Materials Literature
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The microstructure evolution during a liquid-liquid phase transformation was calculated. The effect of Brownian coagulation on the microstructure development was investigated. The results indicate that Brownian coagulation has a weak effect on the nucleation of the minority phase droplets. For a given alloy compositio…
Novel faceted α‐SiAlON micro‐crystals were prepared by combustion synthesis with proper additives. These crystals exhibited various end shapes, including smooth flat hexagonal faces, pyramids bounded by six small isosceles triangles, and partial pyramids with the sharp roofs removed. The formation mechanisms of differ…
We present an analysis of the dependence of the resonant orbital-order and magnetic scattering spectra on the spin configuration. We consider an arbitrary spin direction with respect to the local crystal field axis, thus lowering significantly the local symmetry. To evaluate the atomic scattering in this case, we gene…
Ethylene propylene diene monomer rubber (EPDM) is blended with nitrile rubber (NBR). The morphology of this blend is improved by the addition of modified EPDM in small amounts. The intrinsic viscosity, permittivity measurements, and scanning electron microscopy revealed improved compatibility of these rubbers. Mechani…
We have examined temperature‐induced changes in the local structure of fluorine in silicate and aluminosilicate glasses through the application of 19 F magic‐angle spinning nuclear magnetic resonance to glasses synthesized with a wide range of fictive temperatures. We have observed an increase in Si–F bonding in binar…
Abstract The optoelectronic and electrical properties of TlGaS 2 single crystals have been investigated by means of room temperature transmittance and reflectance spectral analysis, Hall coefficient, dark electrical resistivity and photocurrent measurements in the temperature range of 200–350 K. The optical data have…
We have explored the possibility of ferromagnetic semiconducting property in the epitaxial thin films of LaFe1−xNixO3 (x=0.3, 0.4, and 0.5) grown on (001) oriented LaAlO3 substrate. We observe that substitution of Ni in the series leads to the increase in conductivity of the samples with conduction being controlled by…
Magnetic matter such as transition metals or metal oxides are able to exhibit ferromagnetism by the clustering in magnetic semiconductors. We fabricated Co-doped ZnO samples using the sol-gel method, and studied the magnetic precipitates in the samples by using both neutron diffraction and X-ray absorption fine-struct…
Einfach und effektiv: Die direkte Borylierung von Corrolen unter Iridiumkatalyse über eine C-H-Aktivierung verläuft perfekt regioselektiv und mit ausgezeichneten Ausbeuten. 2-Borylierte Corrole eröffnen einen einfachen Zugang (zwei Stufen) zu direkt verknüpften Corrol-Porphyrin-Konjugaten und anderen funktionalisierte…
In this study, the damage tolerant design in a particular compliant structure, the spider web, has been studied. The orb web spider has evolved over the last 180 million years. This long period of evolution has made the present spider web, an elegant, natural, lightweight structure that efficiently resists different l…
The effect of cation ordering on an electric field‐induced relaxor to normal ferroelectric phase transition in Pb(Mg 1/3 Nb 2/3 )O 3 (PMN)‐based ceramics was investigated. Both A‐site La doping and B‐site Sc doping were found to enhance the chemical ordering in these relaxor ceramics. However, the enhanced chemical or…
Collagen consists of repetitive Gly-Xaa-Yaa tripeptide units with proline and hydroxyproline frequently found in the Xaa and Yaa position, respectively. This sequence motif allows the formation of a highly regular triple helix that is stabilized by steric (entropic) restrictions in the constituent polyproline-II-helic…
This current work demonstrates the first reported successful synthesis of a novel unique one-dimensional nanostructure of monoclinic W 18 O 49 that exhibits characteristic porous morphologies with the nanosized pores distributed rather regularly along the length of the nanowires. Their microstructures were characteriz…
Abstract Single crystals of L ‐valine, C 5 H 11 O 2 N, have been studied by Raman spectroscopy at temperatures from 17 to 300 K over the spectral range 20–3300 cm −1 . A tentative assignment of the bands is given. Careful analysis of the Raman spectra suggests that a series of changes in the low‐wavenumber region may…
Systematic electrical and physicomechanical studies have been carried out on natural rubber (NR) blended with synthetic rubber ethylene-propylene diene monomer (EPDM) as non-polar rubber. The permittivity ("0) and dielectric loss ("00) of this blend have been measured over a wide range of frequencies (42 Hz-5 MHz) at…
We demonstrate that subsequent on- and off-times of the luminescence blinking of semiconductor quantum dots (QDs) are correlated, indicating that the process behind is not memoryless. A residual memory, which has been overlooked in previous investigations of the blinking, is found to last for several (∼40) detected on…
We propose a relation which predicts the low-frequency thermal conductivity of a one-dimensional (1D) system from the thermal conductivity and bulk viscosity at higher frequency. Our theory is based on the assumption that "ballistic" transport by sound waves dominates the heat transport. For a system with equal heat c…
Showdown at the OK corrole: The direct borylation of corroles under iridium catalysis through CH activation proceeds with perfect regioselectivity and excellent yields. 2-Borylated corroles allow an easy access (two steps) to directly linked corrole–porphyrin conjugates and other functionalized corroles (see scheme).
Pb (Zr x Ti 1− x )O 3 (PZT) thin films with (111) texture were deposited onto commercially available Pt/Ti/SiO 2 /Si substrates via the sol–gel technique. Piezoforce microscopy (PFM) was then used to analyse the evolution of domain populations as a function of the Zr content x . Domain structures of virgin films, loca…
With a lipid shell containing biotin, micron-sized bubbles bound to avidin on a porous and flexible cellulose boundary were insonified by ultrasound. The oscillation of these targeted microbubbles was observed by high-speed photography and compared to the oscillation of free-floating microbubbles. Adherent microbubble…