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In article number 1801127, Xuefeng Zhu, Jianfeng Zang, and co‐workers describe an ultrathin metasurface (a 650th of the wavelength) that imparts soundwaves with a non‐trivial phase shift and more than 80% transmittance. The thinness of the surface makes It accessible to processing similar to paper‐cutting‐art, thereby introducing a variety of functions, including acoustic vortexes, focusing, and super‐resolution...
Acoustic metasurfaces that can manipulate and control sound waves at 2D subwavelength scales open new avenues to unusual applications, such as asymmetric transmission, super‐resolution imaging, and particle manipulation. However, the long‐standing goals of pushing frontier metamaterials research into real practice are still severely constrained by cumbersome configuration, large acoustic loss, and...
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