NonReciprocal Wave Propagation in Space-Time Modulated Media
| العنوان: | NonReciprocal Wave Propagation in Space-Time Modulated Media |
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| المؤلفون: | Ammari, Habib, Cao, Jinghao, Orvehed Hiltunen, Erik |
| المصدر: | Multiscale Modeling & Simulation, 20 (4) |
| بيانات النشر: | Society for Industrial & Applied Mathematics (SIAM), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | nonreciprocal wave propagation, unidirectional wave, subwavelength quasifrequency, time modulation, space-time modulated medium, metamaterial, band gap structure, Ecological Modeling, Modeling and Simulation, General Physics and Astronomy, General Chemistry, Computer Science Applications |
| الوصف: | We show the possibility of achieving nonreciprocal wave propagation in space-time modulated media and give an asymptotic analysis of the nonreciprocity property in terms of the amplitude of the time modulation. Such modulation causes a folding of the band structure of the material, which may induce degenerate points. By breaking time-reversal symmetry, we show that these degeneracies may open into nonsymmetric, unidirectional band gaps. Finally, we illustrate our results by several numerical simulations. ISSN:1540-3459 ISSN:1540-3467 |
| تدمد: | 1540-3467 1540-3459 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c5ab1c031ea17ba0a5a6ef04d5eca86Test https://doi.org/10.1137/21m1449427Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....5c5ab1c031ea17ba0a5a6ef04d5eca86 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15403467 15403459 |
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