Mathematical operations for acoustic signals based on layered labyrinthine metasurfaces
Mathematical operations for acoustic signals based on layered labyrinthine metasurfaces
复制标题
基于分层迷宫超表面的声信号数学运算
DOI：
10.1063/1.4973705
复制
发表时间：
2017
影响因子：
4
通讯作者：
Liu Xiao Jun
中科院分区：
文献类型：
--
作者：
Zuo Shu Yu;Wei Qi;Cheng Ying;Liu Xiao Jun
声学器件如声学二极管、开关、逻辑门等可以对声信号进行特殊的处理，在声学工程中显示出巨大的潜力。然而，开创性的工作受到简单功能，高损耗和几何复杂性的限制。在这里，我们提出了一个声学模拟计算系统的基础上构建的声学超材料层的超材料表面。该系统可以执行复杂的数学运算，例如对声学信号的空间微分、积分和卷积。所提出的系统提供了一个实用的，高效的，灵活的解决方案，设计紧凑的设备，声学计算应用，信号处理和声波操纵。
Acoustic devices such as acoustic diodes, switches, and logic gates can manipulate acoustic signals extraordinarily and show potential in acoustic engineering. However, pioneering works suffer from the limitations of simple functionality, high losses, and geometrical complexity. Here, we present an acoustic analog computing system based on acoustic metasurfaces constructed from layered labyrinthine metamaterials. The system can perform complex mathematical operations, such as spatial differentiation, integration, and convolution on acoustic signals. The proposed system offers a practical, efficient, and flexible solution of designing compact devices for acoustic computing applications, signal processing, and acoustic wave manipulations.