Spacetime Metamaterials-Part I: General Concepts

This article deals with the general concepts underpinning spacetime metamaterials and related systems. It first introduces spacetime metamaterials as a generalization of (bianisotropic) metamaterials, presented in the holistic perspective of direct and inverse spacetime scattering, where spacetime v...

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Vydáno v:IEEE transactions on antennas and propagation Ročník 68; číslo 3; s. 1569 - 1582
Hlavní autoři: Caloz, Christophe, Deck-Leger, Zoe-Lise
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 01.03.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Antennas
Bianisotropy
Diffraction
electromagnetic boundary conditions
inverse prism and chromatic birefringence
Lorentz transformations
Media
Metamaterials
moving media and modulated media
nonreciprocity
photonic transitions
Physics
Relativity
scattering parameters
Spacetime
spacetime crystals
spacetime metamaterials
spacetime mirror and cavity
spacetime reversal
superluminality
theory of relativity
Time-frequency analysis
ISSN:0018-926X, 1558-2221
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Popis
Shrnutí:This article deals with the general concepts underpinning spacetime metamaterials and related systems. It first introduces spacetime metamaterials as a generalization of (bianisotropic) metamaterials, presented in the holistic perspective of direct and inverse spacetime scattering, where spacetime variance and dispersion offer unprecedented medium diversity despite some limitations related to the uncertainty principle. Then, it describes the fundamental physical phenomena occurring in spacetime systems, such as frequency transitions, nonreciprocity, Fizeau dragging, bianisotropy transformation, and superluminality, allowed when the medium moves perpendicularly to the direction of the wave. Next, it extends some principles and tools of relativity physics, particularly a medium-extended version of the spacetime (or Minkowski) diagrams, elaborates a general strategy to compute the fields scattered by spacetime media, and presents a gallery of possible spacetime media, including the spacetime step discontinuity, which constitutes the building brick of any spacetime metamaterial. Finally, the conclusion section provides a list of 16 items that concisely summarizes the key results and teachings of the overall document. The second part establishes the theory and overviews some current and potential applications of spacetime metamaterials.
Bibliografie:ObjectType-Article-1
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ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2019.2944225