Table 4 Comparison between the sensitivity of our design with previous published works.
From: High-performance phononic crystal sensing structure for acetone solution concentration sensing
Structure | Sensing material | Sensitivity | Sensor operating frequency |
|---|---|---|---|
Acetone/water 1D phononic crystal sensor13 | Acetone | High concentration 2.04 × 107 Hz | 1.63–1.70 × 1010 Hz |
1D Locally resonant porous phononic crystal32 | CdBr2 concentrations | 47.25 Hz/ppm | 1.70190237–1.7015982 × 108 Hz |
1D Phononic crystal from lead and epoxy multilayer with defect layer from gasoline components33 | n-heptane | 4.36301 × 1011 Hz/(Pa × s) | 9.65 × 108 Hz |
Cyclo-pentane | 2.48596 × 1011 Hz/(Pa × s) | 9.55 × 108 Hz | |
Isooctane | 4.16009 × 1010 Hz/(Pa × s) | 9.34 × 108 Hz | |
Ethanol | 2.0096 × 1010 Hz/(Pa × s) | 9.42 × 108 Hz | |
1D phononic crystal from Aluminum and epoxy multilayer with defect layer from biodiesel fuel34 | Methyl soy ester | 34.14 m−1 | 175,176.8–183,090.2 Hz |
Oxidized soy ester | 35.39 m−1 | 175,132.9–183,009.3 Hz | |
Ethyl soy ester | 36.02 m−1 | 174,826.9–182,788.1 Hz | |
Certified D-2 | 43.88 m−1 | 171,954.4–180,570.9 Hz | |
Methyl laurate | 50.37 m−1 | 169,825.9–179,617.4 Hz | |
2D Phononic crystal locally-resonant cavity of quasi-crystal structure16 | Vinegar | 5300 Hz | 191,872–192,363 Hz |
2D phononic crystals combining gradient cavities and quasi-crystal structures (The present work) | Acetone | High concentration 80,166.67 Hz, 24.61 m−1 | 33,322–43,595 Hz |
