Year: 2018
Type: article
Abstract: We theoretically investigate the illusion device designed by a conformal transformation that can render an elliptic defect behave like a flat mirror. Different from illusion devices consisting of the complementary medium and anti‐object with negative permittivity and permeability, our proposed illusion device requires only isotropic positive permittivity medium. It offers a possible route to eliminate the lateral shift in the conventional quasi‐conformal carpet cloak. Interestingly, with the same conformal transformation, we can achieve an impedance‐matched flat absorber by simply varying the shape and the refractive index of the defects. Both the illumination device and the absorber in our design have broad bandwidth, wide‐illumination range and polarization‐insensitive performance.
Source: Nanophotonics
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,995
OpenAlex ID: W3017316089