Research Article

Anomalous Reflection of Acoustic Waves in Air with Metasurfaces at Low Frequency

Figure 3

Simulated snapshots of pressure map for the reflected beams of the metasurfaces with seven different unit spaces ((a)~(g) correspond to 120, 130, 140, 150, 160, 170, and 180 mm, respectively). The metasurfaces are located on the -axis. The incident waves with a Gaussian beam propagate along the negative direction of -axis. The amplitudes of the acoustic pressures are normalized. The reflected angle changes with the unit space.
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