Wave-Freezing and other Phenomena in Temporal Metasurfaces driven by Nonlocal Interactions
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arXiv
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866916204938002432 |
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| author | Deshmukh, Kshiteej J. |
| author_facet | Deshmukh, Kshiteej J. |
| contents | Space-time metamaterials, or materials with properties changing in space and time, have gained a wide-spread interest due to their exotic properties. In this Letter, we propose a novel temporal metasurface of phononic crystals in one and two-dimensions, that combines the use of nonlocal interactions in phononic crystals to customize dispersion relations, and the use of temporal interfaces to transition from a local material to a nonlocal material and vice-versa, to achieve the interesting phenomenon of \textit{wave-freezing}, where the entire propagating wave is stopped without diffusing or spreading. The phononic crystals are modeled using spring-mass systems and we use finite difference calculations to present our numerical results. We also demonstrate other effects observed in such temporal metasurfaces, such as time-reversed waves, and anomalous temporal refraction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_09060 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Wave-Freezing and other Phenomena in Temporal Metasurfaces driven by Nonlocal Interactions Deshmukh, Kshiteej J. Applied Physics Optics Space-time metamaterials, or materials with properties changing in space and time, have gained a wide-spread interest due to their exotic properties. In this Letter, we propose a novel temporal metasurface of phononic crystals in one and two-dimensions, that combines the use of nonlocal interactions in phononic crystals to customize dispersion relations, and the use of temporal interfaces to transition from a local material to a nonlocal material and vice-versa, to achieve the interesting phenomenon of \textit{wave-freezing}, where the entire propagating wave is stopped without diffusing or spreading. The phononic crystals are modeled using spring-mass systems and we use finite difference calculations to present our numerical results. We also demonstrate other effects observed in such temporal metasurfaces, such as time-reversed waves, and anomalous temporal refraction. |
| title | Wave-Freezing and other Phenomena in Temporal Metasurfaces driven by Nonlocal Interactions |
| topic | Applied Physics Optics |
| url | https://arxiv.org/abs/2404.09060 |