材料科学
压阻效应
电极
压力传感器
灵敏度(控制系统)
弹性体
光电子学
导电体
联轴节(管道)
纳米技术
复合材料
机械工程
电子工程
工程类
化学
物理化学
作者
Jiatai Sun,Ding Zhang,Renkun Zhang,Jingxiang Zhang,Qiuying Zhao,Haiyan He,Huajie Huang,Lu Yang,Yuanping Xu
标识
DOI:10.1021/acsami.4c05097
摘要
Flexible piezoresistive pressure sensors are garnering substantial attention, in line with advancements in biointegrated and wearable electronics. However, a significant portion of piezoresistive pressure sensors suffer from the trade-off between sensitivity and pressure range. Moreover, the current piezoresistive sensors generally rely on a rigid metallic electrode, severely deteriorating their long-term durability. Herein, a fully flexible piezoresistive sensor coupling polyurethane (PU) based electrode and active sensing element is proposed to circumvent the aforementioned problems. By rationally regulating the double-permeable conductive networks within the PU matrix, an elastomeric electrode and sensing element are implemented, respectively. The assembled heterostructured configurations enable impressive sensitivity up to 7.023 kPa–1, broad pressure detection (up to 420 kPa), an ultralow pressure sensing limit (0.1 Pa), and extraordinary operation stability over 80000 cyclic pressings along with fast response/relaxation times (60 ms/80 ms). Additionally, the fully flexible sensor is capable of both real-time detection of physiological signals and mimicking keyboards, implying its viability as a high-performance pressure sensor.
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