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Acoustic Metasurfaces
In article number 2208002, Mingxin Xu, Peter V. S. Lee, David J. Collins, and co‐workers present an approach to ultrathin acoustic metasurfaces, using planarized micropillars in a discretized phase array, which can be easily produced by a single‐step etching process. The flexibility of this approach is demonstrated in the production of complex acoustic patterns using acoustic...
Acoustic metasurfaces offer unique capabilities to steer and direct acoustic fields, though these are generally composed of complex 3D structures, complicating their fabrication and applicability to higher frequencies. Here, an ultrathin metasurface approach is demonstrated, wherein planarized micropillars in a discretized phase array are utilized. This subwavelength metasurface is easily produced...
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