Table 1 Resonator parameters for Fig. 1b (constant height, cross-sectional area and spacing) and the mechanical properties of aluminium.

From: Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces

Height h [mm]

Section A [mm2]

Spacing s [mm]

Young modulusE [GPa]

Density ρ [kg/m3]

2.5

0.025

1.5

69.0

2710.0