Статья

Flexible Wearable Strain Sensors Based on Laser-Induced Graphene for Monitoring Human Physiological Signals

Yao ZouInstitute of Electronic and Electrical Engineering, Civil Aviation Flight University of China, Deyang 618307, ChinaMian ZhongInstitute of Civil Aviation Intelligent Sensing and Advanced Detection Technology, Civil Aviation Flight University of China, Deyang 618307, ChinaShichen LiInstitute of Electronic and Electrical Engineering, Civil Aviation Flight University of China, Deyang 618307, ChinaZehao QingInstitute of Electronic and Electrical Engineering, Civil Aviation Flight University of China, Deyang 618307, ChinaXiaoqing XingInstitute of Electronic and Electrical Engineering, Civil Aviation Flight University of China, Deyang 618307, ChinaGuochong GongCollege of Aviation Engineering, Civil Aviation Flight University of China, Deyang 618307, ChinaRan YanCollege of Aviation Engineering, Civil Aviation Flight University of China, Deyang 618307, ChinaWenfeng QinCollege of Aviation Engineering, Civil Aviation Flight University of China, Deyang 618307, ChinaJiaqing ShenInstitute of Electronic and Electrical Engineering, Civil Aviation Flight University of China, Deyang 618307, ChinaHuazhong ZhangInstitute of Electronic and Electrical Engineering, Civil Aviation Flight University of China, Deyang 618307, ChinaYong JiangSchool of Mathematics and Physics, Southwest University of Science and Technology, Mianyang 621010, ChinaZhenhua WangInstitute of Electronic and Electrical Engineering, Northwestern Polytechnical University, Xi’an 710129, ChinaChao ZhouInstitute of Civil Aviation Intelligent Sensing and Advanced Detection Technology, Civil Aviation Flight University of China, Deyang 618307, China

2023en

ABI

Аннотация

Flexible wearable strain sensors based on laser-induced graphene (LIG) have attracted significant interest due to their simple preparation process, three-dimensional porous structure, excellent electromechanical characteristics, and remarkable mechanical robustness. In this study, we demonstrated that LIG with various defects could be prepared on the surface of polyimide (PI) film, patterned in a single step by adjusting the scanning speed while maintaining a constant laser power of 12.4 W, and subjected to two repeated scans under ambient air conditions. The results indicated that LIG produced at a scanning speed of 70 mm/s exhibited an obvious stacked honeycomb micropore structure, and the flexible strain sensor fabricated with this material demonstrated stable resistance. The sensor exhibited high sensitivity within a low strain range of 0.4-8.0%, with the gauge factor (GF) reaching 107.8. The sensor demonstrated excellent stability and repeatable response at a strain of 2% after approximately 1000 repetitions. The flexible wearable LIG-based sensor with a serpentine bending structure could be used to detect various physiological signals, including pulse, finger bending, back of the hand relaxation and gripping, blinking eyes, smiling, drinking water, and speaking. The results of this study may serve as a reference for future applications in health monitoring, medical rehabilitation, and human-computer interactions.

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Идентификаторы

DOI: 10.3390/polym15173553

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar