基于二维超材料的被动相控阵声全息再现
Acoustic Holographic Rendering with Two-dimensional Metamaterial-based Passive Phased Array
摘要：
与光学全息术完全类似的声全息绘制可用于各种应用，从多焦点透镜、多路复用传感和合成三维复杂声场。传统的方法依赖于大量的有源换能器和相移电路。在本文中，我们表明，通过使用无源超材料作为亚波长像素，全息渲染可以实现没有繁琐的电路，只有一个单一的换能器，从而显着降低系统的复杂性。这种基于超材料的全息图可以作为各种先进声波操纵和信号调制的通用平台，从而为声学传感，能量沉积和医学诊断成像带来新的可能性。
英文摘要：
Acoustic holographic rendering in complete analogy with optical holography are useful for various applications, ranging from multi-focal lensing, multiplexed sensing and synthesizing three-dimensional complex sound fields. Conventional approaches rely on a large number of active transducers and phase shifting circuits. In this paper we show that by using passive metamaterials as subwavelength pixels, holographic rendering can be achieved without cumbersome circuitry and with only a single transducer, thus significantly reducing system complexity. Such metamaterial-based holograms can serve as versatile platforms for various advanced acoustic wave manipulation and signal modulation, leading to new possibilities in acoustic sensing, energy deposition and medical diagnostic imaging.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
