Flat acoustics with soft gradient-index metasurfaces

Here, the authors report an approach for creating various acoustic wavefronts in free space by using soft gradient-index porous metasurfaces. These flat lenses generate steered planar, focused spherical and helical ultrasonic beams in water by manipulating the spatial distribution of the material po...

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Bibliographic Details
Main Authors: Yabin Jin, Raj Kumar, Olivier Poncelet, Olivier Mondain-Monval, Thomas Brunet
Format: Article
Language:English
Published: Nature Publishing Group 2019-01-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-018-07990-5
Description
Summary:Here, the authors report an approach for creating various acoustic wavefronts in free space by using soft gradient-index porous metasurfaces. These flat lenses generate steered planar, focused spherical and helical ultrasonic beams in water by manipulating the spatial distribution of the material porosity.
ISSN:2041-1723