High‐Resolution Manifold Acoustic Holography Based on High‐Pixel‐Array Binary Metasurfaces (Adv. Mater. 20/2025)

Underwater Metasurface In article number 2420229, Yu‐Gui Peng, Teng Ma, Hai‐Rong Zheng, Xue‐Feng Zhu, and co‐workers present a general approach for designing an ultrathin ultrasonic metasurface with a high pixel array to achieve various high‐resolution manifold holograms underwater in the far field, greatly enhancing the information capacity encoded in a single metasurface. Multifunctional meta‐devices based on binary amplitude modulation, which can project holographic acoustic fields at different positions or frequencies on demand, provide more opportunities for exploring practical applications of ultrasonic metasurfaces in biomedical engineering.