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- W2323812593 abstract "This paper is focused on the study of acoustic metasurface cloaking, based on the use of appropriate ultrathin pseudosurfaces that may act as cloaking devices for a finite range of frequencies. The technique consists in tailoring the appropriate acoustic surface impedance which cancels the scattered field of a diffracting spherical obstacle placed in the trajectory of an impinging acoustical wave. Our numerical simulations of both near and far fields show a significant reduction of scattering cross section for a moderately broad range of frequencies, confirming the effectiveness of surface cloaks (easier to manufacture and less cumbersome than their bulk counterpart). We also go one step further by proposing a realistic structure obtained by quasiperiodically patterning the surface of a spherical layer. The effective properties of the metasurface are obtained in the framework of homogenization theory and confirm this realistic route to surface cloaking for acoustic waves." @default.
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- W2323812593 date "2012-11-12" @default.
- W2323812593 modified "2023-10-03" @default.
- W2323812593 title "Frequency-selective surface acoustic invisibility for three-dimensional immersed objects" @default.
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- W2323812593 doi "https://doi.org/10.1103/physrevb.86.174303" @default.
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