Heterogeneous attenuation of sound waves in three-dimensional amorphous solids

Heterogeneous attenuation of sound waves in three-dimensional amorphous solids

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 spatiotemporally hete...

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Main Authors: Mahajan, Shivam, Ciamarra, Massimo Pica
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2024
Subjects:
Physics
Amorphous solids
Sound waves
Online Access:https://hdl.handle.net/10356/178503
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1785032024-06-24T15:34:45Z Heterogeneous attenuation of sound waves in three-dimensional amorphous solids Mahajan, Shivam Ciamarra, Massimo Pica School of Physical and Mathematical Sciences CNRS@CREATE LTD Physics Amorphous solids Sound waves 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 spatiotemporally heterogeneous. It starts in localized 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. Ministry of Education (MOE) Published version We acknowledge support from the Singapore Ministry of Education through the Academic Research Fund Tier 2 (Grant No. MOE-T2EP50221-0016) and Tier 1 (Grant No. RG56/21). 2024-06-24T08:23:23Z 2024-06-24T08:23:23Z 2024 Journal Article Mahajan, S. & Ciamarra, M. P. (2024). Heterogeneous attenuation of sound waves in three-dimensional amorphous solids. Physical Review E, 109(2-1), 024605-. https://dx.doi.org/10.1103/PhysRevE.109.024605 2470-0045 https://hdl.handle.net/10356/178503 10.1103/PhysRevE.109.024605 38491599 2-s2.0-85185398611 2-1 109 024605 en MOE-T2EP50221-0016 RG56/21 Physical Review E © 2024 American Physical Society. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1103/PhysRevE.109.024605 application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Physics
Amorphous solids
Sound waves
spellingShingle Physics
Amorphous solids
Sound waves
Mahajan, Shivam
Ciamarra, Massimo Pica
Heterogeneous attenuation of sound waves in three-dimensional amorphous solids
description 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 spatiotemporally heterogeneous. It starts in localized 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.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Mahajan, Shivam
Ciamarra, Massimo Pica
format Article
author Mahajan, Shivam
Ciamarra, Massimo Pica
author_sort Mahajan, Shivam
title Heterogeneous attenuation of sound waves in three-dimensional amorphous solids
title_short Heterogeneous attenuation of sound waves in three-dimensional amorphous solids
title_full Heterogeneous attenuation of sound waves in three-dimensional amorphous solids
title_fullStr Heterogeneous attenuation of sound waves in three-dimensional amorphous solids
title_full_unstemmed Heterogeneous attenuation of sound waves in three-dimensional amorphous solids
title_sort heterogeneous attenuation of sound waves in three-dimensional amorphous solids
publishDate 2024
url https://hdl.handle.net/10356/178503
_version_ 1814047070694146048

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