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arXiv · 1606.05037

Highly efficient isolation of waterborne sound by an air-sealed metasurface

Xiaoxue Bai·Chunyin Qiu·Xinhua Wen·Shasha Peng·Manzhu Ke·Zhengyou Liu
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Abstract

Underwater sound isolation has been a long-standing fundamental issue in industry and military fields. Starting from a simple theoretical model, here an air-sealed metasurface is proposed to overcome this problem. Comparing with the sample without filling air, the effective impedance of the air-sealed one is greatly reduced and strikingly mismatch with water, accompanying another merit of low sound speed. Deeply suppressed sound transmission (~10-5) through such a metasurface is observed experimentally over a wide range of ultrasonic frequencies and incident angles.

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Xiaoxue Bai, Chunyin Qiu, Xinhua Wen, Shasha Peng, Manzhu Ke, Zhengyou Liu. 2016-06-16. Highly efficient isolation of waterborne sound by an air-sealed metasurface. https://arxiv.org/abs/1606.05037

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