humidity sensor (IMAGE)
Caption
Illustration showing fabrication and application of the pencil-on-paper hydration sensor. Schematics showing the (a) fabrication processes and (b) the response mechanism of the flexible pencil-on-paper hydration sensor with (c) applications in health monitoring, noncontact switching, and skin characterizations.
Credit
Courtesy Huanyu “Larry” Cheng / Penn State
Usage Restrictions
Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted.
License
CC BY-NC-ND