High-Sensitivity Wearable and Flexible Humidity Sensor Based on Graphene Oxide/Non-Woven Fabric for Respiration Monitoring

• DOI: 10.1021/acs.langmuir.0c01315
• Publication Date: 2020-07-22T05:47:52Z
• Authors: Yamei Wang; Liwen Zhang; Zhenwei Zhang; Pengyuan Sun; Huawei Chen
• Keywords: 02 engineering and technology; 0210 nano-technology

The popularity of humidity sensing for respiratory analysis patients is gradually increasing because its portability and cost-effectiveness. However, current flexible sensors are mainly made polymer films, whose poor hygroscopicity breathability reduce their sensitivity comfort. In this study, a highly sensitive sensor was developed using non-woven fabric (NWF) coated with graphene oxide (GO). Bovine serum albumin used to improve the adsorption GO onto NWF, effect on investigated by adjusting concentration. High-humidity experimentally validated testing different relative levels, fast response excellent feasibility under diverse breathing conditions were verified successful monitoring deep breathing, differentiating nose mouth even identifying simple spoken words. This study breathable skin-friendly based GO/NWF, which promising device human healthcare.