Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Large variations in the permittivity of rf magnetron sputtered thin-film barium strontium titanate have been obtained through optimization of growth conditions for maximum dielectric strength and zero-field permittivity in a parallel-plate capacitor structure. Using nominal target compositions of Ba0.5Sr0.5TiO3, and P…
Abstract The compressed air up to the maximum pressure of 8 MPa is stored in the storage facility of the Compressed Air Energy Storage Gas Turbine (CAES‐G/T). The interior of the storage facility is covered by air‐tight sheets to prevent a leak of this compressed air. Electricity by a power‐generating system using suc…
In this study, extracts from 50 Taiwanese folk medicinal plants were examined and screened for anti-Helicobacter pylori activity. Ninety-five percent ethanol was used for herbal extraction. Paederia scandens (Lour.) Merr. (PSM), Plumbago zeylanica L. (PZL), Anisomeles indica (L.) O. Kuntze (AIOK), Bombax malabaricum D…
Superlattices composed of ferromagnetic Pr0.85Ca0.15MnO3 and ferroelectric Ba0.6Sr0.4TiO3 layers were fabricated on (100) SrTiO3 substrates by a pulsed-laser deposition method. The capacitance and resistive parts of the samples were analyzed from the complex impedance measurements. The superlattice with larger ferroel…
Using silicon MOSFETs with thin (5nm) thermally grown SiO2 gate dielectrics, we characterize the density of electrically active traps at low-temperature after 16keV phosphorus ion-implantation through the oxide. We find that, after rapid thermal annealing at 1000oC for 5 seconds, each implanted P ion contributes an ad…
We propose a new theoretical approach to analyze the experimental data for thermal conductivity of single-grain $i$-AlPdMn quasicrystals. The interpretation is based on the picture where cluster interfaces are the main source of phonon scattering at low temperatures. The scattering due to strain fields of cluster inte…
We present here a formulation for the calculation of the configuration-averaged optical conductivity in random alloys. Our formulation is based on the augmented-space theorem introduced by one of us [A. Mookerjee, J. Phys. C: Solid State Phys. 6, 1340 (1973)]. We show that disorder scattering renormalizes the electron…
No abstract.
Over the last several years, nitrogen oxide(s) (NOx) storage/reduction (NSR) catalysts, also referred to as NOx adsorbers or lean NOx traps, have been developed as an aftertreatment technology to reduce NOx emissions from lean‐burn power sources. NSR operation is cyclic: during the lean part of the cycle, NOx are trap…
A series of experiments is presented which demonstrate significant drag reduction for the laminar flow of water through microchannels using hydrophobic surfaces with well-defined micron-sized surface roughness. These ultrahydrophobic surfaces are fabricated from silicon wafers using photolithography and are designed t…
Martensitic and magnetic transformations of the Heusler Ni50Mn50−yXy (X=In, Sn and Sb) alloys were investigated by differential scanning calorimetry measurement and the vibrating sample magnetometry technique. In all these alloy systems, the austenite phase with the ferromagnetic state was transformed into the martens…
Abstract A simple solid oxide fuel cell plant is analysed based on the first law of thermodynamics approach. This system consists of a solid oxide fuel cell stack, a steam reformer, a mixer, a vaporiser, an afterburner, and two pre‐heaters. To simplify the study, the enthalpy at each node of the system is normalized w…
Abstract We report the thermal variation of magnetoresistance of sol–gel derived nanocrystalline manganite samples (viz. La 0.5 Pb 0.5 MnO 3– δ , La 0.7 Sr 0.3 MnO 3– δ and La 0.7 Pb 0.3 MnO 3– δ ) showing little lower metal‐insulator transition temperature ( T p ) compared to those prepared by ceramic heating route.…
A general chemical method has been developed to prepare semiconductor hollow microspheres with various electronic bandgaps (see SEM image), as well as a number of core/shell structures. These hollow structures have potential applications in the fields of optoelectronic technology, photovoltaic devices, photonic bandga…
By using transmission electron microscopy (TEM), the chirality of novel mesoporous materials has been studied. In addition, a computer simulation that uses a simple structural model was employed. The existence of chiral channels inside a tubelike material was confirmed by the observation of fringes along the length of…
A scheme of nanoscale lasers based on the so-called carbon peapods is examined in details. Since there is considerable cylindrical empty space in the middle of a single-wall carbon nanotube (SWCNT), it can serve as a laser resonant cavity that consists of two highly reflecting, alignment “mirrors” separated by some di…
Reversible 300 K ferromagnetic ordering in a diluted magnetic semiconductor, Co2+:ZnO, is achieved by lattice incorporation and removal of the native n-type defect, interstitial Zn, resulting in “off” and “on” states (Figure, red triangles and blue circles). Spectroscopic and magnetic data implicate a double-exchange…
The spin-reorientation transition of layered perovskite oxide CaNdFeO4has been investigated through powder x-ray and neutron diffraction, magnetic susceptibility, specific heat and 57Fe M?ssbauer spectrum measurements. This oxide presents orthorhombic symmetry (space group:?Bmab)?with lattice parameters at room temper…
CdSe quantum dots have been produced in an amorphous GeS 2 thin film matrix by alternating thermal evaporation in vacuum and deposition of several CdSe and GeS 2 layers, with the thickness of the latter being, typically, 20 times larger than that of the former. Raman scattering spectra of these films have been measure…
Using a laser monitoring observation technique, solid−liquid equilibria in the systems benzoic acid + p -toluic acid + chloroform at 303.15 K, benzoic acid + p -toluic acid + acetic acid at 343.15 K, and terephthalic acid + isophthalic acid + N,N -dimethylformamide at 343.15 K have been investigated. The solid−liquid…