Comparison of acetone gas sensing: prior SAW sensors reported vs. current worka.
| Type | Sensing film | Temperature (°C) | Target gas | Concentration | Ref. |
|---|---|---|---|---|---|
| SAW | Ppy | RT | Acetone | 5.5 ppm | 38 |
| SAW | Cu/SWCNTs | RT | Acetone | 100 ppm | 39 |
| CR | NiO/ZnO | RT | Acetone | 0.8 ppm | 40 |
| CR | ZnO/S, N: GQDs/PANI | RT | Acetone | 5.5 ppm | 41 |
| CR | W18O49/Ti3C2Tx Mxene | RT | Acetone | 0.17 ppm | 42 |
| SAW | QDs/Ppy | RT | Acetone | 0.5 ppm | 43 |
| QCM | PDA-GO | RT | Acetone | 400 ppm | 44 |
| SAW | Suspended graphene | RT | Acetone | 0.008 ppm | This work |
a
CR – Chemo-resistive, RT – room temperature.