Camouflage devices with simplified material parameters based on conformal transformation acoustics
Camouflage devices with simplified material parameters based on conformal transformation acoustics
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DOI：
10.1016/j.apm.2013.12.005
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发表时间：
2014-08
影响因子：
5
通讯作者：
Chunyu Ren;Z. Xiang
中科院分区：
文献类型：
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作者：
Chunyu Ren;Z. Xiang
由于最近在变换声学的迷人的进展，它是可能的设计有吸引力的设备，可以操纵声波以几乎任何方式的折射率分布。此外，如果变换是共形的，那么所得到的器件可以用普通的各向同性材料而不是奇异的各向异性超材料制成。本文利用保角变换声学原理设计了具有分层均匀结构的伪装装置，该装置可以在声学上产生物体的错觉。我们演示两种设备：一种称为移位器，其使对象出现在与实际位置不同的位置;另一种称为组合器，其使两个对象在分离的位置看起来仅像一个对象。
Owing to the recent fascinating advances in transformation acoustics, it is possible to design the distribution of refractive index of attractive devices that can manipulate acoustic waves in almost any manner. Furthermore, if the transformation is conformal, the resultant devices can be made with ordinary isotropic materials instead of exotic anisotropic metamaterials. In this paper, we use conformal transformation acoustics to design camouflage devices with layered homogeneous structures, which can acoustically generate illusions of objects. We demonstrate two devices: one is called shifter that makes an object appearing at different places from the actual location; another is called combiner that makes two objects at separated locations looking like only one object.