Paper as active layer in inkjet-printed capacitive humidity sensors

Cristina Gaspar, Juuso Olkkonen, Soile Passoja, Maria Smolander

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

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.
Original languageEnglish
Article number1464
JournalSensors
Volume17
Issue number7
DOIs
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Capacitive sensors
Humidity sensors
Humidity
humidity
Atmospheric humidity
sensors
Silver
Reaction Time
Labels
Electrodes
silver
Fabrication
fabrication
Temperature
electrodes
Sensors
Substrates
configurations
temperature

Keywords

  • humidity sensor
  • inkjet printing
  • nanoparticles
  • paper
  • silver

Cite this

Gaspar, Cristina ; Olkkonen, Juuso ; Passoja, Soile ; Smolander, Maria. / Paper as active layer in inkjet-printed capacitive humidity sensors. In: Sensors. 2017 ; Vol. 17, No. 7.
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Paper as active layer in inkjet-printed capacitive humidity sensors. / Gaspar, Cristina; Olkkonen, Juuso; Passoja, Soile; Smolander, Maria.

In: Sensors, Vol. 17, No. 7, 1464, 2017.

Research output: Contribution to journalArticleScientificpeer-review

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