Table 2.
Sensitivity Measurement of Different Sensor Designs along with Percentage Improvement and Worst Case Standard Deviation from Three Different Measurements of Five Sensorsa
| Measured sensitivity (nA(mg/dl)-1(mm)-2) | % improvement in sensitivity | % increase in surface area from Table 1 | Worst case standard deviation (%) | R2 values | |
|---|---|---|---|---|---|
| Flat electrode | 1.56 | 100% | 100% | 8% | 0.9978 |
| Square pillars | |||||
| Design 1S | 2.31 | 148% | 150% | 8% | 0.9923 |
| Design 2S | 2.90 | 186% | 200% | 10% | 0.9958 |
| Design 3S | 4.45 | 285% | 300% | 8% | 0.9963 |
| Cylindrical pillars | |||||
| Design 1C | 2.21 | 142% | 139% | 9% | 0.9936 |
| Design 2C | 2.73 | 175% | 179% | 8% | 0.9946 |
| Design 3C | 3.59 | 230% | 257% | 9% | 0.9945 |
a
Response is measured at 0.5 V with respect to the Ag/AgCl (reference) electrode.