Heterogeneous attenuation of sound waves in three-dimensional amorphous solids
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866916094489395200 |
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| author | Mahajan, Shivam Ciamarra, Massimo Pica |
| author_facet | Mahajan, Shivam Ciamarra, Massimo Pica |
| contents | Sound waves are attenuated as they propagate in amorphous materials. We investigate the mechanism driving sound attenuation in the Rayleigh scattering regime by resolving the dynamics of an excited phonon in time and space via numerical simulations. We find sound attenuation is spatiotemporal heterogeneous. It starts in localised regions, which identify soft regions within the material and correlate with low-frequency vibrational modes. As time progresses, the regions where sound is primarily attenuated invade the system via an apparent diffusive process. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_08918 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Heterogeneous attenuation of sound waves in three-dimensional amorphous solids Mahajan, Shivam Ciamarra, Massimo Pica Soft Condensed Matter Sound waves are attenuated as they propagate in amorphous materials. We investigate the mechanism driving sound attenuation in the Rayleigh scattering regime by resolving the dynamics of an excited phonon in time and space via numerical simulations. We find sound attenuation is spatiotemporal heterogeneous. It starts in localised regions, which identify soft regions within the material and correlate with low-frequency vibrational modes. As time progresses, the regions where sound is primarily attenuated invade the system via an apparent diffusive process. |
| title | Heterogeneous attenuation of sound waves in three-dimensional amorphous solids |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2401.08918 |