2016/06/16 by Xiaoxue Bai, Chunyin Qiu, Bai, Xiaoxue +9
Earth and Planetary Sciences · Engineering · Materials Science · #Acoustic Wave Phenomena Research #Classical Physics (physics.class-ph) #FOS: Physical sciences #Metamaterials and Metasurfaces Applications #Underwater Acoustics Research
paper · pdf · doi:10.48550/arxiv.1606.05037
openalex publication_date 2016/06/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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.