Ultrahigh humidity sensitivity of graphene oxide
Southeast University · Nagano University · +1 more institution
Abstract
Humidity sensors have been extensively used in various fields, and numerous problems are encountered when using humidity sensors, including low sensitivity, long response and recovery times, and narrow humidity detection ranges. Using graphene oxide (G-O) films as humidity sensing materials, we fabricate here a microscale capacitive humidity sensor. Compared with conventional capacitive humidity sensors, the G-O based humidity sensor has a sensitivity of up to 37800% which is more than 10 times higher than that of the best one among conventional sensors at 15%-95% relative humidity. Moreover, our humidity sensor shows a fast response time (less than 1/4 of that of the conventional one) and recovery time (less…
Citation impact
- FWCI
- 24.00
- Percentile
- 100%
- References
- 56
Authors
8Topics & keywords
- Humidity
- Relative humidity
- Materials science
- Graphene
- Capacitive sensing
- Sensitivity (control systems)
- Oxide
- Microscale chemistry
Funding
- NNNational Natural Science Foundation of ChinaAwards: 61106055, 61274114, 51071044
- MUMultidisciplinary University Research InitiativeAward: FA9550-12-1-0471
- PFProgram for New Century Excellent Talents in UniversityAward: NCEF-09-0293
- NKNational Key Research and Development Program of ChinaAwards: 2011CB707601, 2009CB623702
- AFAir Force Office of Scientific ResearchAwards: FA9550-, FA9550, FA9550-12, FA9550-12-1-0471, FA9550-12-1