Showing papers by "Wei-Li Song published in 2010"
TL;DR: In this paper, a dielectric spectroscopy of short carbon fiber/silica composite in the frequency range from 8.2 to 12.4 GHz at temperatures between 30 and 600°C has been performed.
1,540 citations
TL;DR: In this article, the authors investigated the microwave responses of T-ZnON, including interface scattering, microcurrent attenuation, microantenna radiation, and dielectric relaxation, and built an energy attenuation model.
Abstract: Based on the unique geometrical structure of nanotetra-ZnO needle (T-ZnON), we investigate the microwave responses of T-ZnON, including interface scattering, microcurrent attenuation, microantenna radiation, and dielectric relaxation, and build an energy attenuation model. The associated quantitative formula is deduced for calculating the microwave absorption properties of T-ZnON/SiO2 nanocomposite (T-ZnON/SiO2) in the range 8–14 GHz according to the present energy attenuation model. Very good agreement between the calculated and experimental results is obtained in a wide frequency range. The maximum deviation less than 0.5 dB in the range 8–14 GHz is obtained. Using the aforementioned model, we analyze the contribution of microwave responses to the energy attenuation in the frequency range 2–18 GHz, and the results reveal that interface scattering and microcurrent attenuation make the contribution most important. In addition, we calculate the effects of the volume fraction, conductivity, permittivity, ne...
55 citations
TL;DR: In this article, ZnO whiskers and Sb 2 O 3 co-modified lead zirconate titanate (denoted as PZT/ZnO w /Sb 2O 3 ) piezoelectric composites were fabricated using a solid state sintering technique.
29 citations
TL;DR: In this article, a hybrid sol-gel method via spin-coating ZnO w suspension and PZT sol was used to obtain a perovskite structure and high-quality film surface.
26 citations
TL;DR: In this paper, a glass fiber polymer composites embedded with tetra-needle-like zinc oxide (ZnO) nanowhiskers were prepared and the results showed that the compressive properties of the composites could be significantly affected by strain rates.
23 citations
TL;DR: In this paper, the authors investigated the band structures and conductivity spectra for N-doped 3C-SiC using the first-principles density functional method.
20 citations
TL;DR: In this paper, the effect of the chloride anion concentration on the morphology and microstructure of the lead nitrate precipitates was investigated in a series of controllable experiments with different concentrations of chloride anions.
Abstract: Lead nitrate mixed with alkali in solution generates insoluble precipitates. The morphology and microstructure of the precipitates are dramatically influenced by the chloride anion concentration in the lead nitrate precursor solution. To intensively investigate the effect of the chloride anion concentration, we performed a series of controllable experiments with different concentrations of chloride anions (the concentration ratios of Pb2+ : Cl− = 1 : 0, 1 : 0.2, 1 : 0.5, 1 : 1, 1 : 2, and 1 : 3 in the solution) at different solution temperatures of 90 and 80 °C. The results reveal that, with the increasing concentration of chloride anions, the colour of the precipitates changes from yellow to red and finally to white; the morphology of the precipitates changes from plate-like to rod-like; the crystal structure of the precipitates changes from β-PbO to a mixture of β- and α-PbO (or α-PbO), and finally to lead hydroxide. These results suggest that adding chloride could lead to the formation of rod-like morphology and simultaneously could restrain the dehydration of Pb(OH)2.
11 citations