Understanding and Mitigating Triboelectric Artifacts in Wearable Electronics by Synergic Approaches

电生理测量是一种被广泛接受的健康监测和幸福管理工具和标准。大量的电生理测量设备已经被开发出来，包括临床设备、研究产品和消费电子产品。然而，到目前为止，确保长期稳定和准确的信号采集仍然具有挑战性，特别是在可穿戴条件下，不仅适用于医院环境中的医疗应用，也适用于日常健康管理。运动诱发的伪影广泛存在于电生理记录中，无论电极是湿的、干的还是非接触的。这些伪影是临床诊断中接受可穿戴设备和电容电极的主要障碍之一。该项目旨在提供新的策略来减轻可穿戴电子设备中运动引起的伪影，并设计精确的可穿戴电子设备用于日常监测和疾病诊断。专业人员将向学生和研究界传播研究成果。将为本科和研究生教育开发新的课程材料。参与研究计划的本科生和研究生将获得硬件设计和数据分析方面的各种知识。对于K-12学生，pi将通过女生工程探索日和密歇根理工大学夏季青年项目提供综合研究和教育经验。将为K-12学生提供纺织材料摩擦发电的研究演示和实践经验。本提案的研究目标是了解可穿戴设备中摩擦电伪影的基本机制，并提供减轻伪影的协同解决方案。为实现这一目标，提出了三种方法：1)通过物理建模和实验验证，了解可穿戴状态下摩擦电荷产生的机理；2)在理解的指导下，开发基于摩擦材料的传感器来操纵摩擦电荷以去除伪影；3)利用新提出的基于摩擦材料的传感器和统计数据分析来估计真正的电生理信号。如果成功，该项目产生的协同知识不仅有助于改善医学界的传统生物仪器，还将使消费可穿戴电子产品的工业界受益。

Electrophysiological measurement is a well-accepted tool and standard for health monitoring and well-being management. A great number of electrophysiological measurement devices have been developed including clinical equipment, research products, and consumer electronics. However, until now, it is still challenging to secure long-term stable and accurate signal acquisition, especially in wearable condition, not only for medical application in hospital settings, but also for daily well-being management. Motion-induced artifacts widely exist in electrophysiological recording regardless of electrodes (wet, dry, or noncontact). These artifacts are one of the major impediments against the acceptance of wearable devices and capacitive electrodes in clinical diagnosis. This project is to provide new strategies to mitigate motion-induced artifacts in wearable electronics and design accurate wearable electronics for daily monitoring and disease diagnosis. The PIs will disseminate the research products to both students and the research community. New course materials will be developed for undergraduate and graduate education. Undergraduate and graduate students involved in the research program will obtain diverse knowledge in hardware design and data analytics. For K-12 students, the PIs will provide an integrated research and educational experience through the programs of Engineering Exploration Day for Girls and the Summer Youth Program at Michigan Technological University. A research demo and hands-on experience for triboelectric generation in textile materials will be developed and provided to K-12 students.The research goal of this proposal is to understand the fundamental mechanism of triboelectric artifacts in wearable devices and provide synergistic solutions to mitigating the artifacts. Three approaches are proposed to achieve the goal: 1) understanding the mechanism of triboelectric charge generation in wearable condition by physical modeling and experimental validation; 2) guided by the understanding, developing tribomaterial-based sensors to manipulate triboelectric charges for artifact removal; 3) leveraging the proposed new tribomaterial-based sensors and statistical data analytics for true electrophysiological signal estimation. If successful, the synergic knowledge produced by the project will not only help improve the traditional bioinstrumentation in the medical society, but also benefit industrial community of consumer wearable electronics.