Converged Wireless Infrastructure with Acoustic Holographic Array

Wireless technologies based on electromagnetic wave are crucial in the modern industry but nonoptimal in electromagnetic-restricted conditions such as underwater applications, where acoustic wave has been proposed as an indispensable approach. However, most of the current acoustic wireless methods could support single wireless function and control single device. A converged wireless infrastructure that simultaneously supports the mainstream wireless functions remains inaccessible for acoustics. The difficulty lies in constructing the dynamic control network consisting of multiple nodes with acoustic method. Here, we develop the converged wireless infrastructure based on the acoustic holographic array, which serves as the central hub of the system. The holographic array allows for simultaneous control of multiple targets and integrates multiple mainstream wireless functions. We experimentally present the acoustic version of the converged wireless system that realizes a series of functions, including (i) selective wireless power transfer, (ii) stable remote monitoring, (iii) dynamic programmable logic control, and (iv) wireless acoustic communication. The wireless system is capable of powering and controlling free-moving devices. The unique immunity against electromagnetic and biological interferences is further demonstrated. The acoustic-based wireless infrastructure provides a route to wireless technologies, especially for those in electromagnetic-restricted conditions.