*Appendix A.4. Frequency Study*

**Figure A5.** Frequency study for two geometries of cantilever with a distance between the electrodes *d* = 10 μm: geometry optimized for SNR (*b* = 180 μm, *h* = 2 mm) and geometry optimized for *Vout* (*b* = 25 μm, *h* = 300 μm).
