研究目的
To fabricate a novel patch type flexible dry electrode for long-term bio signal monitoring using carbon nanofibers (CNFs) mixed with biocompatible elastomer, aiming to improve signal quality, biocompatibility, and tolerance to sweat and motion effects compared to conventional electrodes.
研究成果
The fabricated CNFs-based dry electrodes exhibit good electrical conductivity, mechanical flexibility up to 20% strain, high-quality ECG signals, tolerance to sweat and motion artifacts, and biocompatibility with cell viability of 75.1% after 48 hours, making them suitable for long-term wearable bio signal monitoring applications.
研究不足
The study may have limitations in scalability for mass production, long-term durability testing beyond the experiments conducted, and potential variations in performance under different environmental conditions not fully explored.
1：Experimental Design and Method Selection:
The study involves fabricating dry electrodes by dispersing CNFs in PDMS (MED6015) using a unique mixing and baking process to optimize electrical performance and uniformity. Wearable patches are made by spin-coating and baking PDMS layers, with electrodes attached using snaps and PET film.
2：Sample Selection and Data Sources:
CNFs (GNF-100) and PDMS (MED6015, MG7-9850) are used as materials. Electrodes with varying CNFs weight fractions (15, 20, 25, 30 wt%) are prepared and tested.
3：List of Experimental Equipment and Materials:
Hot plate for baking, spin coater for coating, mold for electrode shaping, and materials including CNFs, PDMS types, MEP (SFS1000NFX005), and conventional Ag/AgCl electrodes for comparison.
4：Experimental Procedures and Operational Workflow:
Disperse CNFs in PDMS, pour into mold, bake on hot plate; spin-coat non-adhesive and adhesive PDMS on glass wafer, bake; align electrodes with patches.
5：Data Analysis Methods:
Measure electrical conductivity, resistivity under strain, ECG signal quality, sweat and motion effects, and biocompatibility using MTT assay on L-929 cells.
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