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2篇 您的检索式:作者名="Zhengfei Kuang"
    题名 作者 年代 出处 被引量
1Ionic thermal up-diffusion in nanofluidic salinity-gradient energy harvesting显示文摘Advances in nanofabrication and materials science give a boost to the research in nanofluidic energy harvesting.Contrary to previous efforts on isothermal conditions,here a study on asymmetric temperature dependence in nanofluidic power generation is conducted.Results are somewhat counterintuitive.A negative temperature difference can significantly improve the membrane potential due to the impact of ionic thermal up-diffusion that promotes the selectivity and suppresses the ion-concentration polarization;especially at the low-concentration side,which results in dramatically enhanced electric power.A positive temperature difference lowers the membrane potential due to the impact of ionic thermal down-diffusion,although it promotes the diffusion current induced by decreased electrical resistance.Originating from the compromise of the temperature-impacted membrane potential and diffusion current,a positive temperature difference enhances the power at low transmembrane-concentration intensities and hinders the power for high transmembrane-concentration intensities.Based on the system’s temperature response,we have proposed a simple and efficient way to fabricate tunable ionic voltage sources and enhance salinity-gradient energy conversion based on small nanoscale biochannels and mimetic nanochannels.These findings reveal the importance of a long-overlooked element-temperature-in nanofluidic energy harvesting and provide insights for the optimization and fabrication of high-performance nanofluidic power devices.Rui Long Zhengfei Kuang Zhichun Liu Wei Liu 2019National Science Review2019,6,6:4
2Effect of Dy on Structure and Magnetic Properties of CoPt Alloys显示文摘The effects of Dy on the microstructure and magnetic properties of DyxCo50-xPt50 alloys were investigated. The XRD results indicate that all the alloys homogenized at 1000 ℃ contain only a single A1 (fcc) phase, while the alloys annealed at 675 ℃ consist of a hard-magnetic face-centered-tetragonal (fct) phase and a magnetically soft face-centered-cube (fcc) phase. Maximum values for the coercivity Hc and remanence ratio mr were achieved in Dy0.4Co49.6Pt50 alloys annealed at 675 ℃ for 80 min. For the series of DyxCo50-xPt50 alloys annealed at 675 ℃ for 60 min, Hc decreases monotonically with increasing Dy concentration, but mr is first enhanced and then weakened.成钢 PANG Kuang MA Lei GU Zhengfei HE Wei RAO Guanghui 2013Journal of Wuhan University of Technology(Materials Science)2013,28,4:0
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