内容简介
本研究论文聚焦兼具高灵敏度和宽检测范围的仿贻贝MXene基压力传感器。作为可穿戴电子设备的重要组成部分，柔性压力传感器因其在健康监测、电子皮肤和人机交互等领域中广阔的应用前景而备受关注。然而，在较宽的压力范围内实现传感器的高灵敏性，同时具备快速的响应/恢复时间和与皮肤无缝贴合，仍然是一个重大挑战。在本文中，我们提出使用真空诱导自组装策略制备具有“砖-砂浆”内部结构的珍珠层状MXene/羧甲基纤维素钠（CMC）纳米复合传感膜。柔性CMC“砂浆”的嵌入有效缓解了MXene导电纳米片的层间堆积，赋予其丰富的可变接触通路，提高了纳米复合材料的力学稳定性，从而实现了传感器在宽压力范围内的高灵敏性（0.03–22.37 kPa: 162.13 kPa−1; 22.37–135.71 kPa: 127.88 kPa−1; 135.71–286.49 kPa: 100.58 kPa−1)。此外，该传感器还具有低检测极限（0.85 Pa）、快速响应/恢复时间（8.58 ms/34.34 ms）和良好的循环稳定性。基于上述传感器的优异性能，我们探究了将其用于区分微小物体、人体生理信号识别，空间阵列、机器人运动监测等应用的可行性。
引用本文（点击最下方阅读原文可下载PDF）
Wang G, Meng L, Ji X, et al., 2024. Nacre-inspired MXene-based film for highly sensitive piezoresistive sensing over a broad sensing range. Bio-des Manuf 7(4): 463–475. https://doi.org/10.1007/s42242-024-00292-4
文章导读
图1 类贻贝结构传感器的制备示意图
图2 传感器的压敏性评估
图3 传感器的工作机理、传感模型及等效电路
图4 传感器用于大压力和微小压力测量应用展示
参考文献
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