Time-dependent high-contrast subwavelength resonators
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Date
2021-11-15
Publication Type
Journal Article
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yes
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Abstract
In the field of metamaterials, many intriguing phenomena arise from having a structure which is periodic in space. In time-dependent structures, conceptually similar properties can arise, which nevertheless have fundamentally different physical implications. In this work, we study time-dependent systems in the context of subwavelength metamaterials. The main result is a capacitance matrix characterization of the band structure, which generalizes previous recent work on static subwavelength metamaterials. This characterization provides both theoretical insight and efficient numerical methods to compute the dispersion relationship of time-dependent structures. We exemplify this in several structures exhibiting interesting wave manipulation properties.
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published
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Journal / series
Volume
445
Pages / Article No.
110594
Publisher
Elsevier
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Subject
Time-dependent materials; Subwavelength resonance; Exceptional points; Dirac singularity at the origin; Subwavelength phononic and photonic crystals
Organisational unit
09504 - Ammari, Habib / Ammari, Habib