In Situ Graft-on Fibrous Composites and Nanostructure Interlocking Facilitate Highly Stable Wearable Sensors for SIDS Prevention

IF 17.2 1区工程技术 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Fiber Materials Pub Date : 2024-03-20 DOI:10.1007/s42765-024-00382-z

Kaifeng Chen, Weitao Wang, Zhihao Ye, Yabo Dong, Linpu Wan, Zijian Zhang, Cheng Lin, Liwu Liu, Jinsong Leng, Xinyu Wang, Wei Yang, Shaoxing Qu, Zongrong Wang

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Abstract

High-performance and reliable wearable devices for healthcare are in high demand for the health monitoring of infants, ensuring that life-threatening events can be addressed promptly. Herein, the continuous monitoring of infant respiration for preventing sudden infant death syndrome (SIDS) is proposed using high-performance flexible piezoresistive sensors (FPS). The thorny challenges associated with FPS, including the signal drift and poor repeatability, are progressively improved via the employment of high-Tg matrix, the strengthening of in situ graft-on conducting polyaniline layer by β-cyclodextrin (β-CD), and the nanostructure interlocking between the piezoresistive layer and electrodes. The sensor presents high linear sensitivity (30.7 kPa⁻¹), outstanding recoverability (low hysteresis up to 1.98% FS), static stability (4.00% signal drift after 24 h at 2.4 kPa) and dynamic stability (1.92% decay of signal intensity after 50,000 cycles). A wireless infant respiration monitoring system is developed. Respiration patterns and the real-time respiration rate are displayed on the phone. Notifications are implemented when abnormal status such as bradypnea and tachypnea is detected.

Graphical Abstract

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原位接枝纤维复合材料和纳米结构联锁技术促进了用于预防婴儿猝死综合症的高稳定性可穿戴传感器的开发

摘要用于医疗保健的高性能、可靠的可穿戴设备在婴儿健康监测方面需求量很大，可确保及时处理危及生命的事件。本文提出使用高性能柔性压阻传感器（FPS）对婴儿呼吸进行连续监测，以预防婴儿猝死综合症（SIDS）。通过采用高 Tg 矩阵、β-环糊精 (β-CD)原位接枝导电聚苯胺层的强化以及压阻层与电极之间的纳米结构互锁，FPS 所面临的信号漂移和重复性差等棘手问题得到了逐步改善。该传感器具有高线性灵敏度（30.7 kPa-1）、出色的可恢复性（低滞后达 1.98% FS）、静态稳定性（在 2.4 kPa 下 24 小时后信号漂移 4.00%）和动态稳定性（50,000 次循环后信号强度衰减 1.92%）。开发了一种无线婴儿呼吸监测系统。呼吸模式和实时呼吸频率会显示在手机上。当检测到呼吸过缓和呼吸过速等异常状态时，系统会发出通知。图表摘要

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来源期刊

Advanced Fiber Materials Multiple-

CiteScore

18.70

自引率

11.20%

发文量

109

期刊介绍： Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al. Publishing on fiber or fiber-related materials, technology, engineering and application.