首页|Experimental realization of fractal fretwork metasurface for sound anomalous modulation

Experimental realization of fractal fretwork metasurface for sound anomalous modulation

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Natural creatures and ancient cultures are full of potential sources to provide inspiration for applied sciences.Inspired by the fractal geometry in nature and the fretwork frame in ancient culture,here we design the acoustic metasurface to realize sound anomalous modulation,which manifests itself as an incident-dependent propagation behavior:sound wave propagating in the forward direction is allowed to transmit with high efficiency while in the backward direction is obviously suppressed.We quantitatively investigate the dependences of asymmetric transmission on the propagation direction,incident angle and operating frequency by calculating sound transmittance and energy contrast.This compact fractal fretwork metasurface for acoustic anomalous modulation would promote the development of integrated acoustic devices and expand versatile applications in acoustic communication and information encryption.

acoustic metasurfacefractal geometrysound anomalous modulation

何佳杰、于书萌、江雪、他得安

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Department of Biomedical Engineering,School of Information Science and Technology,Fudan University,Shanghai 200433,China

Academy for Engineering and Technology,Fudan University,Shanghai 200433,China

国家重点研发计划国家自然科学基金国家自然科学基金STCSM Science and Technology Innovation Plan of Shanghai Science and Technology CommissionSTCSM Science and Technology Innovation Plan of Shanghai Science and Technology Commission

2022YFA1404500T22220241203400520ZR140420021JC1400300

2024

10.1088/1674-1056/ad2dcd

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(5)
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