Materials Literature
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Ductile cast iron samples were austenitised at 900°C and subjected to two types of austempering called as conventional austempering and two-step austempering. Five different temperatures, 280, 300, 320, 350, 380 and 400°C, with an austempering time of 2 h, were chosen for conventional austempering. For two-step austem…
The experimental charge density distribution in aminomethylphosphonic acid has been determined from X-ray diffraction and its topological features have been analyzed. The results have shown that the P-O bonds are highly polarized, moreover the P-OH bond is weaker than the bonds to unprotonated O atoms. These facts hav…
We have successfully developed and demonstrated broadband emission Nd-doped mixed scandium garnets based on laser ceramic technology. The inhomogeneous broadening of Nd(3+) fluorescence lines results in a bandwidth above 5 nm that is significantly broader than that for Nd:YAG and enables subpicosecond mode-locked puls…
In this study we present a morphological approach in observing the interaction of cationic magnetic nanoparticles with A-549 cells (human lung adenocarcinoma). Under our experimental conditions, nanoparticles easily penetrated cells and were observed in vivo, using bright light microscopy. In fixed cells, nanoparticle…
The interfacial structures and solvation free energies of gold nanoparticles passivated by self-assembled monolayer (SAM) of fluorinated alkanethiols in supercritical CO(2) (scCO(2)) have been studied by using classical molecular dynamics simulation. A fragment-based free-energy perturbation approach was developed her…
Several aspects of the general theory for the critical states of a vortex lattice and the magnetic flux dynamics in type-II superconductors are examined by a direct variational optimisation method and widespread physical principles. Our method allows to unify a number of conventional models describing the complex vort…
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…