Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China.
ACS Appl Mater Interfaces. 2024 Apr 17;16(15):19605-19614. doi: 10.1021/acsami.4c01912. Epub 2024 Apr 3.
Wearable sweat sensors have received considerable attention due to their great potential for noninvasive continuous monitoring of an individual's health status applications. However, the low secretion rate and fast evaporation of sweat pose challenges in collecting sweat from sedentary individuals for noninvasive analysis of body physiology. Here, we demonstrate wearable textiles for continuous monitoring of sweat at rest using the combination of a heating element and a microfluidic channel to increase localized skin sweat secretion rates and combat sweat evaporation, enabling accurate and stable monitoring of trace amounts of sweat. The Janus sensing yarns with a glucose sensing sensitivity of 36.57 mA cm mM are embroidered into the superhydrophobic heated textile to collect sweat directionally, resulting in improved sweat collection efficiency of up to 96 and 75% retention. The device also maintains a highly durable sensing performance, even in dynamic deformation, recycling, and washing. The microfluidic sensing textile can be further designed into a wireless sensing system that enables sedentary-compatible sweat analysis for the continuous, real-time monitoring of body glucose levels at rest.
可穿戴汗液传感器因其在无创连续监测个体健康状态应用方面的巨大潜力而受到广泛关注。然而,汗液的低分泌率和快速蒸发使得从久坐不动的个体中收集汗液以进行无创分析身体生理学具有挑战性。在这里,我们展示了一种使用加热元件和微流道的组合的可穿戴纺织品,以增加局部皮肤汗液分泌率并对抗汗液蒸发,从而实现对微量汗液的准确和稳定监测。具有葡萄糖感应灵敏度为 36.57 mA cm mM 的 Janus 感应纱线被绣到超疏水加热纺织品中,以定向收集汗液,从而将汗液收集效率提高到 96%和 75%。该设备即使在动态变形、回收和清洗过程中,也能保持高度耐用的传感性能。微流道感应纺织品可以进一步设计成无线感应系统,使久坐兼容的汗液分析能够在休息时连续、实时监测身体内的葡萄糖水平。