Journal
MATERIALS LETTERS
Volume 304, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2021.130637
Keywords
Laser-induced graphene; Graphene oxide; Carbon materials; Sensors
Funding
- Fundamental Research Funds for Central Universities [2019CDJGFGD007]
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The study introduces a highly sensitive graphene-based temperature sensor with high sensitivity, resolution, and advantages of large-scale preparation and low cost. The sensor can be applied in health monitoring, such as skin temperature detection.
In this work, a highly sensitive graphene-based temperature sensor is proposed, which is composed of reduced graphene oxide (rGO) as a temperature-sensitive layer and laser-induced graphene (LIG) as the flexible inter digital electrodes. Benefiting from the negative temperature coefficient of resistance (TCR) of both rGO and LIG, the rGO/LIG-based temperature sensor exhibits a high sensitivity of 1.56% degrees C-1 over a range of 25-45 degrees C with a resolution of 0.2 degrees C. Moreover, LIG is helpful for the large-scale preparation of the graphene-based temperature sensor and reducing the cost of fabrication. The graphene-based temperature sensor will demonstrate potential applications in health monitoring, such as skin temperature.
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