材料科学
电极
石墨烯
光电子学
拉曼光谱
X射线光电子能谱
扫描电子显微镜
激光器
纳米技术
复合材料
光学
化学工程
化学
物理
工程类
物理化学
作者
Yann Houeix,Denice Gerardo,Francisco J. Romero,Víctor Toral,Lídia Hernandez,Almudena Rivadeneyra,Encarnación Castillo,Diego P. Morales,Noel Rodríguez
标识
DOI:10.1002/aelm.202300767
摘要
Abstract Fractal‐like geometries applied to biosignal‐electrodes design show great potential for enhancing the signal acquisition of sensing systems. This study reports a novel approach for flexible, silver‐free, and dry fractal‐like electrodes based on Laser‐Induced Graphene (LIG) obtained through laser photothermal processing of a commercial polyimide film. This one‐step mask‐less manufacturing process enables the simple fabrication of natural and optimized fractal‐like shapes inspired by actual snowflake patterns. To ensure a reliable and standardized connection to the measurement unit, the electrodes are equipped with a snap terminal. The electrodes are structurally characterized using various techniques including Scanning Electron Microscopy (SEM), Raman spectroscopy, and X‐ray Photoelectron Spectroscopy (XPS). By benchmarking the performance of these electrodes against Ag/AgCl wet commercial electrodes and LIG electrodes shaped as commercial ones, a heart rate‐monitoring accuracy of over 96.8% is achieved, with high specificity, positive prediction, and sensitivity, surpassing the 95.8% achieved by conventional commercial electrodes. These results demonstrate the efficacy of fractal‐based designs in combination with LIG‐based transduction, offering flexible and cost‐effective electrocardiogram (ECG) electrodes with improved performance compared to traditional wet electrodes.
科研通智能强力驱动
Strongly Powered by AbleSci AI