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。
A new kind of phospholipid product with fluorescence was derived from autoxidation of an aminophospholipid, L-alpha-phosphatidylethanolamine dilinoleoyl in solid film state. Atomic force microscopy showed that the film product was composed of round and elliptical vesicles with diameters of about 20-45 nm. The product…
The optimized configurations to use a bistable chiral-splay nematic liquid crystal cell as transmissive and reflective display are calculated using the Mueller matrix method. By numerical calculation, nontwist 0° splay state of bistable states is optimized so that the dark state is completely achieved over the entire…
The wetting properties of silicon nanotips (SiNTs) are discussed. SiNTs were prepared by single step dry etching of silicon wafers in an electron cyclotron resonance plasma of silane, methane, argon and hydrogen and water contact angles were measured as a function of their aspect ratio (α) and the inter-tip distance.…
Abstract We demonstrate the integration of nanotube networks on 512 individual devices on a full 4‐inch wafer in less than 60 seconds with a roughly 80% yield using dielectrophoresis. We present here investigations of the morphology and electrical resistance of such field aligned networks for different frequencies of…
Single crystalline ZnSe nanowires with both zincblende and wurtzite structures have been synthesized via a chemical vapour deposition method under different growth conditions. The nanowires are usually 50–80 nm in diameter, and several tens of microns in length. Room-temperature photoluminescence spectra from zincblen…
A processing method using evaporation/condensation sintering in an HCl atmosphere was developed for strengthening porous materials without shrinkage. Strengthening without shrinkage is useful in preventing voids and cracks that might be formed during constrained densification, e.g., a porous matrix in a continuous fib…
Nanocrystalline lanthanum strontium manganite (LSM) powder has been synthesized by combustion of a transparent gel obtained by the polymerization of methylol urea and urea in a solution containing La 3+ , Sr 2+ , and Mn 2+ (LSM ions). Chemistry of the transparent urea–formaldehyde (UF) polymer gel formation and struct…
We use a dedicated Z-scan setup, arranged to account for cumulative effects, to study the nonlinear optical response of Ge nanocrystals embedded in silica matrix. Samples are prepared with plasma-enchanced chemical-vapor deposition and post-thermal annealing. We measure a third-order nonlinear refraction coefficient o…
Inrush currents generated by unloaded power transformer often reduce power quality on the system. To improve this situation, this paper proposes an active inrush current compensator that is capable of reducing the inrush current effectively during startup mode. The proposed compensator is based on an inverter-based se…
A cross-linked azopolymer with high optical and thermal stability was prepared. A pure polarization grating without surface topology was fabricated from cross-linked azopolymer by polarization holography by use of orthogonal linearly polarized beams from a He-Cd laser with a power density of 60 mW/cm(-2). The surface…
The effects of the electromigration-induced stress gradient and temperature gradient on the void evolution in interconnect are examined by numerical simulation. It is found that the void in a stress gradient field will move to higher stress zone, regardless of tensile stress or compressive stress. The void motion driv…
The microstructures and mechanical properties of continuous porous SiC–Si 3 N 4 composites fabricated by multi‐pass extrusion were investigated, depending on the amount of Si powder added. Si powder with different weight percentages (0%, 5%, 10%, 15%, 20%) was added to SiC powder to make raw mixture powders, with 6 wt…
Current–voltage characteristics of ballistic carbon-nanotube field-effect transistors are characterized with an iterative simulation program. The influence of carbon-nanotube chirality and diameter on the output current is considered. An analytical current–voltage expression under the quantum capacitance limit and low…
We report that the composites of ZnO/porous Si (PS) can exhibit intensively white photoluminescence (PL) under proper excitation wavelength. The PS sample is formed by electrochemical anodization of n-type (111) silicon. ZnO films are then deposited on the PS surface by pulsed laser deposition (PLD). ZnO is transparen…
Dense machinable α‐SiAlON/BN composites were fabricated by hot‐pressing using turbostratic boron nitride (tBN) obtained from nitridation of melamine diborate. The tBN was added to the starting powders, or introduced as a coating that formed in situ on α‐Si 3 N 4 carrier powders during nitridation, and was subsequently…
Abstract Sn:ZnO thin films with different Sn concentrations were grown by pulsed laser deposition (PLD) onto single‐crystal Si(001) substrates at an oxygen pressure of 2 × 10 –2 mbar and substrate temperature of 600 °C. The targets used were high density Sn:ZnO pellets with different Sn concentrations produced by mixi…
Abstract Density functional calculations have been carried out to obtain the geometric and electronic structure of boron sheets and nanotubes. The buckled boron sheet formed by alternating up and down rows of B atoms, with a buckling height of 0.85 Å, is about 0.20 eV/B atom more stable than the corresponding atomical…
The concept of critical disclination strength (ωc) in HCP bicrystalline nanowires is developed on the basis of atomistic simulations using the modified embedded atom method. Disclinated titanium nanowires are created atomistically by combining two bicrystals with different misorientations along the tilt axis. Relaxati…
First-principles calculations are employed to study the surface relaxation and electronic structure of the fully relaxed SrTiO(3) (001) oxygen-vacancy surfaces with both Sr and Ti terminations. In contrast to the perfect surface, the larger surface rumples and smaller interlayer distances have been found. Some in-gap…
BiScO 3 –PbTiO 3 (BSPT) thin films near the morphotropic phase boundary were successfully fabricated on Pt(111)/Ti/SiO 2 /Si substrates via an aqueous sol–gel method. The thin films exhibited good crystalline quality and dense, uniform microstructures with an average grain size of 50 nm. The dielectric, ferroelectric,…