Figure 1.

Periodic array of plates decorated at their endings with spacing $\ell =1$, height $h_{\mathrm{P}}$, and thickness ${\phi }_{\mathrm{P}}\ell$; the substrate occupying a half-space is surmounted by a guiding layer of thickness $h_{\mathrm{L}}$ able to support Love waves. The insets show a zoom on the two endings with heterogeneity surfaces ${\mathcal{S}}_{\mathrm{t}}={\phi }_{\mathrm{t}}{h}_{\mathrm{t}}$ and ${\mathcal{S}}_{\mathrm{b}}={\phi }_{\mathrm{b}}{h}_{\mathrm{b}}$.