Materials Literature
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Der monokline Perowskit BiCo1−xFexO3 (x≈0.7) durchläuft einen Strukturübergang zweiter Ordnung von tetragonal nach monoklin, der mit einer Drehung des Polarisationsvektors von der [001]- in die [111]-Richtung einer pseudokubischen Zelle einhergeht. Die durch Elektronenbeugung und Synchrotron-Pulverröntgenbeugung ermit…
The study investigated the chemical doping effect of Li in the Fe(Se,Te) system. With the addition of Li, the NiAs phase was precipitated, which resulted in worse superconductivity in FeSe samples. The XRD results indicated that chemical stress was found in the FeTe system which showed no superconductivity by doping L…
The thermal conductivity of carbon nanotubes with Stone-Wales (SW) defects was investigated using non-equilibrium molecular dynamics method. The defect effects were analyzed by the temperature profile and local thermal resistance of the nanotubes with one or more SW defects and further compared with perfect tubes. The…
An understanding of the reaction mechanisms of ethylenediaminetetraacetic acid (EDTA) and diethanolamine (DEA) for producing solution-derived (K, Na)NbO 3 (KNN) thin films with outstanding piezoelectric properties and low leakage current is developed. X-ray photoelectron spectroscopy (XPS), Fourier transform infrared…
Superprotonic conduction in the LiH2PO4 (LDP) system has been studied by means of impedance spectroscopy. A dielectric dispersion associated with room-temperature superionic conduction is manifested, as the temperature-dependent dielectric constant displays a broad peak shifting toward the high temperatures with incre…
Silver citrate solution was irradiated by monochromatic light from light-emitting diodes (LEDs). Under visible-light irradiation, a characteristic peak (Abs hex ) was observed in the absorption spectrum above a certain value of fluence (Φ thres ). The formation of hexagonal silver nanoprisms was confirmed by transmiss…
Surface passivation of nanoporous crystalline silicon can reduce its thermal conductivity. This was established using equilibrium molecular dynamics simulations. The porosity varied from 8% to 38% while the pore diameter ranged from 1.74 to 2.93 nm. Hydrogen and oxygen passivation reduced thermal conductivity by 11% t…
We present few-layer graphene synthesis by negative carbon cluster ion implantation with C1, C2, and C4 at energies below 20 keV. The small C-clusters were produced by a source of negative ion by cesium sputtering with medium beam current. We show that the nonlinear effect in cluster-induced damage is favorable for gr…
Abstract To investigate their memory behaviours, single-walled carbon nanotubes (SWCNTs) were embedded in the floating gate of a hybrid metal–insulator–semiconductor structure using layer-by-layer deposition, and polymethylmethacrylate (PMMA) as the dielectric. Unlike longer SWCNT-based structures, shortened SWCNTs we…
Magnetic relaxation is ubiquitous in magnetic materials, and elucidation of the underlying mechanisms is important for achieving reliable device operations. Here, we systematically investigate the magnetic relaxation in compressively strained La0.7Sr0.3MnO3 thin films. Upon the removal of external magnetic field, the…
To increase the viability of fat grafts using vascular endothelial growth factor (VEGF) in a calcium alginate microsphere controlled release system. Twenty-four rats were divided into 4 groups of 6 rats each. Group 1 was the preconditioning group in which VEGF was applied prior to the fat grafting. In group 2, VEGF wa…
UNLABELLED: Presently ready-to-eat cereals are coated with high levels of sugar coating to extend the bowl life. Because of health concerns of added sugar, there is a need to identify alternative coating materials. This study was designed to test the efficacy of debranched corn starches with varying amylose contents a…
The previously reported crystal structures of α-amino-β-carboxymuconate-ε-semialdehyde decarboxylase (ACMSD) show a five-coordinate Zn(II)(His)(3)(Asp)(OH(2)) active site. The water ligand is H-bonded to a conserved His228 residue adjacent to the metal center in ACMSD from Pseudomonas fluorescens (PfACMSD). Site-direc…
We report ferroelectric (FE), ferromagnetic, and magnetoelectric (ME) properties of BiFeO3 films directly deposited on flexible magnetic Ni tapes. Without use of metal-oxide and/or noble metal buffer layer between the BiFeO3 and the Ni, both ferroelectric and magnetic properties of the film and the substrate are prese…
A single ring-shape ceramic plate piezoelectric actuator operated in shear-bending mode was proposed for high-temperature operation. The actuator was formed from BiScO3-PbTiO3 ceramic and polarized in the radial direction. A large bending displacement at the center of the actuator was piezoelectrically generated under…
Morphological and optical characteristics of radio frequency-sputtered zinc aluminum oxide over porous silicon (PS) substrates were studied before and after irradiating composite films with 130 MeV of nickel ions at different fluences varying from 1 × 1012 to 3 × 1013 ions/cm2. The effect of irradiation on the composi…
Electrically reported self-healing polymers are designed by mimicking skins of animal, and made by embedding an ordered network of glass microtubes inside polymer matrices. The microtubes contain metallic microwires, and mixtures of healing agent and conductive carbon powders. Cracks on the surface due to external for…
It is shown that current-activated pressure-assisted densification (CAPAD) is sensitive to the Peltier effect. Under CAPAD, the Peltier effect leads to a significant redistribution of heat within the sample during the densification. The densification of highly p-doped silicon nanoparticles during CAPAD and the propert…
We report on an all-in-fiber liquid crystal (LC) structure designed for the modulation of light incident transverse to the fiber axis. A hollow cavity flanked by viscous conductors is introduced into a polymer matrix, and the structure is thermally drawn into meters of fiber containing the geometrically scaled microfl…
There are growing demands for the next generation lithium ion batteries with high energy density as well as high power performance for renewable energy storage and electric vehicles application. Recently, nanoscale materials with outstanding energy storage capability have received considerable attention due to their u…