标度系数
材料科学
可穿戴计算机
聚二甲基硅氧烷
弯曲
涂层
应变计
纳米发生器
复合材料
纳米技术
计算机科学
压电
制作
嵌入式系统
医学
替代医学
病理
作者
Junchi Ma,Yongquan Qing,Haoyang Song,Cai Long,Changsheng Liu
标识
DOI:10.1016/j.sna.2023.114908
摘要
Wearable strain sensor has attracted much attention in human health monitoring, medical rehabilitation, and human-computer interaction. However, it is still a huge challenge for strain sensors to achieve long-term and stable operation in harsh conditions such as exposing to wet environments, directly contacting aqueous solutions or power shortage. Herein, we integrated a wearable, anti-wetting, and self-powered combined-type (WASC) strain sensor consists of three parts: a superhydrophobic and conductive Ti3C2TX (MXene) based composite coating, Ecoflex substrate and a triboelectric nanogenerator (TENG) composed of polyamide and polydimethylsiloxane films. The hierarchical micro/nano mastoid wrinkle structure of the MXene composite coating endowed WASC strain sensor with a wide sensing range (strain over 150%), superior sensitivity (gauge factor of 5678.2), and a stable superhydrophobic surface. Most importantly, the WASC sensor could efficiently monitor real-time human joints bending movements (such as finger bending) and generate electricity simultaneously, without being affected by water, acid, alkali, and salt solution. This described integration strategy of combined-type strain sensor provided a promising method for wearable strain sensors to deal with emergencies such as power shortage, wet environment, or corrosive conditions.
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