College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China.
College of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, China.
ACS Appl Mater Interfaces. 2021 Jul 7;13(26):31285-31297. doi: 10.1021/acsami.1c08319. Epub 2021 Jun 25.
Wearable superwettable surfaces with dynamic tunable wettability and self-healability are promising for advanced wearable electronics, whereas have been rarely reported. Herein, a flexible superhydrophobic shape memory film (SSMF) with switchable surface wettability and high strain sensitivity has been conveniently fabricated. The surface topography of the SSMF can be finely adjusted by a reversible stretching (bending)/recovery way, which makes it feasible to control the surface-switchable adhesive superhydrophobicity by simple body movements, demonstrating great advantages in selective droplet manipulation and smart control of droplet movement. Moreover, benefitting from the hierarchical micro/nanostructures and outstanding sensing performance, the flexible SSMFs with good adaptivity and durability can serve as smart wearable sensors attached to human skin to achieve full-range and real-time detection of human motions and intelligent control of Internet of Things. More interestingly, the unique dynamic dewetting property enables the sensors to work in a humid environment or rainy days. Overall, this work successfully integrates dynamic tunable superwettability into design of intelligent wearable electronics with multifunctions. The obtained SSMF-based wearable surface with dynamic dewetting properties reveals great potential in versatile application fields such as liquid-repellent electronics, wearable droplet manipulators, and all-weather intelligent actuators.
具有动态可调润湿性和自修复性的可穿戴超润湿表面有望应用于先进的可穿戴电子产品，但目前此类研究还很少。本文方便地制备了一种具有可切换表面润湿性和高应变敏感性的柔性超疏水形状记忆膜（SSMF）。通过可逆拉伸（弯曲）/恢复方式可以精细调节 SSMF 的表面形貌，从而可以通过简单的身体运动来控制表面可切换的粘性超疏水性，在选择性液滴操纵和液滴运动的智能控制方面具有很大的优势。此外，得益于分层的微纳结构和出色的传感性能，适应性和耐用性良好的柔性 SSMF 可用作智能可穿戴传感器，贴合在人体皮肤上，以实现人体运动的全范围实时检测和物联网的智能控制。更有趣的是，独特的动态脱湿性能使传感器能够在潮湿环境或雨天工作。总的来说，本工作成功地将动态可调润湿性集成到具有多功能的智能可穿戴电子产品设计中。基于 SSMF 的具有动态脱湿性能的可穿戴表面在防水电子产品、可穿戴液滴操纵器和全天候智能执行器等多种应用领域具有很大的应用潜力。
