Materials Literature
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Identification of individual atoms and examination of their electronic properties in materials are the ultimate goal of all microscopy-based analytical techniques. Here, we demonstrate successful single-atom imaging and spectroscopy in low-dimensional materials using (scanning) transmission electron microscopy togethe…
Abstract This paper introduces a facile method to fabricate magnetoelectric (ME) composites with microscale lead-free piezoceramic pillars embedded in a ferrite matrix without high-temperature co-sintering. The microscale piezoceramic pillars with a sectional width of about 150 µm were obtained from lead-free piezocer…
Abstract Various easy made planar electric meta‐atoms are presented as alternative designs to the conventional electric‐LC resonator for achieving negative permittivity. Transforming the LC topology of the resonator helps to facilitate transposition of geometrical parameters for the optical regime and also to improve…
The stabilizing effect of alkali and alkaline-earth metal ions on the oxygen donors of four- and six-membered faujausite-like rings has been calculated in terms of Kohn-Sham core-level (O1s) energy shifts with respect to these same complexes without cations. The results confirm and complement earlier investigations by…
Separate Gold- und Platin-Nanopartikel, die simultan auf einer Glasoberfläche immobilisiert wurden, können zur Charakterisierung der Kinetik katalytischer Reaktionen genutzt werden. Die Analytmoleküle wechselwirken mit den Platin-Nanopartikeln, während sie sich gleichzeitig im hohen lokalen optischen Feld der Gold-Nan…
New oligo- and poly(azomethine)s containing 3,4-dicyanothiophene and triphenylamine or carbazole units were synthesized under condensation reaction conditions. Although the different amino group reactivity, a one-pot synthesis of symmetric conjugated oligoazomethines was possible by judicious choice of solvent and car…
Abstract Syndiotactic polypropylene (SPP)/ethanol swelled microfibrous cellulose (MFC) composite was prepared by a melting mixer, and its morphology and tensile properties were studied. The scanning electron microscope microphotograph did not show the aggregated MFC part up to the 40 wt % MFC loading content, and the…
High‐quality epitaxial KNbO 3 ( KNO ) thin films grown on single crystalline (001) R h substrates exhibited a tetragonally strained structure with a c / a ratio of 1.04. The strained KNO thin film showed a high remanent polarization of 42 μC/cm 2 with a coercive electric field of 170 kV/cm. Based on the density functi…
In this article, we present two models to simulate solidification morphologies in monotectic alloys. With the first model, we investigate the morphological evolution under the influence of spinodal decomposition. The model requires that a gradient energy contribution for the concentration field should be incorporated,…
In this study, nanocrystalline thin films of Pb1-xCdxS were prepared by the chemical bath deposition technique on glass slides at 333 K. The structural parameters of these films were studied by XRD. The thin films were polycrystalline in nature and doping with Cd brought about shifts in peak position and changes in pe…
As society progresses and resources become scarcer, it is becoming increasingly important to cultivate new technologies that engineer next generation biomaterials with high performance properties. The development of these new structural materials must be rapid, cost-efficient and involve processing methodologies and p…
Nanosized Cr doped ZnO particles were synthesized by facile sol-gel method. The structural, optical and photocatalytic properties of the particles have been investigated by XRD, UV-Vis and FTIR spectroscopy at room temperature for 0%, 0.5%, 1%, 3% and 5% doping concentrations of Cr. X-ray diffraction analysis reveals…
Zn x Cd 1– x Se (0 ≤ x ≤ 1) nanocrystals were pulse electrodeposited onto the surface of anatase TiO 2 nanotube arrays for the first time. The pulse-electrodeposition duty cycle plays a determinative role during the nuclei formation and growth process of the Zn x Cd 1– x Se nanocrystals. The composite Zn x Cd 1– x Se/…
Abstract Poly(vinylidene fluoride)/halloysite nanotubes (HNTs) nanocomposites with good dispersion were prepared. The effect of HNTs on the crystalline structure, dynamic rheological properties, dynamic mechanical properties, and tensile properties was investigated. Results showed that at low concentration, the effect…
Sensitivity is a key factor in the performance of a sensor. To achieve maximum guided-mode resonant optical biosensor sensitivity, a comparison of biosensor sensitivity for Transverse Electric (TE) and Transverse Magnetic (TM) modes based on the distribution of electric fields is presented in this article. A label-fre…
Systematic first-principles calculations based on density functional theory were performed on a wide range of Ln2TiO5 compositions (Ln = La, Ce, Pr, Nd, Sm, Gd, Tb, Dy and Y) in order to investigate their structural, elastic, electronic, and thermal properties. At low temperature, these compounds crystallize in orthor…
The topochemical deintercalation of Na(+) ions from solid NaFeAs at room temperature in THF with iodine yields the superconducting phase Na(1-y)Fe(2-x)As(2) (T(c) ≈ 11 K). This metastable iron arsenide decomposes at 120 °C and is not accessible by high-temperature solid-state synthesis. X-ray powder diffraction confir…
Die eindimensionale Organisation von Gold-Nanopartikeln (siehe Bild) wird durch eine Kugel-zu-Zylinder-Umwandlung von Polymerhüllen ermöglicht. Charakteristisch für eine Kettenverlängerungs-„Polymerisation“ ist der Verbleib einer großen Zahl von Monomeren nach der Organisation. Einreihige Ketten können in zweireihige…
Water exchange in lanthanide(III) chelates is a key parameter in developing more effective MRI contrast agents. Our own efforts to optimize water exchange have focused on isolating single coordination geometries of LnDOTA-type chelates (DOTA = 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetate.) This isolation may b…
The surface-enhanced Raman scattering (SERS) signal from an AgFON plasmonic substrate, recoated with benzenethiol, was observed to increase by about 100% upon heating for 3.5 min at 100 °C and 1.5 min at 125 °C. The signal intensity was found to increase further by about 80% upon a 10 s exposure to a high-intensity (3…