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Summary of surface sensitive biofilm sensors
| Sensor type (reference) | Surface material (area) | Penetration depth (nm) | Detection range (cells/cm2) |
|---|---|---|---|
| Tapered optical fiber (34) | SiO2 (0.17 μm2) | 420 | 6 × 103 to 6 × 107 |
| Plasmonic nanohole arrays (35) | Au (0.01 mm2) | 180 | 2 × 103 to 2 × 105 |
| Photonic crystal resonance | Si (3 mm2) | 189 | 3 × 103 to 1.2 × 107a |
| Grating-coupled planar optical waveguide (37) | Polystyrene (8 mm2) | 592 | 6 × 103 to 1.2 × 106 |
Calculated detection range.
