Fig. 2 Achromatic metasurfaces for ultra-broadband acoustic deflection (IMAGE)

Science China Press

Fig. 2 Achromatic metasurfaces for ultra-broadband acoustic deflection

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a, Inverse-designed achromatic metssurfaces; b, Theoretical and optimized effective indices; c, Transmission coefficients of elements; d, Acoustic wave deflection at 4000 Hz; e, Simulated and measured refraction angles.

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