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Correlation of impedance and effective electrode area of chondroitin sulphate doped PEDOT modified electrodes

Journal Article


Abstract


  • Neural electrode arrays were coated with PEDOT doped with chondroitin sulphate. The impedance of the individually addressable microelectrodes were measured and fit with a 2 time constant equivalent circuit. The typically reported impedance at 1 kHz was significantly reduced with very thin coatings, but showed no correlation with effective electrode area. The impedance and phase angle at low frequencies was correlated with the effective electrode area. The charge density of the electrode was also correlated with the linear diffusion electroactive area.

Publication Date


  • 2016

Citation


  • Harris, A. R., Molino, P. J., Paolini, A. G. & Wallace, G. G. (2016). Correlation of impedance and effective electrode area of chondroitin sulphate doped PEDOT modified electrodes. Synthetic Metals, 222 338-343.

Scopus Eid


  • 2-s2.0-85002044900

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2410

Number Of Pages


  • 5

Start Page


  • 338

End Page


  • 343

Volume


  • 222

Place Of Publication


  • Switzerland

Abstract


  • Neural electrode arrays were coated with PEDOT doped with chondroitin sulphate. The impedance of the individually addressable microelectrodes were measured and fit with a 2 time constant equivalent circuit. The typically reported impedance at 1 kHz was significantly reduced with very thin coatings, but showed no correlation with effective electrode area. The impedance and phase angle at low frequencies was correlated with the effective electrode area. The charge density of the electrode was also correlated with the linear diffusion electroactive area.

Publication Date


  • 2016

Citation


  • Harris, A. R., Molino, P. J., Paolini, A. G. & Wallace, G. G. (2016). Correlation of impedance and effective electrode area of chondroitin sulphate doped PEDOT modified electrodes. Synthetic Metals, 222 338-343.

Scopus Eid


  • 2-s2.0-85002044900

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2410

Number Of Pages


  • 5

Start Page


  • 338

End Page


  • 343

Volume


  • 222

Place Of Publication


  • Switzerland