MXene-Thermochromic Hybrid Films for Interference-Free Dual-Mode Sensing in Wearable Healthcare

IF 19 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Functional Materials Pub Date : 2025-09-25 DOI:10.1002/adfm.202522165

Anqi Zhou, Ziyi Wu, Qiaoqiao Bai, Xianghong Zhang, Xiaowei Li, Hengxin Shen, Huimin Li, Tang Liu, Song Liu

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Abstract

Flexible pressure-temperature dual-functional sensors are crucial for healthcare monitoring and human-machine interfaces, yet their development is hindered by inherent signal interference. To address this challenge, this study presents a flexible, dual-functional sensor that achieves decoupled pressure and temperature detection through a novel heterogeneous sensing architecture. The device integrates a piezoresistive MXene/cellulose nanofiber/chitosan (MCC) composite film with a thermochromic PDMS layer, enabling simultaneous electrical and visual signal outputs. The MCC film exhibits high sensitivity (35.7 kPa⁻¹), rapid response (0.25 s), ultralow detection limit (6.5 Pa), and excellent durability (>4400 cycles). The thermochromic layer provides reversible, color-based temperature feedback, ensuring minimal signal interference. This decoupled sensing strategy enables accurate monitoring of physiological signals—including pulse waveforms, respiration, and fracture healing—with strong correlation to clinical indicators. The sensor's simplicity, scalability, and multifunctionality position it as a promising platform for next-generation wearable healthcare technologies.

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用于可穿戴医疗保健无干扰双模传感的mxene -热致变色混合薄膜

柔性压力-温度双功能传感器对于医疗监控和人机界面至关重要，但其发展受到固有信号干扰的阻碍。为了应对这一挑战，本研究提出了一种灵活的双功能传感器，通过一种新颖的异构传感架构实现了分离的压力和温度检测。该设备集成了压阻MXene/纤维素纳米纤维/壳聚糖（MCC）复合膜和热致变色PDMS层，实现了同时的电信号和视觉信号输出。MCC薄膜具有高灵敏度（35.7 kPa−1），快速响应（0.25 s），超低检测限（6.5 Pa）和优异的耐久性（>；4400次循环）。热致变色层提供可逆的，基于颜色的温度反馈，确保最小的信号干扰。这种解耦传感策略能够准确监测生理信号，包括脉冲波形、呼吸和骨折愈合，并与临床指标有很强的相关性。该传感器的简单性、可扩展性和多功能性使其成为下一代可穿戴医疗保健技术的一个有前途的平台。

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来源期刊

Advanced Functional Materials 工程技术-材料科学：综合

CiteScore

29.50

自引率

4.20%

发文量

2086

审稿时长

2.1 months

期刊介绍： Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.