Wan Dong, Ma Ningchen, Zhao Taochuang, Cui Xiaojing, Wang Zhaosu, Zhang Hulin, Zhuo Kai
College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China.
AIEN Institute, Shanghai Ocean University, Shanghai 201306, China.
Nanomaterials (Basel). 2021 Oct 23;11(11):2815. doi: 10.3390/nano11112815.
The adaptable monitoring of the ubiquitous magnetic field is of great importance not only for scientific research but also for industrial production. However, the current detecting techniques are unwieldly and lack essential mobility owing to the complex configuration and indispensability of the power source. Here, we have constructed a self-powered magnetic sensor based on a subtle triboelectric nanogenerator (TENG) that consists of a magnetorheological elastomer (MRE). This magnetic sensor relies on triboelectrification and electrostatic induction to produce electrical signals in response to the MRE's deformation induced by the variational magnetic field without using any external power sources. The fabricated magnetic sensor shows a fast response of 80ms and a desirable sensitivity of 31.6 mV/mT in a magnetic field range of 35-60 mT as well as preliminary vectorability enabled by the multichannel layout. Our work provides a new route for monitoring dynamic magnetic fields and paves a way for self-powered electric-magnetic coupled applications.
对无处不在的磁场进行适应性监测不仅对科学研究至关重要，对工业生产也具有重要意义。然而，由于当前检测技术配置复杂且电源不可或缺，导致其操作不便且缺乏必要的移动性。在此，我们构建了一种基于由磁流变弹性体（MRE）组成的精细摩擦电纳米发电机（TENG）的自供电磁传感器。该磁传感器依靠摩擦起电和静电感应来产生电信号，以响应由变化磁场引起的MRE变形，而无需使用任何外部电源。所制备的磁传感器在35 - 60 mT的磁场范围内显示出80ms的快速响应和31.6 mV/mT的理想灵敏度，同时通过多通道布局实现了初步的矢量性。我们的工作为动态磁场监测提供了一条新途径，并为自供电电磁耦合应用铺平了道路。
