Bai Yunzhao, Zhou Yunlei, Wu Xuanyu, Yin Mengfei, Yin Liting, Qu Shiyuan, Zhang Fan, Li Kan, Huang YongAn
State Key Laboratory of Intelligent Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China.
Flexible Electronics Research Center, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China.
Nanomicro Lett. 2024 Nov 18;17(1):64. doi: 10.1007/s40820-024-01571-6.
This study presents a breakthrough in flexible strain sensor technology with the development of an ultra-high sensitivity and wide-range sensor, addressing the critical challenge of reconciling sensitivity with measurement range. Inspired by the structure of bamboo slips, we introduce a novel approach that utilises liquid metal to modulate the electrical pathways within a cracked platinum fabric electrode. The resulting sensor demonstrates a gauge factor greater than 10 and a strain measurement capability exceeding 100%. The integration of patterned liquid metal enables customisable tuning of the sensor's response, while the porous fabric structure ensures superior comfort and air permeability for the wearer. Our design not only optimises the sensor's performance but also enhances the electrical stability that is essential for practical applications. Through systematic investigation, we reveal the intrinsic mechanisms governing the sensor's response, offering valuable insights for the design of wearable strain sensors. The sensor's exceptional performance across a spectrum of applications, from micro-strain to large-strain detection, highlights its potential for a wide range of real-world uses, demonstrating a significant advancement in the field of flexible electronics.
本研究通过开发一种超高灵敏度和宽量程传感器，在柔性应变传感器技术方面取得了突破，解决了灵敏度与测量范围协调这一关键挑战。受竹简结构的启发，我们引入了一种新颖的方法，利用液态金属来调节破裂的铂织物电极内的电通路。由此产生的传感器显示出大于10的应变系数和超过100%的应变测量能力。图案化液态金属的集成使传感器的响应能够进行定制调节，而多孔织物结构确保了佩戴者的卓越舒适度和透气性。我们的设计不仅优化了传感器的性能，还增强了实际应用中至关重要的电气稳定性。通过系统研究，我们揭示了控制传感器响应的内在机制，为可穿戴应变传感器的设计提供了有价值的见解。该传感器在从微应变到大幅应变检测的一系列应用中表现出色，凸显了其在广泛实际应用中的潜力，展示了柔性电子领域的重大进展。
