In order to enhance the sensitivity, Pt coated ZIF-67 was proposed to detect humidity levels for human physiological signal monitoring. The proposed capacitive humidity sensors have superior sensitivity of 44.9 pF/%RH for ZIF-67 with 10 nm Pt, which is about 7.8 times of ZIF-67 with 2 nm Pt and 4490 times of pure ZIF-67. The specificity of water toward 7 interferential volatile organic compounds (VOCs) was analyzed for biomarker discrimination. The proposed sensor exhibits high stability and repeatability in five cycle tests. Normal, fast, deep, and slow breath were investigated to record reading, running, yoga, and sleeping activities, respectively. In addition, the low humidity level evaporated by human sweat on the skin surface can be detected with high sensitivity. This paper provides a highly sensitive humidity sensor for daily clinical monitoring and intelligent health applications.

中文翻译：

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基于 Pt 功能化 ZIF-67 的高灵敏度湿度传感器实现非接触式医疗保健监测


为了提高灵敏度，提出了 Pt 涂层 ZIF-67 来检测湿度水平以进行人体生理信号监测。所提出的电容式湿度传感器对于具有 10 nm Pt 的 ZIF-67 具有 44.9 pF/%RH 的卓越灵敏度，约为具有 2 nm Pt 的 ZIF-67 的 7.8 倍和纯 ZIF-67 的 4490 倍。分析水对 7 种干扰性挥发性有机化合物 (VOC) 的特异性，以进行生物标志物区分。所提出的传感器在五次循环测试中表现出高稳定性和可重复性。研究人员调查了正常、快速、深呼吸和慢呼吸，分别记录阅读、跑步、瑜伽和睡眠活动。此外，还可以高灵敏度地检测人体汗液在皮肤表面蒸发的低湿度。本文提供了一种用于日常临床监测和智能健康应用的高灵敏度湿度传感器。