Multi-Order Asymmetric Acoustic Metamaterials with Broad Bandgaps at Subwavelength Scales
Xiaopeng Wang,
Wenjiong Chen,
Sheng Li
Abstract:Noise manipulation at the subwavelength scale remains a challenging problem. To obtain better broadband sound isolation within the subwavelength range, a class of asymmetric acoustic metamaterials (AAMs) based on rotation is proposed, and this class of AAMs can further improve subwavelength sound isolation performance by introducing multi-orders. The influences of changing the alternate propagation length of the coiled channel and the square cavity in the unit cell on the band frequency distribution and the om… Show more
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