New flexible silicone-based EEG dry sensor material compositions exhibiting improvements in lifespan, conductivity, and reliability

Yu, YH; Chen, SH; Chang, CL; Lin, CT; Hairston, WD; Mrozek, RA

New flexible silicone-based EEG dry sensor material compositions exhibiting improvements in lifespan, conductivity, and reliability

Yu, YH Chen, SH Chang, CL Lin, CT

Hairston, WD Mrozek, RA

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Publication Type:: Journal Article
Citation:: Sensors (Switzerland), 2016, 16 (11)
Issue Date:: 2016-11-01

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Field	Value	Language
dc.contributor.author	Yu, YH	en_US
dc.contributor.author	Chen, SH	en_US
dc.contributor.author	Chang, CL	en_US
dc.contributor.author	Lin, CT https://orcid.org/0000-0001-8371-8197	en_US
dc.contributor.author	Hairston, WD	en_US
dc.contributor.author	Mrozek, RA	en_US
dc.date.available	2016-10-22	en_US
dc.date.issued	2016-11-01	en_US
dc.identifier.citation	Sensors (Switzerland), 2016, 16 (11)	en_US
dc.identifier.issn	1424-8220	en_US
dc.identifier.uri	http://hdl.handle.net/10453/113456
dc.description.abstract	© 2016 by the authors; licensee MDPI, Basel, Switzerland. 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.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DP150101645
dc.relation.ispartof	Sensors (Switzerland)	en_US
dc.relation.isbasedon	10.3390/s16111826	en_US
dc.subject.classification	Analytical Chemistry	en_US
dc.title	New flexible silicone-based EEG dry sensor material compositions exhibiting improvements in lifespan, conductivity, and reliability	en_US
dc.type	Journal Article
utslib.citation.volume	11	en_US
utslib.citation.volume	16	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	0301 Analytical Chemistry	en_US
utslib.for	0805 Distributed Computing	en_US
utslib.for	0502 Environmental Science and Management	en_US
utslib.for	0602 Ecology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Computer Science
pubs.organisational-group	/University of Technology Sydney/Strength - CAI - Centre for Artificial Intelligence
utslib.copyright.status	open_access
pubs.issue	11	en_US
pubs.publication-status	Published	en_US
pubs.volume	16	en_US

Abstract:

© 2016 by the authors; licensee MDPI, Basel, Switzerland. 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.

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http://hdl.handle.net/10453/113456