@misc{10481/89329,
year = {2024},
month = {2},
url = {https://hdl.handle.net/10481/89329},
abstract = {This work presents the optimization of the fabrication procedure for laser-induced graphene (LIG) electrodes intended for biopotentials acquisition. The results presented in this study demonstrate a significant improvement with respect to the performance obtained for other LIG-based electrodes previously reported in the literature. In particular, we propose the use of a galvanometric laser instead of a CNC laser to improve the engraving resolution and the LIG synthesis process, thus enhancing the surface area of the interface skin-electrode. For that, we have studied the resistance of the resulting LIG patterns as a function of the laser parameters (engraving power and scan speed) seeking their optimization. After tunning the laser fabrication process, we have fabricated and characterized electrocardiogram (ECG) electrodes with different surface areas using a commercial silver-based electrode as a reference. Thus, circular electrodes with a diameter of 15 mm, 10 mm and 6.5 mm were used to acquire the ECG on different volunteers using a commercial equipment. The signals acquired were processed afterwards with cutting edge processing techniques to perform a statistical analysis in terms of sensitivity, specificity, positive prediction and accuracy for the detection of QRS complexes. The results demonstrate that the proposed electrodes improve the signal acquisition with respect to the previously reported LIG-based electrodes in terms of noise and do present comparable or even better results than commercial electrodes (even with a smaller surface area) with the additional advantage of not requiring the use of an electrolyte gel},
organization = {This work was supported by the Grant PID2020-117344RB-I00 funded by MCIN/AEI/10.13039/501100011033, also by FEDER/Junta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y Universidades Projects P20_00265 and BRNM-680-UGR20; Project TED2021-129949A-I00 funded by MCIN/AEI/10.13039/501100011033 and by European Union NextGenerationEU/PRTR; In addition, this work was also supported by the Junta de Andalucía – Consejería de Transformación Económica, Industria, Conocimiento y Universidades through the project ProyExcel-00268 as well as by the Spanish Ministry of Sciences and Innovation through the the María Zambrano fellow C21.I4.P1 and the predoctoral grant PRE2021-096886. This work has also been partially funded by the National Council of Science and Technology CONACYT (grant number: 777736) and the Iberoamerican University Association of Postgraduate (AUIP) by means of the program “Mobility Program among all the institutions associated to the AUIP”.},
keywords = {Laser-induced graphene},
keywords = {Electrocardiogram},
keywords = {Flexible electronics},
title = {Optimization of Dry Laser-Induced Graphene (LIG) Electrodes for Electrocardiography (ECG) Signals Monitoring},
doi = {10.1007/s00339-024-07353-6},
author = {Gerardo, Denice and Houeix, Yann and Romero Maldonado, Francisco Javier and Moraila-Martínez, Carmen Lucía and Blasco Pascual, Isabel and Perez-Cadenas, Maria and Morales Santos, Diego Pedro and Rodríguez Santiago, Noel and Salinas Castillo, Alfonso},
}