Wang Lirong, Xu Tailin, Fan Chuan, Zhang Xueji
Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, P. R. China.
Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, Guangdong 518060, P. R. China.
iScience. 2020 Dec 31;24(1):102028. doi: 10.1016/j.isci.2020.102028. eCollection 2021 Jan 22.
Reliably monitoring sweat volume has attracted much attention due to its important role in the assessment of physiological health conditions and the prevention of dehydration. Here, we present the first example of wearable strain sensor for real-time sweat volume monitoring. Such sweat volume monitoring sensor is simply fabricated via embedding strain sensing fabric in super-absorbent hydrogels, the hydrogels can wick sweat up off the skin surface to swell and then trigger the strain sensing fabrics response. This sensor can realize real-time detection of sweat volume (0.15-700 μL), shows excellent repeatability and stability against movement or light interference, reliability in the non-pathological range (pH: 4-9 and salinity: 0-100 mM NaCl) in addition. Such sensor combing swellable hydrogels with strain sensing fabrics provides a novel measurement method of wearable devices for sweat volume monitoring.
由于汗液量监测在评估生理健康状况和预防脱水方面的重要作用，可靠地监测汗液量已引起了广泛关注。在此，我们展示了首个用于实时汗液量监测的可穿戴应变传感器实例。这种汗液量监测传感器通过将应变传感织物嵌入高吸水性水凝胶中简单制成，水凝胶可将汗液从皮肤表面吸上来使其膨胀，进而触发应变传感织物产生响应。该传感器能够实现汗液量的实时检测（0.15 - 700微升），对运动或光线干扰表现出出色的重复性和稳定性，此外在非病理范围（pH值：4 - 9，盐度：0 - 100 mM NaCl）内也具有可靠性。这种将可膨胀水凝胶与应变传感织物相结合的传感器为可穿戴设备的汗液量监测提供了一种新颖的测量方法。
