Transformation of the corner: A shield cloak and a planar retro-reflector
1 School of Electronic Engineering, Xidian University - Xi'an 710071, PRC
2 School of Electronics and Information Engineering, Beihang University - Beijing 100191, PRC
Received: 4 September 2013
Accepted: 22 October 2013
A metallic sheet, coated with a few blocks of all-dielectric isotropic materials, is presented for creating an illusion or an image of a corner based on quasi-conformal transformation optics. On the one hand, our design is able to generate cloaking effects to conceal objects hiding inside a corner. On the other hand, we propose to use such a planar transformation device to represent a corner reflector that reflects light directly back to its source. The full wave simulation shows our device is capable of operating considerably well in a broad frequency range, and presents only the appearance of a bare corner functioning as a shield cloak or a planar retro-reflector.
PACS: 41.20.Jb – Electromagnetic wave propagation; radiowave propagation / 42.79.Ry – Gradient-index (GRIN) devices
© EPLA, 2013