Ecoresorbable Radio-Frequency Platform for Humidity and Temperature Sensing

Aiming to reduce electronic waste in sensing applications, we report on an eco-friendly printed microstrip line to sense relative humidity (RH) and temperature. The device is made of zinc resonators on paper used as transducers, which are coated with beeswax as an encapsulant, and uses konjac as a h...

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Veröffentlicht in:	Proceedings 2024-03, Vol.97 (1), p.74
Hauptverfasser:	James Bourely, Jaemin Kim, Xavier Aeby, Gilberto Siqueira, Gustav Nyström, Oleksandr Vorobyov, Christian Beyer, David Schmid, Danick Briand
Format:	Artikel
Sprache:	eng
Schlagworte:	chipless ecoresorbable electronics humidity radio frequency sensors temperature
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Beschreibung
Zusammenfassung:	Aiming to reduce electronic waste in sensing applications, we report on an eco-friendly printed microstrip line to sense relative humidity (RH) and temperature. The device is made of zinc resonators on paper used as transducers, which are coated with beeswax as an encapsulant, and uses konjac as a humidity sensitive coating. The multi-resonating structure, operating in the S-band, shows reproducible temperature and humidity sensing from 15 °C to 35 °C and 30% to 70% RH with sensitivities up to 1.9 MHz/°C and 2.0 MHz/%RH, respectively. This combination of transducing and sensing materials is promising for the realization of disposable environmental sensors.
ISSN:	2504-3900
DOI:	10.3390/proceedings2024097074