A new strategy to conceal an object from electromagnetic wave

TL;DR

This paper proposes a novel electromagnetic cloaking strategy that guides light through the object without scattering, creating a misleading appearance of the object's position and size to evade detection.

Contribution

It introduces a new cloaking method that causes scattering enhancement and can disguise an object's true features, differing from traditional scattering-reducing cloaks.

Findings

The cloak causes scattering enhancement instead of reduction.

It can alter the perceived position of the object.

The cloak can conceal the true size and location of the object.

Abstract

A new recipe for concealing objects from detection is suggested. Different with traditional cloak which deflects light around the core of the cloak to make the object inside invisible, our cloak guides the light to penetrate the core of the cloak but without striking some region of the cloak shell - the so called folded region. Full wave analytical calculation shows that this cloak will lead to a scattering enhancement instead of scattering reduction in contrast to the traditional cloak; the scattered field distribution can also be changed as if the scatterer is moved from its original position. Such interesting phenomenon indicates the proposed cloak can be used to disguise the true information of the object, e.g. the position, the size, etc, and further mislead the observer and avoid being detected.