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The fitting function, linearity and detecting limitation of three SWCNTs-based gas sensors to hydrogen.
| Sensor units | The fitting function | R2 | Detection limit |
|---|---|---|---|
| Unloaded | y = 0.0148x +0.0574 | 0.994 | × |
| Carboxylated | y = 0.0706x + 0.8921 | 0.9999 | × |
| Pd-doped | y = 1.2757x +0.9729 | 0.9697 | ✓ |
