128 citations · 1.2k across the 131 of their papers we have counts for
99 papers · 1 filter
Mathematical foundations of the non-Hermitian skin effect
Habib Ammari, Silvio Barandun, Jinghao Cao +2
We study the skin effect in a one-dimensional system of finitely many subwavelength resonators with a non-Hermitian imaginary gauge potential. Using Toeplitz matrix theory, we prov…
Design of defected non-hermitian chains of resonator dimers for spatial and spatio-temporal localizations
Habib Ammari, Erik Orvehed Hiltunen, Thea Kosche
The aim of this article is to advance the field of metamaterials by proposing formulas for the design of high-contrast metamaterials with prescribed subwavelength defect mode eigen…
Transmission properties of time-dependent one-dimensional metamaterials
Habib Ammari, Jinghao Cao, Erik Orvehed Hiltunen +1
We solve the wave equation with periodically time-modulated material parameters in a one-dimensional high-contrast resonator structure in the subwavelength regime exactly, for whic…
Edge modes in subwavelength resonators in one dimension
Habib Ammari, Silvio Barandun, Jinghao Cao +1
We present the mathematical theory of one-dimensional infinitely periodic chains of subwavelength resonators. We analyse both Hermitian and non-Hermitian systems. Subwavelength res…
Topological phenomena in honeycomb Floquet metamaterials
Habib Ammari, Thea Kosche
We dedicate this paper to the topological analysis of subwavelength solutions in Floquet metamaterials. This work should be considered as a basis for further investigation on wheth…
Transmission properties of space-time modulated metamaterials
Habib Ammari, Jinghao Cao, Xinmeng Zeng
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 a…