Materials Literature
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Abstract The microspheres, nanowires, and butterfly-like structures of poly(9,9-dihexylfluorene) were fabricated by a novel approach, namely, the nonsolvent vapor method (NSVM). The controlled formation of the micro- and nanostructures was well discussed, and the assembly model was proposed. A superhydrophobic film wi…
This work describes the base triggered enhancement of first hyperpolarizability of a tautomeric organic molecule, namely, benzoylacetanilide (BA). We have used the hyper-Rayleigh scattering technique to measure the first hyperpolarizability (β) of BA which exists in the pure keto form in water and as a keto-enol tauto…
Interaction between atoms in Mg/TiAl sandwiched films and hydrogenation of the films are studied by first-principles calculations. The formation energy is used to estimate the energetic stability of the Mg/TiAl films. The Mg/TiAl sandwiched films are more stable than the pure Mg film. The adsorptions of hydrogen in th…
Improving the SiC – Si / MAS interface is essential for enhancing the SiC – Si / MAS joint strength. In this work, well‐dispersed SiC nanowires (NWs) were in situ synthesized at the SiC – Si / MAS interface in the joints as the anchors, which made the fracture feature of the joints change from SiC – Si / MAS interface…
In state-of-the-art high temperature solid oxide fuel cells (SOFCs), a porous composite of nickel and yttria stabilized zirconia (Ni/YSZ) is employed as the anode. The rapid oxidation of Ni into NiO is regarded as the main cause of the so-called reduction-oxidation (redox) instability in Ni/YSZ anodes, due to the pres…
Self-standing biocompatible films have yet to be prepared by physical or chemical vapor deposition assisted by plasma polymerization because gaseous monomers have thus far been used to create only polymer membranes. Using a nongaseous monomer, we previously found a simple fabrication method for a free-standing thin fi…
Durchsichtige Oberflächen: Um superomniphobe Oberflächen, die beispielsweise selbstreinigend, schmutzabweisend, anti-adhäsiv und beschlagsfrei sind, für Smartphone-Displays (Bild), Brillen, Windschutzscheiben oder Flachbildschirme verwenden zu können, müssen diese hoch transparent sein. Eine Spraymethode wurde entwick…
The new intermetallic NdNiMg5 was discovered during the study of the Mg-rich part of the Mg-Nd-Ni system. It was synthetized by melting of the constituent elements in a sealed tantalum tube with subsequent annealing. Its structure was determined by X-ray diffraction on a single crystal. Crystal data: orthorhombic syst…
Zirconia nanopowder compacts with comparable particle sizes and pore size distributions but different phase structures were prepared. The sintering behavior of monoclinic, tetragonal, and cubic zirconia nanopowders was directly compared. The densification and microstructural changes during sintering were investigated.…
Understanding multiple-exciton generation (MEG) in quantum dots (QDs) requires in-depth measurements of transient exciton dynamics. Because MEG typically faces competing ultrafast energy-loss intra-band relaxation, it is of central importance to investigate the emerging time-scale of the MEG kinetics. Here, we present…
BACKGROUND: Inorganic mesoporous materials exhibit good biocompatibility and hydrothermal stability for cell immobilization. However, it is difficult to encapsulate living cells under mild conditions, and new strategies for cell immobilization are needed. We designed a "fish-in-net" approach for encapsulation of enzym…
This work presents the morphological characterization of CeO2 nanocrystals by the analysis of single unfiltered high-angle annular dark-field (HAADF)-high-resolution scanning transmission electron microscopy (HRSTEM) images. The thickness of each individual atomic column is estimated by the classification of its HAADF…
Supramolecular luminescence stems from non-covalent exciton behaviors of active π-segments in supramolecular entities or aggregates via intermolecular forces. Herein, a π-conjugated oligofluorenol, containing self-complementary double hydrogen bonds, was synthesized using Suzuki coupling as a supramolecular semiconduc…
Thin films of nanocrystalline MgO were deposited on glass/Si substrates by rf/dc sputtering from metallic Mg, and ceramic MgO targets. The purpose of this study is to identify the differences in the properties, magnetic in particular, of MgO films obtained on sputter deposition from 99.99% pure metallic Mg target in a…
Das neue Perowskit-Material SrSc0.175Nb0.025Co0.8O3−δ zeigt eine schnelle Sauerstoffdiffusion unterhalb von 550 °C (Sauerstoffbewegung durch den schwarzen Pfeil angedeutet). Ihre Verwendung als Sauerstoffreduktionskathode in einer Samarium-dotierten CeO2-Brennstoffzelle führt zu einer hohen elektrochemischen Leistung,…
A LaCoO3/SrTiO3 heterostructure grown on Si (001) is shown to provide electrically switchable ferromagnetism, a large, electrically tunable magnetoresistance, and a vehicle for achieving and probing electrical control over ferromagnetic behavior at submicron dimensions. Fabrication of devices in a field-effect transis…
In a recent study, we attempted to confer a tumor-selective cytotoxic activity to methyl-β-cyclodextrin (M-β-CyD), we synthesized folate-conjugated M-β-CyD (FA-M-β-CyD), and demonstrated the potential of FA-M-β-CyD as a novel anticancer agent at a high dose. In the present study, to expand the application of FA-M-β-Cy…
The adsorption isotherms and aggregate structures of adsorbed surfactants on smooth thin-film surfaces of mineral oxides have been studied by optical reflectometry and atomic force microscopy (AFM). Films of the mineral oxides of titania, alumina, hafnia, and zirconia were produced by atomic layer deposition (ALD) wit…
The authors report the first preparation of high-density ultrafine green-emitting wool-like BaCO3 nanowires, having an average diameter of 18.5 nm, and an average crystallite size of 13.4 nm, by an electrospinning method with a subsequent two-step calcination approach. A possible vapor–solid interaction mechanism was…
We theoretically and experimentally investigate subwavelength imaging with a flat lens constructed with fishnet metamaterial. By adopting a ring antenna with a diameter of 5 mm, a high-quality image, with the full width at half maximum no more than half of the operational wavelength at 10 GHz, is measured in free spac…