材料科学
电介质
压力传感器
振动
石墨烯
混溶性
磁滞
弹性(物理)
纳米技术
粘弹性
复合材料
光电子学
声学
机械工程
聚合物
量子力学
物理
工程类
作者
Changgeng Zhang,Zhenwu Wang,He Zhu,Qi Zhang,Shiping Zhu
标识
DOI:10.1002/adma.202308520
摘要
Abstract Omnipresent vibrations pose a significant challenge to flexible pressure sensors by inducing unstable output signals and curtailing their operational lifespan. Conventional soft sensing materials possess adequate elasticity but prove inadequate in countering vibrations. Moreover, the utilization of conventional highly‐damping materials for sensing is challenging due to their substantial hysteresis. To tackle this dilemma, dielectric gels with controlled in situ microphase separation have been developed, leveraging the miscibility disparity between copolymers and solvents. The resulting gels exhibit exceptional compression stress, remarkable dielectric constant, and exceptional damping capabilities. Furthermore, flexible pressure sensors based on these microphase‐separated gels show a wide detection range and low detection limit, more importantly, excellent sensing performance on vibrating surfaces. This work offers high potentials for applying flexible pressure sensors in complex practical scenarios and opens up new avenues for applications in soft electronics, biomimetic robots, and intelligent sensing.
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