Transmission properties of space‐time modulated metamaterials.
- Resource Type
- Article
- Authors
- Ammari, Habib; Cao, Jinghao; Zeng, Xinmeng
- Source
- Studies in Applied Mathematics. Feb2023, Vol. 150 Issue 2, p558-581. 24p.
- Subject
- *METAMATERIALS
*BAND gaps
*AMPLITUDE modulation
*THEORY of wave motion
- Language
- ISSN
- 0022-2526
We prove the possibility of achieving exponentially growing wave propagation in space‐time modulated media and give an asymptotic analysis of the quasifrequencies in terms of the amplitude of the time modulation at the degenerate points of the folded band structure. Our analysis provides the first proof of existence of k‐gaps in the band structures of space‐time modulated systems of subwavelength resonators. [ABSTRACT FROM AUTHOR]