声学超表面的研究与应用进展

声学超表面是通过合理的设计规则以获得控制声波传播的新型人工结构,为声波的调控和处理提供了新的途径.阐述了声学超表面的相位调制机理,重点论述了包括空间卷绕型、Helmholtz谐振型、薄膜结构型以及其他类型超表面的不同概念和设计原理,并讨论了它们在异常反射/折射、聚焦、自弯曲等方面的相关研究及应用进展.最后,分别从超表面的可调谐性、可设计性和水下调控等方面讨论了声学超表面的发展方向和应用前景.

Research advances of acoustic Metasurfaces

Acoustic metasurface, a novel artificial structure designed based on the fundamental physical principles, is obtained to control acoustic wave propagation by reasonable design rules, which provides a new route for sound wave manipulation. In this paper, the phase modulation mechanism of acoustic metasurface is described, and the research progress of the acoustic metasurfaces, including those based on coiling-up space, Helmholtz-resonator-like, membrance-type structures and other types of metasurface. Finally, the development trend and the application prospect of acoustic metasurfaces are also discussed.