Al Shboul, Ahmad, Ketabi, Mohsen, Ngai, Jenner H. L., Skaf, Daniella, Rondeau-Gagne, Simon et Izquierdo, Ricardo.
2025.
« Fully printed flexible polystyrene/graphite-based temperature sensor with excellent properties for potential smart applications ».
ACS Omega, vol. 10, nº 4.
pp. 3878-3889.
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Résumé
This study presents an innovative temperature sensor based on a thermistor nanocomposite of graphite (Gt) and polystyrene (PS). The sensor exhibited notable thermal stability and film integrity, offering two distinct linear response regions within the tested temperature range of −10 to 60 °C. It demonstrated a sensitivity of 0.125% °C–1 between −10 and 10 °C, followed by another linear response with a sensitivity of 0.41% °C–1 from 20 to 60 °C. Furthermore, it exhibited a response/recovery time of 0.97/1.3 min at a heating/cooling rate of 60 °C min–1. The sensor maintained minimal baseline drift even when subjected to varying humidity levels. We assessed its mechanical flexibility and stability for hundreds of bending cycles at a bending angle of 30°, adapting to dynamic environmental conditions. The sensor’s thermomechanical test (response to mechanical stress under temperature fluctuations) underscored its adaptability over a temperature range of −10 to 60 °C. Notably, it displayed excellent chemical stability, maintaining consistent performance when subjected to harsh environmental conditions like exposure to corrosive gases and prolonged immersion in tap water. Real-world tests demonstrated its practical utility, including precise temperature measurements in solid objects and breath temperature monitoring. These findings suggest promising applications in healthcare, environmental monitoring, and various IoT applications.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Professeur: | Professeur Izquierdo, Ricardo |
| Affiliation: | Génie électrique |
| Date de dépôt: | 13 févr. 2025 16:42 |
| Dernière modification: | 04 mars 2025 14:53 |
| URI: | https://espace2.etsmtl.ca/id/eprint/30531 |
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