Figure 4
From: Stretchable Low Impedance Electrodes for Bioelectronic Recording from Small Peripheral Nerves
Stability of PEDOT:PSS/PEG based low-impedance electrodes. (a) Normalized impedance at 1 kHz as a function of immersion time in 38 °C isotonic PBS solution. (b) Normalized impedance at 3%, 5%, 10% and 20% tensile strain as a function of number of repetitive stretching cycles with maximum strain of 40% performed while immersed in PBS. (c) Tip enhanced FTIR spectra obtained on the electrode after different times of immersion in PBS showing the chemical stability of the coating. The intense C-O stretching band of PEG at 1108 cm−1 is clearly visible after soaking the electrodes in PBS for two weeks.
