Flexible Thermistors based on Laser-Induced Graphene from Polyetherimide Houeix, Yann Habboush, Shayma Gómez-Gijón, Sonia Rodríguez Santiago, Noel Romero Maldonado, Francisco Javier Rivadeneyra Torres, Almudena Flexible electronics Thermistor LIG Polyetherimide Sensor characterization This work was partially funded by the Spanish Ministry of Sciences and Innovation through the National Projects: PID2020-117344RB-I00, CNS2022-135915, PRE2021- 096886, TED2021-129949A-I00 funded by MCIN/AEI/ 10.13039/501100011033; and the Ramón y Cajal fellow RYC2019-027457-I. This work has also been funded by the Junta de Andalucía – Consejería de Universidad, Investigación e Innovación through the projects ProyExcel_00268 and P21_00105 through FEDER funds. SEM, Raman and XPS spectroscopy were conducted at the Scientific Instrumentation Center (CIC) of the University of Granada. The importance of temperature sensors has notably increased in recent years, paralleling the surge in demand for flexible and stretchable sensor technologies. In this study, we fabricate and characterize a flexible resistive temperature sensor based on Laser-Induced Graphene (LIG) on Polyetherimide (PEI). The structure and morphology of LIG are thoughtfully characterized proving the formation of a graphitic-based structure. Subsequently, the sensors were evaluated in terms of their temperature response, impact of relative humidity (RH), and bending cycles. The results reveal that the PEI-LIG flexible thermistor exhibits a high sensitivity of -0.159%/°C, with minimal influence from humidity. These findings contribute to advancing the research in inexpensive flexible temperature sensing technology, providing insights into material selection and sensor design for diverse applications. 2024-09-27T06:37:35Z 2024-09-27T06:37:35Z 2024-09-18 journal article Houeix et al. Flexible Thermistors based on Laser-Induced Graphene from Polyetherimide. Flexible and Printed Electronics. 2024 https://hdl.handle.net/10481/95184 10.1088/2058-8585/ad7c5e eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License Attribution-NonCommercial-NoDerivatives 4.0 Internacional IOP Publishing