Materials Literature
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We present an experimental and numerical investigation of the polarization anisotropy of the zero-order backdiffracted light from three-dimensional thin-film photonic crystals assembled from colloidal spheres. In particular, we compare simulations of reflectance spectra from perfectly ordered fcc lattice of spheres wi…
Heart insufficiency remains the leading cause of death despite pharmacological and interventional therapy as well as primary and secondary prevention. Laboratory research on cardiac repair implementing stem cells and progenitor cells has raised great expectations as well as controversies. The potential of diverse prog…
It is well established that inorganic arsenic induces neurotoxic effects and neurological defects in humans and laboratory animals. The cellular and molecular mechanisms of its actions, however, remain elusive. Herein we report the effects of arsenite (NaAsO2) on primary cultures of rat astrocytes. Cells underwent ind…
Radical pairs, polarons, and fullerene anion radicals photoinduced by photons with an energy of 1.98−2.73 eV in bulk heterojunctions formed by poly(3-hexylthiophene) (P3HT) and poly(3-dodecylthiophene) (P3DDT) with [6,6]-phenyl C 61 -butyric acid methyl ester (PCBM) and 2-(azahomo[60]fullereno)-5-nitropyrimidine (AFNP…
By means of multiscale theoretical techniques, we examined the ability of Mg 2+ to enhance H 2 storage in metal−organic frameworks. Ab initio calculations showed that Mg 2+ increases more than five times the interaction energy between the hydrogen molecules and the new proposed organic linker of the IRMOF-10, reaching…
The structure of 55-atom Li-Na and Na-K nanoalloys is determined through combined empirical potential (EP) and density functional theory (DFT) calculations. The potential energy surface generated by the EP model is extensively sampled by using the basin hopping technique, and a wide diversity of structural motifs is r…
By combining the iridium(III) ppy-type complex (Hppy=2-phenylpyridine) with a square-planar platinum(II) unit, some novel phosphorescent oligometallaynes bearing dual metal centers (viz. Ir(III) and Pt(II)) were developed by combining trans-[Pt(PBu(3))(2)Cl(2)] with metalloligands of iridium possessing bifunctional pe…
This paper examines the factors that influence the quality of nanostructures fabricated by sectioning thin films with an ultramicrotome ("nanoskiving"). It surveys different materials (metals, ceramics, semiconductors, and conjugated polymers), deposition techniques (evaporation, sputter deposition, electroless deposi…
Atmungsaktiv: Nach DFT-Rechnungen wird die außergewöhnliche, thermisch induzierte Dichteänderung der Metall-organischen Gerüststruktur MIL53(Al) durch konkurrierende kurz- und langreichweitige Wechselwirkungen sowie entropische Faktoren bestimmt. Wie die gezeigte Struktur andeutet (C grün, Al cyan, O rot, H weiß), sta…
Repair of orbital bone defects caused by trauma, infection or cancer is a continuous challenge in reconstructive surgery. Few studies have reported the application of tissue engineering for the repair of orbital bone defects in large animal models. Thus, we investigated the effects of tissue-engineered bone enhanced b…
In this study, we present a novel coating with Zn‐releasing ability that promotes osseointegration of Ti6Al4V implants. The coatings were prepared by a sol–gel technique, and nanosized Zn‐containing β‐tricalcium phosphate particles were added to the Ca(NO 3 ) 2 –P 2 O 5 –HPF 6 sol system to incorporate Zn ions into fl…
The growth and assembly of TiO 2 nanostructures with enhanced charge transfer and light harvesting have attracted much attention for fabricating highly efficient dye-sensitized solar cells. In this study, we report an environmentally friendly and easy synthetic route for fabrication of mesostructured anatase TiO 2 by…
We investigated the controlling mechanism of preferential orientation in polycrystalline silicon (poly-Si) on glass substrate by Al-induced crystallization using an in situ monitoring system and electron backscattered diffraction (EBSD) measurements. Poly-Si film with (111)-preferential orientation was obtained by the…
Unsymmetrical dimethylchlorosilyl-substituted α,α′-dialkylquater-, quinque-, and sexithiophenes were designed and successfully synthesized by a combination of Kumada and Suzuki cross-coupling reactions followed by hydrosilylation. Optimization possibilities of the hydrosilylation of low-soluble linear oligothiophenes…
Silicon monoxide (SiO) is a promising candidate for anodes in lithium rechargeable batteries, because of its large capacity. The initial irreversible reaction and still dissatisfactory capacity retention during cycling, however, hinder its practical application. A nanostructured SiAl 0.2 O composite material has been…
From the flow properties of dense granular suspensions on an inclined plane, we identify a mesoscopic length scale strongly increasing with volume fraction. When the flowing layer height is larger than this length scale, a diverging Newtonian viscosity is determined. However, when the flowing layer height drops below…
Multipole refinements of larger organic molecules have so far been limited to a few exceptional cases. We report an investigation of the detailed experimental electron-density distribution (EDD) of roxithromycin, a macrolide antibiotic consisting of 134 atoms. Although the experimental multipole refinement on high-res…
The microwave dielectric properties and microstructure of Mg 3 B 2 O 6 ceramics with the addition of 0–5 wt% Mg 2 B 2 O 5 were investigated. Scanning electron microscopy of the Mg 3 B 2 O 6 ceramics sintered at 1310°C revealed the presence of anisotropic, exaggeratedly grown grains with a crystallographic fault that e…
The properties of the phase shift of wave reflected from one-dimensional photonic crystals consisting of periodic layers of single-negative (permittivity- or permeability-negative) materials are demonstrated. As the incident angle increases, the reflection phase shift of TE wave decreases, while that of TM wave increa…
2 H and 7 Li MAS NMR spectroscopy have been applied to characterize the surface and bulk hydroxyl groups and Li + sorption on the iron oxyhydroxide akaganeite (β-FeOOH), a common soil mineral with a large surface area and uptake capacity for toxic cations and anions. The formation of both inner and outer-sphere comple…