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arXiv · 2207.06539

Generalized Space-Time Engineered Modulation (GSTEM) Metamaterials

Christophe Caloz·Zoé-Lise Deck-Léger·Amir Bahrami·Oscar Céspedes Vicente·Zhiyu Li
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Abstract

This article presents a global and generalized perspective of electrodynamic meta-materials formed by space and time engineered modulations, which we name Generalized Space-Time Engineered Modulation (GSTEM) Metamaterials, or GSTEMs. In this perspective, it describes metamaterials from a unified spacetime viewpoint and introduces accelerated metamaterials as an extra type of dynamic metamaterials. First, it positions GSTEMs in the even broader context of electrodynamic systems that include (non-modulated) moving sources in vacuum and moving bodies, explains the difference between the moving-matter nature of the latter and the moving-perturbation nature of GSTEMs, and enumerates the different types of GSTEMs considered, namely Space EMs (SEMs), Time EMs (TEMs), Uniform Space-Time EMs (USTEMs) and Accelerated Space-Time EMs (ASTEMs). Next, it establishes the physics of the related interfaces, which includes direct-spacetime scattering and inverse-spacetime transition transformations. Then, it exposes the physics of the GSTEM metamaterials formed by stacking these interfaces and homogenizing the resulting crystals; this includes an original explanation of light deflection by USTEMs as being a spacetime weighted averaging phenomenon and the demonstration of ASTEM light curving and black-hole light attraction. Finally, it discusses some future prospects. Useful complementary information and animations are provided in the Supplementary Material.

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Christophe Caloz, Zoé-Lise Deck-Léger, Amir Bahrami, Oscar Céspedes Vicente, Zhiyu Li. 2022-07-23. Generalized Space-Time Engineered Modulation (GSTEM) Metamaterials. https://arxiv.org/abs/2207.06539

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