Understanding and Mitigating Triboelectric Artifacts in Wearable Electronics by Synergic Approaches

电生理测量是健康监测和福利管理的公认工具和标准。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，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，而且适用于日常健康管理，仍然是具有挑战性的。运动诱发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。这些伪影是阻碍可穿戴设备和电容电极在临床诊断中被接受的主要障碍之一。该项目旨在提供新的策略，以减少可穿戴电子设备中的运动诱导伪影，并设计用于日常监测和疾病诊断的准确可穿戴电子设备。私人投资者将向学生和研究团体传播研究成果。将为本科生和研究生教育开发新的课程材料。参与研究项目的本科生和研究生将获得硬件设计和数据分析方面的不同知识。对于K-12年级的学生，PIS将通过女孩工程探索日和密歇根理工大学的暑期青年计划提供综合研究和教育体验。我们将开发一个纺织材料摩擦发电的研究演示和实践经验，并提供给K-12学生。这项建议的研究目标是了解可穿戴设备中摩擦电子伪迹的基本机理，并提供协同解决方案来减少这些伪迹。为了实现这一目标，提出了三种方法：1)通过物理模型和实验验证来理解可穿戴条件下摩擦电荷的产生机理；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迹；3)利用所提出的基于摩擦材料的新型传感器和统计数据分析来真实地估计电生理信号。如果成功，该项目产生的协同知识不仅将有助于改善医学界的传统生物仪器，还将造福于消费类可穿戴电子产品的行业社区。

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.