The management of electronics waste and the development of sustainable end-of-life strategies are key aspects of the green evolution of the electronics industry. To address this global issue, we implemented thin-film resistance temperature detectors (RTDs) using green sensing metals, such as Mg, Mo, and Zn, and poly-ether ether ketone (PEEK), as a biocompatible, flexible, and thermally resistant substrate. The environmentally friendly RTDs were characterized in a range of temperature, from 25 °C to 70 °C, showing consistent response and average sensitivities of 1.1×10-1%/°C, 7×10-2 %/°C, and 5.8×10-2%/°C for Mg, Mo, and Zn, respectively. At a constant temperature 25 °C, the effect of humidity variation from 10% to 90% on the resistance of the sensors was observed to be 2.0×10-5 %/relative humidity (RH), 3.4×10-2%/RH, and 5×10-3 %/RH, respectively, for Mg, Mo, and Zn RTDs. Furthermore, the sensor's response to mechanical strain was evaluated by bending the devices down to a 10-mm bending radius. In addition, the dissolution of the green RTDs in water allows the reusability of the substrate for a new fabrication batch, minimizing the amount of electronics waste generated. Through this study, a promising solution to environmental concerns, realizing is endowed for realizing temperature sensors, with applications in green and sustainable wearable systems is demonstrated.
Investigation of Biodegradable Metals for Green and Sustainable Temperature Sensors / Husain, Q. Z.; Corsino, D.; Krik, S.; Stona, A.; Munzenrieder, N.; Cantarella, G.. - In: IEEE JOURNAL ON FLEXIBLE ELECTRONICS. - ISSN 2768-167X. - 3:7(2024), pp. 306-311. [10.1109/JFLEX.2024.3449832]
Investigation of Biodegradable Metals for Green and Sustainable Temperature Sensors
Cantarella G.
2024
Abstract
The management of electronics waste and the development of sustainable end-of-life strategies are key aspects of the green evolution of the electronics industry. To address this global issue, we implemented thin-film resistance temperature detectors (RTDs) using green sensing metals, such as Mg, Mo, and Zn, and poly-ether ether ketone (PEEK), as a biocompatible, flexible, and thermally resistant substrate. The environmentally friendly RTDs were characterized in a range of temperature, from 25 °C to 70 °C, showing consistent response and average sensitivities of 1.1×10-1%/°C, 7×10-2 %/°C, and 5.8×10-2%/°C for Mg, Mo, and Zn, respectively. At a constant temperature 25 °C, the effect of humidity variation from 10% to 90% on the resistance of the sensors was observed to be 2.0×10-5 %/relative humidity (RH), 3.4×10-2%/RH, and 5×10-3 %/RH, respectively, for Mg, Mo, and Zn RTDs. Furthermore, the sensor's response to mechanical strain was evaluated by bending the devices down to a 10-mm bending radius. In addition, the dissolution of the green RTDs in water allows the reusability of the substrate for a new fabrication batch, minimizing the amount of electronics waste generated. Through this study, a promising solution to environmental concerns, realizing is endowed for realizing temperature sensors, with applications in green and sustainable wearable systems is demonstrated.File | Dimensione | Formato | |
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