Space-Time Elastic Metamaterials for Zero-Frequency and Zero-Wavenumber Bandgaps
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909603009134592 |
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| author | Lemkalli, Brahim Ali, Alaa Ji, Qingxiang Martínez, Julio Andrés Iglesias Achaoui, Younes Guenneau, Sebastien Craster, Richard Kadic, Muamer |
| author_facet | Lemkalli, Brahim Ali, Alaa Ji, Qingxiang Martínez, Julio Andrés Iglesias Achaoui, Younes Guenneau, Sebastien Craster, Richard Kadic, Muamer |
| contents | We create wave-matter space-time metamaterials using optical trapping forces to manipulate mass-spring chains and create zero-frequency and zero-wavenumber band gaps: the bosonic nature of phonons, and hence this elastodynamic setting, traditionally prohibits either zero-frequency or zero-wavenumber band gaps. Here, we generate zero-frequency gaps using optomechanical interactions within a 3D mass-spring chain by applying an optical trapping force to hold or manipulate a mass in a contactless manner independent of its elastodynamic excitations. Through careful modification of the geometrical parameters in the trapped monoatomic mass-spring chain, we demonstrate the existence of a zero-frequency gap generated by the optical forces on the masses. The precise control we have over the system allows us to drive another set of masses and springs out of phase with its traveling wave thereby creating a zero-wavenumber band gap. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_04012 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Space-Time Elastic Metamaterials for Zero-Frequency and Zero-Wavenumber Bandgaps Lemkalli, Brahim Ali, Alaa Ji, Qingxiang Martínez, Julio Andrés Iglesias Achaoui, Younes Guenneau, Sebastien Craster, Richard Kadic, Muamer Optics Applied Physics Computational Physics We create wave-matter space-time metamaterials using optical trapping forces to manipulate mass-spring chains and create zero-frequency and zero-wavenumber band gaps: the bosonic nature of phonons, and hence this elastodynamic setting, traditionally prohibits either zero-frequency or zero-wavenumber band gaps. Here, we generate zero-frequency gaps using optomechanical interactions within a 3D mass-spring chain by applying an optical trapping force to hold or manipulate a mass in a contactless manner independent of its elastodynamic excitations. Through careful modification of the geometrical parameters in the trapped monoatomic mass-spring chain, we demonstrate the existence of a zero-frequency gap generated by the optical forces on the masses. The precise control we have over the system allows us to drive another set of masses and springs out of phase with its traveling wave thereby creating a zero-wavenumber band gap. |
| title | Space-Time Elastic Metamaterials for Zero-Frequency and Zero-Wavenumber Bandgaps |
| topic | Optics Applied Physics Computational Physics |
| url | https://arxiv.org/abs/2505.04012 |