Highly sensitive, wearable piezoresistive methylcellulose/chitosan@MXene aerogel sensor array for real-time monitoring ofphysiological signals of pilots  

高灵敏度、可穿戴式、压阻式甲基纤维素/壳聚糖@MXene气凝胶传感器阵列,用于飞行员生理信号的实时监测

作　　者：Yilin Zhao Bin Li Mian Zhong Hongyun Fan Zhongming Li Shuangqi Lyu Xiaoqing Xing Wenfeng Qin 赵一霖;李斌;钟勉;范红云;李仲明;吕双琪;邢晓晴;秦文峰(Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,China 2;College of Aviation Electronics and Electrical,Civil Aviation Flight University of China,Deyang 618307,China;College of Aviation Engineering,Civil Aviation Flight University of China,Deyang 618307,China)

机构地区：[1]Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,China 2 [2]College of Aviation Electronics and Electrical,Civil Aviation Flight University of China,Deyang 618307,China [3]College of Aviation Engineering,Civil Aviation Flight University of China,Deyang 618307,China

出　　处：《Science China Materials》2025年第2期542-551,共10页中国科学(材料科学)(英文版)

基　　金：supported by the National Natural Science Foundation of China (52305170);the Natural Science Foundation of Sichuan Province (2022NSFSC1885)。

摘　　要：Sensors with enhanced biocompatibility, highsensitivity, and stable output have gained prominence with therapid advancement of piezoresistive sensor technologies.However, conventional piezoresistive sensors struggle to balance sensitivity and output stability. Here, we fabricated synergistic methylcellulose/chitosan MXene-based (MC/CS@MXene) aerogels through physical blending and freeze-drying,emulating the hollow bamboo structure. The aerogels formsynergistic interconnection via electrostatic adsorption andhydrogen bonding, endowing the aerogel-assembled resistivesensor with high sensitivity (2.90 kPa^(−1)), exceptional mechanical stability (8000 compression cycles at 10 kPa), andrapid response and recovery times (119 and 91 ms, respectively). A piezoresistive sensor array based on MC/CS/@MXene shows considerable potential for human–computerinteractions and wearable technologies. Furthermore, thesensor array can monitor real-time physiological signals ofcivil aviation pilots.伴随着压阻式传感器技术的快速发展,具有增强生物相容性、灵敏度高和输出稳定的传感器已经崭露头角.然而,传统的压阻式传感器面临着平衡灵敏度和稳定输出性能的挑战.本文模仿竹子中空层结构,通过物理共混和冷冻干燥制备了甲基纤维素/壳聚糖MXene (MC/CS@MXene)气凝胶.该气凝胶通过静电吸附和氢键作用,协同效应相互联接,赋予了气凝胶组装的压阻式传感器优异的性能,如:高灵敏度(2.90 kPa^(-1))、优异的机械稳定性(在10 kPa下压缩8000次)和快速的响应/恢复时间(119/91 ms).基于MC/CS/@MXene的压阻式传感器阵列在人机交互和可穿戴技术方面具有广阔的应用前景.此外,该传感器阵列还可以实时监测民航飞行员的各种生理信号.

关 键 词：wearable piezoresistive sensor array aerogel assembly MC/CS@MXene human-computer interactions real-time monitoring 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]