Multi cloak invisibility, a new strategy for simultaneous acoustic and electromagnetic invisibility

TL;DR

This paper introduces a novel double invisibility cloaking strategy that simultaneously renders objects undetectable by both electromagnetic and acoustic waves using a combination of four cloaking methods.

Contribution

It presents a new approach for dual electromagnetic and acoustic cloaking, enabling objects to be blind or deaf to detection methods without generalizing across different physical interactions.

Findings

Achieved simultaneous electromagnetic and acoustic invisibility.

Demonstrated dual cloaking modes: deaf and blind.

Proposed a specific combination of cloaking techniques.

Abstract

Based on electromagnetic and acoustic transformation theory, a new strategy has been presented in this article to implement double invisibility cloaking, which has not been done yet. By applying a combination of four conventional cloaking methods, for cloaking an object by electromagnetic and acoustic waves, which are two essential methods for objects detection (sonar, radar, eye, ear, camera ...), the object will be blind or deaf, while it will be undetectable acoustically and electromagnetically simultaneously. In deaf mode structure, the object has an interaction with electromagnetic waves; so it can see what is outside the cloaking structure electromagnetically while it has not any acoustic interaction with the outside, but in blind mode arrangement, as opposed to the deaf arrangement, the acoustic link has turned on while there is no electromagnetic connection. Finally, the proposed approach in this paper does not generalize for any two classes of physics, electrical-mechanical, thermal-mechanical, electrical-thermal, electromagnetic-sonic, etc.