Quan Jiaqi, Sun Baoyin, Wang Fei, Gao Feng, Fang Xicheng, Gao Lei, Hang Zhihong, Chen Huanyang, Liu Youwen, Jiang Jian-Hua, Fu Yangyang, Xu Yadong
School of Physical Science and Technology and Jiangsu Key Laboratory of Frontier Material Physics and Devices, Soochow University, Suzhou 215006, China.
School of Optical and Electronic Information and Jiangsu (Suzhou) Key Laboratory of Biophotonics, Suzhou City University, Suzhou 215104, China.
Sci Adv. 2025 Jul 11;11(28):eadw1701. doi: 10.1126/sciadv.adw1701. Epub 2025 Jul 9.
Structured acoustic field carrying phase singularities in spatial and temporal domains is fundamentally important for acoustic communications and acoustofluidic manipulations. However, the current approaches to structured sound often have restrictions on the multiplexing capacity of generating sound vortices and lack of dynamic manipulation over them. Here, we unveil an approach to generating structured acoustic waves and achieving remote dynamic control based on the proposed concept of topological-charge (TC) multiplexed metasurface (TCMM). We demonstrate that the TCMM can serve as an efficient device to yield structured sound field with multiple spatial vortex singularities, whose features and physics are entirely determined by the TCs encoded in it. These degrees of freedom can be tuned independently, enabling the dynamic remote control of multiple acoustic vortices and leading to the precise control over their motion. Our findings provide different insights into the generation and control over sound vortices and establish a powerful platform for engineering structured acoustic waves.
在空间和时间域中携带相位奇点的结构化声场对于声学通信和声学流体操纵至关重要。然而，当前生成结构化声音的方法通常对产生声涡旋的复用能力有限制，并且缺乏对它们的动态操纵。在此，我们基于提出的拓扑电荷（TC）复用超表面（TCMM）概念，揭示了一种生成结构化声波并实现远程动态控制的方法。我们证明，TCMM可以作为一种有效的装置，产生具有多个空间涡旋奇点的结构化声场，其特征和物理性质完全由编码在其中的TC决定。这些自由度可以独立调节，实现对多个声涡旋的动态远程控制，并导致对其运动的精确控制。我们的发现为声涡旋的产生和控制提供了不同的见解，并建立了一个用于工程结构化声波的强大平台。
