Bianisotropic Acoustic Metasurface for Surface-Wave-Enhanced Wavefront Transformation

Journal Article (Journal Article)

Recent advances in metasurfaces have shown that efficient wavefront transformation can be obtained by carefully designing the bianisotropic response of the metasurfaces. However, as will be shown in this paper, applying such a scheme for complicated wavefront transformations will lead to nonreciprocal local response, which is difficult to realize physically, if the field is not designed properly. In this paper, we identify the local power conservation requirement and introduce surface waves into the scattered field to meet such requirements. Based on such a scheme, we develop a bianisotropic metasurface design approach for near-perfect arbitrary beam splitting and anomalous reflection. Such a passive and reciprocal design approach enables experimental demonstration of surface-wave-enhanced wavefront transformation.

Full Text

Duke Authors

Cited Authors

  • Li, J; Song, A; Cummer, SA

Published Date

  • October 8, 2020

Published In

Volume / Issue

  • 14 / 4

Electronic International Standard Serial Number (EISSN)

  • 2331-7019

Digital Object Identifier (DOI)

  • 10.1103/PhysRevApplied.14.044012

Citation Source

  • Scopus