Kim Juwan, Noh Jun Ho, Chun Sungwoo, Kim Seon Jeong, Sim Hyeon Jun, Choi Changsoon
Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea.
Department of Advanced Battery Convergence Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea.
Nano Lett. 2023 Aug 23;23(16):7623-7632. doi: 10.1021/acs.nanolett.3c02221. Epub 2023 Aug 2.
Wearable sensing systems are suitable for monitoring human motion. To realize a cost-effective and self-powered strain-sensing fiber, we developed a mechano-electrochemical harvesting yarn and textile using hierarchically arranged plied yarns composed of meter-long graphene-coated cotton yarns. Such a fiber relies on the principle of electrochemical capacity change to convert mechanical energy to electric energy. Further, this harvester can be used as a self-powered strain sensor because its output depends on mechanical stimuli. Additionally, the yarn can be woven into a kinematic sensing textile that measures the strength and direction of the applied force. The textile-type harvester can successfully detect various human movements such as pressing, bending, and stretching. The proposed sensing fiber will pave the way for the development of advanced wearable systems for ubiquitous healthcare in the future.
可穿戴传感系统适用于监测人体运动。为了实现一种经济高效的自供电应变传感纤维，我们开发了一种机械电化学能量收集纱线和纺织品，它使用由米长的石墨烯涂层棉纱组成的分层排列的合股纱线。这种纤维依靠电化学容量变化原理将机械能转化为电能。此外，这种能量收集器可作为自供电应变传感器，因为其输出取决于机械刺激。此外，该纱线可编织成运动传感纺织品，用于测量所施加力的强度和方向。这种纺织品型能量收集器能够成功检测各种人体运动，如按压、弯曲和伸展。所提出的传感纤维将为未来开发用于普及医疗保健的先进可穿戴系统铺平道路。
