Table 4.
Comparison of penetrating neural MEAs.
| MEAs | Geometry | Characteristics | ||||
|---|---|---|---|---|---|---|
| Tip-Coating | Z (kΩ) at 1 kHz | Qinj (mC/cm2) | QCDC (mC/cm2) | Density (Electrodes/1.96 mm2) | ||
| [46,47] | 2D Quasi-3D | Pt, SIROF 1, CNTs 2 | Pt: 125 SIROF: 6 CNTs: 49.7 Electrode tip surface area: 2 × 10−5 cm2 |
Pt: 0.3 SIROF: 2 CNTs 3 | Pt: 4.4 ± 3.1 SIRO: 34.3 ± 21.7 CNTs: 1217.359 nC |
16 |
| [22] | NA | Pt/W 4 microwire | CVD-CNT: 15 PPy-CNT 5: 7 Au-CNT: 50 Electrode tip surface area: 6.5 × 10−5 cm2 |
CVD-CNT: 4 PPy-CNT: 7 Au-CNT: 0.8 |
CVD-CNT: 1743.4 ± 161.7 PPy-CNT: 2920.3 ± 191.4 |
Single probe |
| This work | 3D | Pt, CNTs 6 | Pt: 70 CVD-CNTs: 14 Electrode tip surface area: 1.6 × 10−5 cm2 | Pt: 0.3 CNTs: 10 |
Pt: 21.7 ± 10.2 CNTs: 13020 ± 6510.2 |
25 |
1 SIROF: sputtered iridium oxide film; 2 CNTs: electrochemical deposition; 3 CNTs: cathodal charge storage capacity (QCCSC) was reported instead of charge injection capacity; 4 W: tungsten; 5 PPy-CNT: polypyrrole-CNT; 6 CNTs: direct growth.