High-Sensitivity Wearable and Flexible Humidity Sensor Based on Graphene Oxide/Non-Woven Fabric for Respiration Monitoring
High-Sensitivity Wearable and Flexible Humidity Sensor Based on Graphene Oxide/Non-Woven Fabric for Respiration Monitoring
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DOI：
10.1021/acs.langmuir.0c01315
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发表时间：
2020-08-18
期刊：
影响因子：
3.9
通讯作者：
Chen, Huawei
中科院分区：
文献类型：
--
作者：
Wang, Yamei;Zhang, Liwen;Chen, Huawei
由于其便携性和成本效益，用于患者呼吸分析的湿度传感逐渐普及。然而，目前的柔性湿度传感器主要由聚合物薄膜制成，其吸湿性和透气性较差，降低了其灵敏度和舒适性。在这项研究中，利用涂覆氧化石墨烯（GO）的无纺布（NWF）开发了一种高灵敏度的湿度传感器。用牛血清白蛋白提高氧化石墨烯在NWF上的吸附，并通过调节其浓度考察其对灵敏度的影响。通过测试不同的相对湿度水平，实验验证了其高湿度灵敏度，并通过成功监测快速和深呼吸、区分鼻口呼吸，甚至识别简单的口语单词，验证了其在不同呼吸条件下的快速响应和出色的可行性。本研究开发了一种基于GO/NWF的透气亲肤湿度传感器，是一种很有前景的人体医疗保健设备。
The popularity of humidity sensing for respiratory analysis of patients is gradually increasing because of its portability and cost-effectiveness. However, current flexible humidity sensors are mainly made of polymer films, whose poor hygroscopicity and breathability reduce their sensitivity and comfort. In this study, a highly sensitive humidity sensor was developed using non-woven fabric (NWF) coated with graphene oxide (GO). Bovine serum albumin was used to improve the adsorption of GO onto the NWF, and its effect on sensitivity was investigated by adjusting its concentration. High-humidity sensitivity was experimentally validated by testing different relative humidity levels, and its fast response and excellent feasibility under diverse breathing conditions were verified by successful monitoring of fast and deep breathing, differentiating nose and mouth breathing, and even identifying simple spoken words. This study developed a breathable and skin-friendly humidity sensor based on GO/NWF, which is a promising device for human healthcare.