Far field free-space measurement of three dimensional hole –in –Teflon invisibility cloak | Zendy

Ning Wang | Zendy; Yungui Ma | Zendy; Ruifeng Huang | Zendy; C. K. Ong | Zendy

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Far field free-space measurement of three dimensional hole –in –Teflon invisibility cloak

Author(s) -

Ning Wang,

Yungui Ma,

Ruifeng Huang,

C. K. Ong

Publication year - 2013

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.21.005941

Subject(s) - cloak , cloaking , optics , free space , polarization (electrochemistry) , conformal map , metamaterial , scattering , transformation optics , materials science , physics , geometry , chemistry , mathematics

In this paper, we report a fabrication of a three-dimensional (3D) carpet cloak that works for any polarization in free space. Two-dimensional (2D) conformal mapping is first employed and the 3D structure is generated by a rotation of the 2D cloak. The structure of the cloak is hole-in-dielectric. The triangular invisible region has a height of 36 mm (one third of the height of the whole device) and a width of 240 mm. The cloaking effect is examined in free space by measuring the scattering parameters. The results show our device has very good cloaking performance in a wide frequency range from 4 to 10 GHz.

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