Cloaking an acoustic sensor with single-negative materials

Cai, Chao; Zhu, Xuefeng; Xu, Tao; Zou, Xin‐Ye; Liang, Bin; Cheng, Jianchun

doi:10.1016/j.aop.2015.01.020

Cited by 2 publications

(1 citation statement)

References 24 publications

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“…[16] Compared with the DNM device, the invisibility cloak based on SNM would generally be easy to fabricate and effective to work in broader bandwidth. [17] Although the superlens cloaking by Zhu et al is proved to be effective in reducing acoustic scattering from an acoustic sensor, such a device is composed of inhomogeneous anisotropic media which require, even in a reducible way, a large number of isotropic media with different parameters, and thus bringing the difficulty in fabricating it. Later, Zhu et al [18] revised their folding transformation scheme and simplified the cloaking method, in which only three types of SNMs are needed.…”

Section: Introductionmentioning

confidence: 99%

Improving the performance of acoustic invisibility with multilayer structure based on scattering analysis

et al. 2016

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In this paper, acoustic scattering from the system comprised of a cloaked object and the multilayer cloak with only one single pair of isotropic media is analyzed with a recursive numerical method. The designed acoustic parameters of the isotropic cloak media are assumed to be single-negative, and the resulting cloak can reduce acoustic scattering from an acoustic sensor while allowing it to receive external information. Several factors that may influence the performance of the cloak, including the number of layers and the acoustic dissipation of the medium are fully analyzed. Furthermore, the possibility of achieving acoustic invisibility with positive acoustic parameters is proposed by searching the optimum value in the parameter space and minimizing the scattering cross-section.

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Section: Introductionmentioning

confidence: 99%