A general cloak to shift the scattering of different objects

TL;DR

This paper introduces a universal cloaking device using a 'minifying layer' that can shift the scattering of various objects without scaling effects, adaptable for different incident waves and observation directions.

Contribution

The proposed design is a universal cloak capable of shifting the scattering of multiple objects with tunable magnifying or minifying effects, independent of object shape and incident wave direction.

Findings

Finite element simulations confirm the effectiveness of the cloak.

The cloak can achieve tunable magnifying or minifying effects.

The design is applicable to a wide range of objects and conditions.

Abstract

By introducing a concept of "minifying layer", we propose a universal device to hide the position of an object by shifting its scattering without scaling effect for a distance, independent of the direction of incident wave and observation. Unlike the previously reported similar cloaks whose configurations are relevant to the objects to be cloaked. The design here is able to shift the scattering of various objects by one cloak. Moreover, via adjusting the parameter of the "minifying layer", tunable magnifying or even minifying effect on the shifted scattering can also be achieved. The performances of the devices are demonstrated by finite element simulations. This design provides a more flexible way to shift the scattering of an object, and thus can be expected to have wide applications.