Kinetics of vapor-liquid transition of active matter system under quasi one-dimensional confinement
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866917739856134144 |
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| author | A, Parameshwaran Gupta, Bhaskar Sen |
| author_facet | A, Parameshwaran Gupta, Bhaskar Sen |
| contents | We study the kinetics of vapor-liquid phase separation in a quasi one-dimensional confined active matter system using molecular dynamics simulations. Activity is invoked via the Vicsek rule, while passive interaction follows the Lennard-Jones potential. With the system density near the vapor branch, the evolution morphology features disconnected liquid clusters. In the passive limit, coarsening begins with nucleation, followed by an evaporation-condensation growth mechanism, leading to a metastable state without complete phase separation. We aim to understand the impact of Vicsek-like self-propulsion on the structure and growth of these clusters. Our key finding is that Vicsek activity results in a distinct growth mechanism, notably rapid cluster growth and the breakdown of the metastable state through ballistic aggregation. Relevant growth laws are analyzed and explained using appropriate theoretical models. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2408_01195 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Kinetics of vapor-liquid transition of active matter system under quasi one-dimensional confinement A, Parameshwaran Gupta, Bhaskar Sen Soft Condensed Matter We study the kinetics of vapor-liquid phase separation in a quasi one-dimensional confined active matter system using molecular dynamics simulations. Activity is invoked via the Vicsek rule, while passive interaction follows the Lennard-Jones potential. With the system density near the vapor branch, the evolution morphology features disconnected liquid clusters. In the passive limit, coarsening begins with nucleation, followed by an evaporation-condensation growth mechanism, leading to a metastable state without complete phase separation. We aim to understand the impact of Vicsek-like self-propulsion on the structure and growth of these clusters. Our key finding is that Vicsek activity results in a distinct growth mechanism, notably rapid cluster growth and the breakdown of the metastable state through ballistic aggregation. Relevant growth laws are analyzed and explained using appropriate theoretical models. |
| title | Kinetics of vapor-liquid transition of active matter system under quasi one-dimensional confinement |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2408.01195 |