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Frequency shift of dual-channel QCMs in air and deionized water.
| Channel 1 (Hz) | Channel 2 (Hz) | Difference Value (Hz) | ||
|---|---|---|---|---|
| Air | Average value | 42.14 | 48.44 | 6.30 |
| Standard deviation | 16.00 | 20.48 | 10.64 | |
| Deionized water | Average value | 671.86 | 588.77 | 83.09 |
| Standard deviation | 455.23 | 399.47 | 74.57 |
