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Broadband diffuse terahertz wave scattering by flexible metasurface with randomized phase distribution.


ABSTRACT: Suppressing specular electromagnetic wave reflection or backward radar cross section is important and of broad interests in practical electromagnetic engineering. Here, we present a scheme to achieve broadband backward scattering reduction through diffuse terahertz wave reflection by a flexible metasurface. The diffuse scattering of terahertz wave is caused by the randomized reflection phase distribution on the metasurface, which consists of meta-particles of differently sized metallic patches arranged on top of a grounded polyimide substrate simply through a certain computer generated pseudorandom sequence. Both numerical simulations and experimental results demonstrate the ultralow specular reflection over a broad frequency band and wide angle of incidence due to the re-distribution of the incident energy into various directions. The diffuse scattering property is also polarization insensitive and can be well preserved when the flexible metasurface is conformably wrapped on a curved reflective object. The proposed design opens up a new route for specular reflection suppression, and may be applicable in stealth and other technology in the terahertz spectrum.

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC4881048 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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Broadband diffuse terahertz wave scattering by flexible metasurface with randomized phase distribution.

Zhang Yin Y   Liang Lanju L   Yang Jing J   Feng Yijun Y   Zhu Bo B   Zhao Junming J   Jiang Tian T   Jin Biaobing B   Liu Weiwei W  

Scientific reports 20160526


Suppressing specular electromagnetic wave reflection or backward radar cross section is important and of broad interests in practical electromagnetic engineering. Here, we present a scheme to achieve broadband backward scattering reduction through diffuse terahertz wave reflection by a flexible metasurface. The diffuse scattering of terahertz wave is caused by the randomized reflection phase distribution on the metasurface, which consists of meta-particles of differently sized metallic patches a  ...[more]

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