材料科学
聚二甲基硅氧烷
标度系数
软机器人
电阻式触摸屏
弯曲
纳米技术
弹性体
制作
应变计
灵敏度(控制系统)
复合材料
计算机科学
执行机构
电子工程
人工智能
工程类
医学
病理
替代医学
计算机视觉
作者
Yulin Shang,Bingzhen Zhang,Jiyu Liu,Chunwen Xia,Xiaowei Yang,Defeng Yan,Jing Sun
标识
DOI:10.1007/s41871-023-00183-9
摘要
Abstract Superhydrophobic flexible strain sensors have great application value in the fields of personal health monitoring, human motion detection, and soft robotics due to their good flexibility and high sensitivity. However, complicated preparation processes and costly processing procedures have limited their development. To overcome these limitations, in this work we develop a facile and low-cost method for fabricating superhydrophobic flexible strain sensor via spraying carbon black (CB) nanoparticles dispersed in a thermoplastic elastomer (SEBS) solution on a polydimethylsiloxane (PDMS) flexible substrate. The prepared strain sensor had a large water contact angle of 153 ± 2.83° and a small rolling angle of 8.5 ± 1.04°, and exhibited excellent self-cleaning property. Due to the excellent superhydrophobicity, aqueous acid, salt, and alkali could quickly roll off the flexible strain sensor. In addition, the sensor showed excellent sensitivity (gauge factor (GF) of 5.4–7.35), wide sensing ranges (stretching: over 70%), good linearity (three linear regions), low hysteresis (hysteresis error of 4.8%), and a stable response over 100 stretching-releasing cycles. Moreover, the sensor was also capable of effectively detecting human motion signals like finger bending and wrist bending, showing promising application prospects in wearable electronic devices, personalized health monitoring, etc.
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