Microwave seminar | 03 June 2024

Conventional metamaterials, limited to engineering solely in 3D space, have constraints in achieving complex control over electromagnetic waves. However, by introducing ”time” as an additional degree of engineering freedom, new opportunities emerge to unlock the full potential of metamaterials. In this talk, we will explore the transformative capabilities of time-varying material properties in achieving unparalleled wave control. Through temporal and spatiotemporal modulation, we will demonstrate how this approach revolutionizes metamaterials, enabling strong nonreciprocity, perfect wave combining, the generation and expansion of momentum bandgap, and other exotic wave effects.

Main paper/arXiv, related to the seminar, and other references:

1. Photonic time crystals: Theory and applications, Link 
2. Unleashing infinite momentum bandgap using resonant material systems, Link
3. Controlling surface waves with temporal discontinuities of metasurfaces, Link 
4. Nonreciprocity in Bianisotropic Systems with Uniform Time Modulation, Link
5. Metasurface-based realization of photonic time crystals, Link