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Updated: Jun 5, 2025
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Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
Published on: September 20, 2017
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Replicating physical motion with Minkowskian isorefractive spacetime crystals
Filipa R Prudêncio1,2, Mário G Silveirinha1
1University of Lisbon - Instituto Superior Técnico and Instituto de Telecomunicações, Avenida Rovisco Pais 1, 1049-001 Lisbon, Portugal.
Nanophotonics (Berlin, Germany)
|December 5, 2024
Summary
Isorefractive spacetime crystals with travelling-wave modulation mimic moving materials. Their observer-independent response simplifies calculations, offering a new approach to synthetic Fresnel drag and effective material properties.
Area of Science:
- * Physics
- * Metamaterials
- * Optics
Background:
- * Spacetime crystals (STCs) are engineered materials with time-varying properties.
- * Generic STCs exhibit complex bi-anisotropic coupling in their co-moving frame.
- * Mimicking dynamic material responses is crucial for advanced optical applications.
Purpose of the Study:
- * To introduce and analyze isorefractive spacetime crystals.
- * To demonstrate their observer-independent and isotropic response.
- * To explore their application in calculating band diagrams and synthetic Fresnel drag.
Main Methods:
- * Theoretical analysis of isorefractive STCs with travelling-wave modulation.
- * Derivation of constitutive relations in the laboratory frame.
- * Investigation of Galilean and Lorentz transformations for homogenization.
Main Results:
- * Isorefractive STCs exhibit observer-independent, isotropic constitutive relations.
- * Band diagrams can be calculated more simply in the laboratory frame.
- * Synthetic Fresnel drag is effectively studied using this model.
- * The effective response is independent of Galilean or Lorentz transformations.
Conclusions:
- * Isorefractive STCs provide a simplified yet rigorous model for moving material systems.
- * Their isotropic nature facilitates theoretical analysis and practical applications.
- * This work advances the understanding and design of dynamic metamaterials.
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