Table 1.
Electrode Geometry and Impedance (1 kHz)
Geometry | Au Sitea, MΩ N=48 | PEDOT/PSSb, kΩ N=33 | POST Implantc, kΩ N=15 |
---|---|---|---|
Planar 17 × 17 μm | 5.4±3.7 | 240±110 | 380±82 |
Edge 17 × 5 × 2 μm | 6.0±3.1 | 210±64 | 460±72 |
Electrodes cleaned using piranha etch, H2SO4 polishing, and EtOH
Galvanostatic deposition, current density=2.5pA/μ2, charge density= 1nC/μ2
Cleaned in a proteolytic enzyme detergent