含金属芯压电纤维可以模仿昆虫的毛发感受器,感知周围环境的气流变化。在含金属芯压电纤维的部分纵向表面涂镀电极,制备了表面部分电极含金属芯压电纤维传感器PMPF(Partial electrode of Metal core Piezoelectric Fiber)。基于平均电荷...含金属芯压电纤维可以模仿昆虫的毛发感受器,感知周围环境的气流变化。在含金属芯压电纤维的部分纵向表面涂镀电极,制备了表面部分电极含金属芯压电纤维传感器PMPF(Partial electrode of Metal core Piezoelectric Fiber)。基于平均电荷法,建立了悬臂梁结构PMPF准静态气流传感模型,分析了PMPF产生的电荷值与表面电极分布角度、纤维长度、气流流速和气流方向的关系。搭建了实验系统,测试了PMPF对冲击气流的响应,验证了理论模型。结果表明,PMPF的传感信号和气流流速成指数关系,和气流方向成"8"字形关系。PMPF具有气流速度和方向的传感性能。展开更多
A simple method for the preparation of Pd nanoparticles is described. The Pd nanoparticles were electrodeposited on the gold electrode surface from 0.5 mol/L H 2SO 4 solution containing 0.01 mol/L K 2PdCl 4 by applyin...A simple method for the preparation of Pd nanoparticles is described. The Pd nanoparticles were electrodeposited on the gold electrode surface from 0.5 mol/L H 2SO 4 solution containing 0.01 mol/L K 2PdCl 4 by applying potential step from 1.1 V to 0 V through 5 s. Scanning electron microscopy proved that the as-prepared Pd nanoparticles are uniformly distributed on the bare gold electrode surface. The resulted Pd nanoparticles film modified gold electrode possesses a high catalytic activity for the reduction of dissolved oxygen in 0.1 mol/L KCl solution.展开更多
文摘含金属芯压电纤维可以模仿昆虫的毛发感受器,感知周围环境的气流变化。在含金属芯压电纤维的部分纵向表面涂镀电极,制备了表面部分电极含金属芯压电纤维传感器PMPF(Partial electrode of Metal core Piezoelectric Fiber)。基于平均电荷法,建立了悬臂梁结构PMPF准静态气流传感模型,分析了PMPF产生的电荷值与表面电极分布角度、纤维长度、气流流速和气流方向的关系。搭建了实验系统,测试了PMPF对冲击气流的响应,验证了理论模型。结果表明,PMPF的传感信号和气流流速成指数关系,和气流方向成"8"字形关系。PMPF具有气流速度和方向的传感性能。
文摘A simple method for the preparation of Pd nanoparticles is described. The Pd nanoparticles were electrodeposited on the gold electrode surface from 0.5 mol/L H 2SO 4 solution containing 0.01 mol/L K 2PdCl 4 by applying potential step from 1.1 V to 0 V through 5 s. Scanning electron microscopy proved that the as-prepared Pd nanoparticles are uniformly distributed on the bare gold electrode surface. The resulted Pd nanoparticles film modified gold electrode possesses a high catalytic activity for the reduction of dissolved oxygen in 0.1 mol/L KCl solution.
