Journal
NANOMATERIALS
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/nano10122446
Keywords
capacitive sensors; moisture content; nanomaterials; screen printing; printed electronics
Categories
Funding
- European Commission
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This work presents an innovative application of carbon dots (Cdots) nanoparticles as sensing layer for relative humidity detection. The developed sensor is based on interdigitated capacitive electrodes screen printed on a flexible transparent polyethylene terephthalate (PET) film. Cdots are deposited on top of these electrodes. An exhaustive characterization of the nanoparticles has been conducted along with the fabrication of the sensor structure. The accompanied experiments give all the sensibility to the Cdots, showing its dependence with temperature and exciting frequency. To the best of our knowledge, this work paves the path to the use of these kind of nanoparticles in printed flexible capacitive sensors aimed to be employed in the continuously expanding Internet of Things ecosystem.
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