<br>机械耐用的超疏水应变传感器，具有高生物相容性和传感性能，适用于水下运动监测,ACS Applied Materials & Interfaces

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机械耐用的超疏水应变传感器，具有高生物相容性和传感性能，适用于水下运动监测
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-01-25 , DOI: 10.1021/acsami.3c14327
Wanchen Yao _{1,

2} , Yuzhong Yan ₁ , Jianlei Sun ₃ , Zeshan Zhang ₄ , Wenwen Sun ₁ , Wenrui Huang ₁ , Jing Cheng ₁ , Hui Zhao ₁ , Meihua Xie ₁ , Qijun Sun ₂ , Gang Huang ₅ , Xiangde Lin _{1,

6}

Affiliation

在开发具有高传感性能的可穿戴柔性应变传感器来监测人体运动方面已经取得了很大进展，但在恶劣的水环境中连续运行仍然是一个重大挑战。一种有前途的策略是设计具有高度耐用的超疏水性并保持独特传感特性的传感器。在此，通过将导电炭黑纳米颗粒（CBNP）直接刷到带有聚（二甲基硅氧烷）（PDMS）涂层（即SS / PDMS）的弹性硅橡胶片（SS）上，简单地制造了具有超宽传感范围的极其耐用的超疏水应变传感器。 -CBNP 传感器）。首先，该方法避免了有毒溶剂的使用和传统的预拉伸处理。其次，考虑到传统超疏水传感器在实际应用中容易被破坏的粗糙结构和表面化学，所制备的SS/PDMS-CBNP传感器通过严酷的磨损（300次循环）、拉伸（高达200%）和超声处理（40 分钟）。第三，所制备的超疏水应变传感器具有高灵敏度（应变系数为101.75）、高拉伸性（0.015-460%）、低滞后（83 ms）和长期稳定性（10000次循环）。第四，通过兔子皮肤刺激测试证明了SS/PDMS-CBNP传感器的高生物相容性。最后，SS/PDMS-CBNP 传感器卓越的防水和传感特性使其能够监测游泳者的实时情况并在需要时发送求救信号。

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Mechanically Durable Superhydrophobic Strain Sensors with High Biocompatibility and Sensing Performance for Underwater Motion Monitoring

Much progress has been made toward the development of wearable flexible strain sensors with high sensing performance to monitor human motion, but continuous function in harsh aqueous environments remains a significant challenge. A promising strategy has been the design of sensors with highly durable superhydrophobicity and maintenance of unique sensing properties. Herein, an extremely durable superhydrophobic strain sensor with an ultrawide sensing range was simply fabricated by directly brushing conductive carbon black nanoparticles (CBNPs) onto an elastic silicone rubber sheet (SS) with poly(dimethylsiloxane) (PDMS) coatings (i.e., SS/PDMS-CBNPs sensors). First, this method avoided the use of toxic solvents and a conventional prestretching treatment. Second, considering the easily destroyed rough structures and surface chemistry for conventional superhydrophobic sensors during practical applications, the prepared SS/PDMS-CBNP sensors showed excellent mechanical durability of both superhydrophobicity and sensing as examined by harsh abrasion (300 cycles), stretching (up to 200%), and ultrasonication (40 min) treatments. Third, the prepared superhydrophobic strain sensor exhibited high sensitivity (gauge factor of 101.75), high stretchability (0.015–460%), low hysteresis (83 ms), and long-term stability (10000 cycles). Fourth, the high biocompatibility of the SS/PDMS-CBNP sensor was demonstrated by rabbit skin irritation tests. Finally, the remarkable water-repellent and sensing properties of the SS/PDMS-CBNP sensor allowed its application to monitor a swimmer’s real-time situation and send distress signals when needed.

更新日期：2024-01-25

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