Acoustic Wave Splitting and Wave Trapping Designs

Yu Chi Su, Li Heng Ko

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)


Acoustic metasurfaces use the phase gradient of a single layer to reflect/refract waves in any direction. This study shows that other than wave steering, acoustic metasurfaces can exhibit wave splitting or trapping through the geometry design. Previous studies focused on the generalized Snell’s law when developing metasurfaces and attempted to prevent wave leakages. On the contrary, this study exploits the periodicity of metasurfaces to accomplish acoustic wave splitting, which leads to a similar concept to meta-grating. For acoustic wave trapping, we show that through proper arrangements, an acoustic wave can be localized in a specific region without using any boundaries based on the generalized Snell’s law. A design formula is provided to trap waves from any incident angle or at any frequency. The analytical and numerical results are in good agreement, verifying the effectiveness of the proposed concept for wave splitting and trapping. This study shows the versatile applications of acoustic metasurfaces and is useful for interferometry and energy harvesting. [DOI: 10.1115/1.4053713]

期刊Journal of Vibration and Acoustics, Transactions of the ASME
出版狀態Published - 2022 6月

All Science Journal Classification (ASJC) codes

  • 聲學與超音波
  • 材料力學
  • 機械工業


深入研究「Acoustic Wave Splitting and Wave Trapping Designs」主題。共同形成了獨特的指紋。