Journal
PLASMA PROCESSES AND POLYMERS
Volume 13, Issue 3, Pages 341-354Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.201500063
Keywords
Ag-doping; dry electrodes; EEG; interfacial adhesion; plasma activation
Funding
- FEDER funds through the program COMPETE - Programa Operacional Factores de Competitividade
- FCT - Fundacao para a Ciencia e a Tecnologia [PEst-C/EME/UI0285/2011, PTDC/SAU-ENB/116850/2010, PTDC/CTM-NAN/112574/2009, 27306UA]
- FCT [SFRH/BD/70035/2010]
- German Federal Ministry of Education and Research project [03IPT605A]
- FP7-People Marie Curie IAPP project [610950]
- German Academic Exchange Services [D/57036536]
- Fundação para a Ciência e a Tecnologia [PTDC/SAU-ENB/116850/2010, SFRH/BD/70035/2010] Funding Source: FCT
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Several plasma treatments using argon, oxygen, and nitrogen are studied in order to increase the interfacial adhesion of the polyurethane/Ag:TiN system to be used as biopotential electrodes. The optimized plasma treatments conditions (100W, 15min, regardless of the gas) promote a steep decrease of the water contact angle values. The observed chemical and topographic alterations translate into excellent polyurethane/Ag:TiN interfacial adhesion of the plasma treated samples. The in-service validation of the proposed Ag:TiN-coated PU multipin electrodes is performed by acquiring EEG signals in parallel with the standard wet Ag/AgCl electrodes. No considerable differences are found in terms of shape, amplitude, and spectral characteristics of the signals when comparing reference wet and dry electrodes.
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