The Anti-Cloak
Huanyang Chen, Xudong Luo, Hongru Ma, C. T. Chan
TL;DR
This paper introduces the 'anti-cloak', a transformation media designed to partially counteract invisibility cloaks, allowing objects to become visible despite being coated with an invisibility cloak.
Contribution
The paper proposes the concept of an anti-cloak to weaken the effectiveness of invisibility cloaks and provides analytical evidence supporting its ability to allow electromagnetic waves to penetrate cloaked objects.
Findings
Anti-cloak enables visibility of cloaked objects
Fourier-Bessel analysis confirms wave penetration
Anti-cloak partially defeats cloaking effect
Abstract
A kind of transformation media, which we shall call the "anti-cloak", is proposed to partially defeat the cloaking effect of the invisibility cloak. An object with an outer shell of "anti-cloak" is visible to the outside if it is coated with the invisible cloak. Fourier-Bessel analysis confirms this finding by showing that external electromagnetic wave can penetrate into the interior of the invisibility cloak with the help of the anti-cloak.
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