標題: New Flexible Silicone-Based EEG Dry Sensor Material Compositions Exhibiting Improvements in Lifespan, Conductivity, and Reliability
作者: Yu, Yi-Hsin
Chen, Shih-Hsun
Chang, Che-Lun
Lin, Chin-Teng
Hairston, W. David
Mrozek, Randy A.
腦科學研究中心
Brain Research Center
關鍵字: electroencephalography (EEG);scanning electron microscope (SEM);silicone-based dry sensors
公開日期: 1-十一月-2016
摘要: This study investigates alternative material compositions for flexible silicone-based dry electroencephalography (EEG) electrodes to improve the performance lifespan while maintaining high-fidelity transmission of EEG signals. Electrode materials were fabricated with varying concentrations of silver-coated silica and silver flakes to evaluate their electrical, mechanical, and EEG transmission performance. Scanning electron microscope (SEM) analysis of the initial electrode development identified some weak points in the sensors' construction, including particle pull-out and ablation of the silver coating on the silica filler. The newly-developed sensor materials achieved significant improvement in EEG measurements while maintaining the advantages of previous silicone-based electrodes, including flexibility and non-toxicity. The experimental results indicated that the proposed electrodes maintained suitable performance even after exposure to temperature fluctuations, 85% relative humidity, and enhanced corrosion conditions demonstrating improvements in the environmental stability. Fabricated flat (forehead) and acicular (hairy sites) electrodes composed of the optimum identified formulation exhibited low impedance and reliable EEG measurement; some initial human experiments demonstrate the feasibility of using these silicone-based electrodes for typical lab data collection applications.
URI: http://dx.doi.org/10.3390/s16111826
http://hdl.handle.net/11536/132834
ISSN: 1424-8220
DOI: 10.3390/s16111826
期刊: SENSORS
Volume: 16
Issue: 11
起始頁: 0
結束頁: 0
顯示於類別:期刊論文


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