Understanding the dynamic response in ferroelectret nanogenerators to enable self-powered tactile systems and human-controlled micro-robots
Understanding the dynamic response in ferroelectret nanogenerators to enable self-powered tactile systems and human-controlled micro-robots
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DOI：
10.1016/j.nanoen.2019.06.048
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发表时间：
2019-09-01
期刊：
影响因子：
17.6
通讯作者：
Sepulveda, Nelson
中科院分区：
文献类型：
--
作者：
Cao, Yunqi;Figueroa, Jose;Sepulveda, Nelson
自供电压力传感器是物联网传感网络中的关键设备。业界一直在努力通过优化材料选择和结构配置来提高器件性能。因此，一个理解设备-机器接口的设计平台势在必行。这项工作提出了一个全面的研究，利用铁电驻极体聚合物中的偶极矩的基本工作原理来描述能量转换机制。该研究解决了由具有不同内阻和采样率的仪器引起的电压测量差异。一个集总参数模型也被提出和验证，以解释在设备-机器接口的阻抗失配。应用，包括控制MEMS微致动器通过静态响应和动态压力传感器阵列的影响分布传感也已被证明。
Self-powered pressure sensors are critical devices in IoT sensing networks. Continuous efforts have been made in the community to improve the device performances by optimizing the materials selection and structural configurations. Therefore, a design platform for understanding the device-machine interface is imperative. This work presents a comprehensive study that uses the fundamental working principles of dipole moments in ferroelectret polymers to describe the energy conversion mechanism. The study addresses discrepancies in voltage measurements caused by instruments with different internal resistances and sampling rates. A lumped parameter model is also proposed and validated to explain the impedance mismatch at the device-machine interface. Applications including control of MEMS microactuator through static response and dynamic pressure sensor array for impact distribution sensing have also been demonstrated.