Abstract
Acoustic metasurfaces offer great opportunities to realize exceptional functionalities and novel devices. However, most traditional metasurfaces manipulate acoustic waves either in the reflected region or in the transmitted region, leaving half of the space unexplored. Here, we propose a full space metasurface, which can simultaneously manipulate acoustic waves in the reflected and transmitted regions. As a proof of concept, three metadevices are designed and demonstrated: multi-directional scattering, asymmetric acoustic scattering and multi-focal focusing. Our proposal exhibits the full space utilization and may offer opportunities in the capabilities of metasurfaces in sound manipulation.
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