer many opportunities for applications across biology and medicine. Their wide range of chemical composition makes toxicologically acceptable formulation possible, and their high level of functionality enables possible applications as imaging agen…
In this paper the results of research of influence of laser emission on electrophysical and structural parameters of SiO<sub>2</sub>/Si system are given. Research samples were irradiated with optical fiber YLP-laser (λ=1,06 μm) with 250ns pulse length. Power of emission in impulse was (2-4) - 7,13 Wt/sm<sup>…
We investigate the critical steps in the formation of Ca(BH 4 ) 2 starting from CaH 2 −MgB 2 thin films. As a first step, thin films of CaH 2 are successfully deposited by reactive sputtering using a mixture of Ar/H 2 as sputter plasma. The films are analyzed by transmission electron microscopy (TEM) and by optical sp…
A highly durable optical disk has been developed for data archiving. This optical disk uses tellurium as the write layer and carbon as a dielectric and oxidation prevention layer. The sandwich style CTeC film was deposited on polycarbonate and silicon substrates by plasma sputtering. These films were then characterize…
A diamagnetic oxo-bridged chromium(V) complex, [Cp*Cr(O)(CF 3 )] 2 O, has been synthesized through exposure of a hexane solution of Cp*Cr(CO) 3 (CF 3 ) to air in the presence of light and characterized by a single-crystal X-ray diffraction study. DFT calculations have been employed to probe its structure and propertie…
The corrosion protective behaviour of bis-[triethoxysilylpropyl]tetrasulphide (BTESPT) silane film formed by partly hydrolysed BTESPT on AZ31 Mg alloy was investigated. Fourier transform infrared spectroscopy (FTIR) was used for structural characterisation of the silane film. Scanning electron microscope (SEM) and ene…
Magnesium aluminate spinel (MgAl2O4) is an excellent castable refractory product due to its high temperature thermal, chemical and mechanical properties. Alumina spinel castables are produced by addition of synthetic spinel or in situ spinel formation during the firing process. In the first part of the experimental st…
In soft matter systems the local displacement field can be accessed directly by video microscopy enabling one to compute local strain fields and hence the elastic moduli in these systems using a coarse-graining procedure. We study this process in detail for a simple triangular, harmonic lattice in two dimensions. Coar…
With a specific pore-filling process, a solvent-annealing process, graphite-like nanotubes can be fabricated from poly(acrylonitrile) (PAN) pore-filling anodic aluminum oxide templates. The molecular orientation of anisotropic PAN chains was induced by solvent annealing due to capillary filling so as to achieve approp…
The present paper reports the investigation of the microstructure distribution of squeeze cast AZ91D alloy. The microstructure of squeeze cast AZ91D alloy is not uniform and is composed of four zones, which are chilled layer, segregation zone, pressured crystallisation area and hot spot area respectively. Moreover, in…
PURPOSE: To compare signal-enhancing properties of the high relaxivity Gd chelates P1152 and Gd-BOPTA for contrast-enhanced MR angiography (CE-MRA) in rabbits at 1.5 Tesla (T) and 3.0T. MATERIALS AND METHODS: Three-dimensional CE-MRA of the abdominal vasculature was performed in six rabbits using both contrast agents…
The described encapsulated thermoelectric (TE) module consists of a vacuum-tight stainless-steel container with dimensions of 55 mm × 50 mm × 11 mm in which a SiGe or BiTe TE module is placed. This construction enables maximum performance and durability because: (1) the thermal expansion mismatch between the hot and c…