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3D printed organohydrogel-based strain sensors with enhanced sensitivity and stability via structural design 认领 引用 被引量：2
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作者 Binbin Guo Chengyu Lin +8 位作者 Haitao Ye Yu Xue Jiewen Mo Jiawei Chen Yangfeng Cui Chenglong Fu Jiaming Bai Qi Ge Hui Ying Yang 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2025年第5期464-479,共16页
Organohydrogel-based strain sensors are gaining attention for real-time health services and human-machine interactions due to their flexibility,stretchability,and skin-like compliance.However,these sensors often have ... Organohydrogel-based strain sensors are gaining attention for real-time health services and human-machine interactions due to their flexibility,stretchability,and skin-like compliance.However,these sensors often have limited sensitivity and poor stability due to their bulk structure and strain concentration during stretching.In this study,we designed and fabricated diamond-,grid-,and peanut-shaped organohydrogel based on positive,near-zero,and negative Poisson’s ratios using digital light processing(DLP)-based 3D printing technology.Through structural design and optimization,the grid-shaped organohydrogel exhibited record sensitivity with gauge factors of 4.5(0–200%strain,ionic mode)and 13.5/1.5×106(0-2%/2%-100%strain,electronic mode),alongside full resistance recovery for enhanced stability.The 3D-printed grid structure enabled direct wearability and breathability,overcoming traditional sensor limitations.Integrated with a robotic hand system,this sensor demonstrated clinical potential through precise monitoring of paralyzed patients’grasping movements(with a minimum monitoring angle of 5°).This structural design paradigm advanced flexible electronics by synergizing high sensitivity,stability,wearability,and breathability for healthcare,and human-machine interfaces. 展开更多
关键词 3D printing organohydrogel sensitivity stability structural design
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