Ren, Z., He, X., Dong, H., Chen, M., Fang, D. (2026). Pressure‐Independent Acoustic‐Vortex Communication With Enhanced‐Capacity and Cryptographic Information by Free‐Flooded Metasurfaces (Adv. Mater. 34/2026). Advanced Materials. https://doi.org/10.1002/adma.73615