Figure 13.

Typical high-speed camera shadowgraphs showing the peak-to-peak tip deflection (green and red dashed lines) for the lancet (L) and axi-symmetric tips (AX1–3), in water (depth 20 mm), during a half-cycle, at excitation frequency $f_2$ (sampling frequency 310 kHz). Captured greyscale images measured 128 × 128 pixels and the pixel size was $\approx$ 5 µm. A video can be found in Supplementary Information.