Ag:TiN-Coated Polyurethane for Dry Biopotential Electrodes: From Polymer Plasma Interface Activation to the First EEG Measurements

作者：Pedrosa Paulo; Fiedler Patrique; Lopes Claudia; Alves Eduardo; Barradas Nuno P; Haueisen Jens; Machado Ana V; Fonseca Carlos; Vaz Filipe^*

来源：Plasma Processes and Polymers, 2016, 13(3): 341-354.

DOI：10.1002/ppap.201500063

• Ag-doping
• dry electrodes
• EEG
• interfacial adhesion
• plasma activation

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.

• 出版日期2016-3