Enhanced Moisture-Reactive Hydrophilic-PTFE-Based Flexible Humidity Sensor for Real-Time Monitoringopen access
- Authors
- Park, H.[Park, H.]; Lee, S.[Lee, S.]; Jeong, S.H.[Jeong, S.H.]; Jung, U.H.[Jung, U.H.]; Park, K.[Park, K.]; Lee, M.G.[Lee, M.G.]; Kim, S.[Kim, S.]; Lee, J.[Lee, J.]
- Issue Date
- Mar-2018
- Publisher
- MDPI
- Keywords
- Flexible humidity sensor; Hydrophilic polytetrafluoroethylene (H-PTFE); Real-time monitoring
- Citation
- SENSORS, v.18, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- SENSORS
- Volume
- 18
- Number
- 3
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/20750
- DOI
- 10.3390/s18030921
- ISSN
- 1424-8220
- Abstract
- Flexible sensors connected to cell phones are a promising technology that can aid in continuously monitoring signals in our daily lives, such as an individual's health status and information from buildings, farms, and industry. Among such signals, real-time humidity monitoring is crucial to a comfortable life, as human bodies, plants, and industrial environments require appropriate humidity to be maintained. We propose a hydrophilic polytetrafluoroethylene (H-PTFE)-based flexible humidity sensor integrated with readout circuitry, wireless communication, and a mobile battery. To enhance its sensitivity, linearity, and reliability, treatment with sodium hydroxide implements additional hydroxyl (OH) groups, which further enhance the sensitivity, create a strong linearity with respect to variations in relative humidity, and produce a relatively free hysteresis. Furthermore, to create robust mechanical stability, cyclic upward bending was performed for up to 3000 cycles. The overall electrical and mechanical results demonstrate that the flexible real-time H-PTFE humidity sensor system is suitable for applications such as wearable smart devices.
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Collections - Engineering > School of Advanced Materials Science and Engineering > 1. Journal Articles
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