Fig. 9.

(a) Temporal profiles of Rayleigh wave signals at different Poisson’s ratios $\nu$ (corresponding to different values of longitudinal wave speed $C_l$) and (b) convergence curve for the ${\Vert l\Vert }^2$ norm of vibration speed as a function of longitudinal wave speed $C_l$. Signal excitation parameters were $d=250\mu \mathrm{m}$ and $T=100\mu \mathrm{s}$ [see Eqs. (3)–(5)].