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Paper as Active Layer in Inkjet-Printed Capacitive Humidity Sensors.

Authors :
Gaspar, Cristina
Olkkonen, Juuso
Passoja, Soile
Smolander, Maria
Source :
Sensors (14248220). Jul2017, Vol. 17 Issue 7, p1464. 10p.
Publication Year :
2017

Abstract

An inkjet-printed relative humidity sensor based on capacitive changes which responds to different humidity levels in the environment is presented in this work. The inkjet-printed silver interdigitated electrodes configuration on the paper substrate allowed for the fabrication of a functional proof-of-concept of the relative humidity sensor, by using the paper itself as a sensing material. The sensor sensitivity in terms of relative humidity changes was calculated to be around 2 pF/RH %. The response time against different temperature steps from 3 to 85°C was fairly constant (about 4-5 min), and it was considered fast for the aimed application, a smart label. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14248220
Volume :
17
Issue :
7
Database :
Academic Search Index
Journal :
Sensors (14248220)
Publication Type :
Academic Journal
Accession number :
123753152
Full Text :
https://doi.org/10.3390/s17071464