Zhao Ruolan, He Yue, He Yu, Li Zhangcheng, Chen Min, Zhou Ning, Tao Guangming, Hou Chong
School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
Sport and Health Initiative, Optical Valley Laboratory and Wuhan National Laboratory for Optoelectronics, Wuhan 430074, China.
ACS Appl Mater Interfaces. 2023 Mar 29;15(12):16063-16071. doi: 10.1021/acsami.3c00419. Epub 2023 Mar 14.
As an important component of wearable and stretchable strain sensors, dual-mode strain sensors can respond to deformation via optical/electrical dual-signal changes, which have important applications in human motion monitoring. However, realizing a fiber-shaped dual-mode strain sensor that can work stably in real life remains a challenge. Here, we design an interactive dual-mode fiber strain sensor with both mechanochromic and mechanoelectrical functions that can be applied to a variety of different environments. The dual-mode fiber is produced by coating a transparent elastic conductive layer onto photonic fiber composed of silica particles and elastic rubber. The sensor has visualized dynamic color change, a large strain range (0-80%), and a high sensitivity (1.90). Compared to other dual-mode strain sensors based on the photonic elastomer, our sensor exhibits a significant advantage in strain range. Most importantly, it can achieve reversible and stable optical/electrical dual-signal outputs in response to strain under various environmental conditions. As a wearable portable device, the dual-mode fiber strain sensor can be used for real-time monitoring of human motion, realizing the direct interaction between users and devices, and is expected to be used in fields such as smart wearable, human-machine interactions, and health monitoring.
作为可穿戴和可拉伸应变传感器的重要组成部分，双模应变传感器可通过光/电双信号变化对应变做出响应，在人体运动监测中具有重要应用。然而，实现一种能在现实生活中稳定工作的纤维状双模应变传感器仍然是一项挑战。在此，我们设计了一种具有机械变色和机电功能的交互式双模光纤应变传感器，可应用于各种不同环境。该双模光纤是通过在由二氧化硅颗粒和弹性橡胶组成的光子光纤上涂覆一层透明弹性导电层制成的。该传感器具有可视化动态颜色变化、大应变范围（0 - 80%）和高灵敏度（1.90）。与其他基于光子弹性体的双模应变传感器相比，我们的传感器在应变范围方面具有显著优势。最重要的是，它能在各种环境条件下对应变实现可逆且稳定的光/电双信号输出。作为一种可穿戴便携式设备，双模光纤应变传感器可用于人体运动的实时监测，实现用户与设备之间的直接交互，有望应用于智能可穿戴、人机交互和健康监测等领域。
