Testing Adam-Gibbs relationship in tapped granular packings
Abstract Disordered granular packings share many similarities with supercooled liquids, particularly in the rapid increase of structural relaxation time within a narrow range of temperature or packing fraction. However, it is unclear whether the dynamics of granular materials align with those of the...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-04-01
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| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-025-02070-9 |
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| author | Xinyu Ai Houfei Yuan Shuyang Zhang Zhikun Zeng Hanyu Li Chengjie Xia Yujie Wang |
| author_facet | Xinyu Ai Houfei Yuan Shuyang Zhang Zhikun Zeng Hanyu Li Chengjie Xia Yujie Wang |
| author_sort | Xinyu Ai |
| collection | DOAJ |
| description | Abstract Disordered granular packings share many similarities with supercooled liquids, particularly in the rapid increase of structural relaxation time within a narrow range of temperature or packing fraction. However, it is unclear whether the dynamics of granular materials align with those of their corresponding thermal hard sphere liquids, and the specific influence of friction in a granular system remains largely unexplored. Here, we experimentally study the slow relaxation and the steady state of monodisperse granular sphere packings under vertical tapping using X-ray tomography. We first calculate the thermodynamic parameters including the effective temperature and configurational entropy under the Edwards’ ensemble of packings of granular spheres with varying friction, and measure their characteristic relaxation time during compaction. We then present a unified picture of the relaxation process in granular systems, in which a generalized Adam-Gibbs relationship is followed. These results clarify the close relationship between granular materials and the ideal frictionless hard sphere model. |
| format | Article |
| id | doaj-art-68acd9a7c9d44faca45e25fc3f2d8b9e |
| institution | OA Journals |
| issn | 2399-3650 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Physics |
| spelling | doaj-art-68acd9a7c9d44faca45e25fc3f2d8b9e2025-08-20T02:28:08ZengNature PortfolioCommunications Physics2399-36502025-04-01811710.1038/s42005-025-02070-9Testing Adam-Gibbs relationship in tapped granular packingsXinyu Ai0Houfei Yuan1Shuyang Zhang2Zhikun Zeng3Hanyu Li4Chengjie Xia5Yujie Wang6School of Physics, Chengdu University of TechnologySchool of Physics and Astronomy, Shanghai Jiao Tong UniversitySchool of Physics and Astronomy, Shanghai Jiao Tong UniversitySchool of Physics and Astronomy, Shanghai Jiao Tong UniversitySchool of Physics, Chengdu University of TechnologyShanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal UniversitySchool of Physics, Chengdu University of TechnologyAbstract Disordered granular packings share many similarities with supercooled liquids, particularly in the rapid increase of structural relaxation time within a narrow range of temperature or packing fraction. However, it is unclear whether the dynamics of granular materials align with those of their corresponding thermal hard sphere liquids, and the specific influence of friction in a granular system remains largely unexplored. Here, we experimentally study the slow relaxation and the steady state of monodisperse granular sphere packings under vertical tapping using X-ray tomography. We first calculate the thermodynamic parameters including the effective temperature and configurational entropy under the Edwards’ ensemble of packings of granular spheres with varying friction, and measure their characteristic relaxation time during compaction. We then present a unified picture of the relaxation process in granular systems, in which a generalized Adam-Gibbs relationship is followed. These results clarify the close relationship between granular materials and the ideal frictionless hard sphere model.https://doi.org/10.1038/s42005-025-02070-9 |
| spellingShingle | Xinyu Ai Houfei Yuan Shuyang Zhang Zhikun Zeng Hanyu Li Chengjie Xia Yujie Wang Testing Adam-Gibbs relationship in tapped granular packings Communications Physics |
| title | Testing Adam-Gibbs relationship in tapped granular packings |
| title_full | Testing Adam-Gibbs relationship in tapped granular packings |
| title_fullStr | Testing Adam-Gibbs relationship in tapped granular packings |
| title_full_unstemmed | Testing Adam-Gibbs relationship in tapped granular packings |
| title_short | Testing Adam-Gibbs relationship in tapped granular packings |
| title_sort | testing adam gibbs relationship in tapped granular packings |
| url | https://doi.org/10.1038/s42005-025-02070-9 |
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