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arXiv · 1904.07427

Acoustic manipulation through zero-thickness perforated plane with strong-coupling effects

Liu-Ming Hao·Xin-Ye Zou·Bin Liang·Jian-Chun Cheng
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Abstract

How to manipulate acoustic waves through thinner structures is always a challenging problem due to the linear proportional relationship between the structural thickness and the acoustic wavelength. Here, we show the possibility of breaking this relationship by the strong-coupling effects of the radiated waves on the zero-thickness two-dimensional perforated plane, rather than reducing the thickness of the three-dimensional structure by the resonance mechanism of the cavity structure. The strong-coupling effects can be achieved and regulated by the self and mutual radiation between acoustic waves from different holes in the zero-thickness plane. We experimentally demonstrate the effectiveness of our approach by implementing acoustic focusing and holography. Our work introduces a different perspective for manipulating acoustic waves and will enable the application of ultrathin acoustic devices.

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Liu-Ming Hao, Xin-Ye Zou, Bin Liang, Jian-Chun Cheng. 2019-04-16. Acoustic manipulation through zero-thickness perforated plane with strong-coupling effects. https://arxiv.org/abs/1904.07427

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