Pressure‐Independent Acoustic‐Vortex Communication With Enhanced‐Capacity and Cryptographic Information by Free‐Flooded Metasurfaces (Adv. Mater. 34/2026)

Hydrostatic-Pressure-Immune Underwater Acoustic Communication In their Research Article (DOI: 10.1002/adma.202521718), Hao-Wen Dong and co-workers present a hydrostatic-pressure-immune underwater acoustic communication that can maintain stable functionality in deep sea, unaffected by extreme hydrostatic pressure. Customized free-flooded metasurfaces are employed to modulate and demodulate coaxial vortices carrying multiplexed information, enabling the simultaneous transmission of multiple physical-encoding data streams. By integrating physical wave manipulation with computational encryption, this system offers a secure, high-capacity communication paradigm resilient to eavesdropping, with promising applications in deep-sea exploration and the development of robust marine information systems.