Cross over to collective rearrangements near the dry-wet transition in two-dimensional foams

Abstract Liquid foams respond plastically to external perturbations over some critical magnitude. This rearrangement process is directly related to the mechanical properties of the foams, playing a significant role in determining foam lifetime, deformability, elasticity, and fluidity. In this paper,...

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Main Authors: Naoya Yanagisawa, Rei Kurita
Format: Article
Language:English
Published: Nature Portfolio 2023-03-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-023-31577-w
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author Naoya Yanagisawa
Rei Kurita
author_facet Naoya Yanagisawa
Rei Kurita
author_sort Naoya Yanagisawa
collection DOAJ
description Abstract Liquid foams respond plastically to external perturbations over some critical magnitude. This rearrangement process is directly related to the mechanical properties of the foams, playing a significant role in determining foam lifetime, deformability, elasticity, and fluidity. In this paper, we experimentally investigate the rearrangement dynamics of foams near a dry-wet transition. When a foam transforms from a dry state to a wet state, it is found that considering collective events, separated T1 events propagate in dry foams, while T1 events occur simultaneously in wet foams. This cross over to collective rearrangements is closely related to the change in local bubble arrangements and mobility. Furthermore, it is also found that a probability of collective rearrangement events occurring follows a Poisson distribution, suggesting that there is little correlation between discrete collective rearrangement events. These results constitute progress in understanding the dynamical properties of soft jammed systems, relevant for biological and material sciences as well as food science.
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spelling doaj.art-40a4f8a247594c61a32626b83ade9d782023-04-03T05:26:06ZengNature PortfolioScientific Reports2045-23222023-03-011311910.1038/s41598-023-31577-wCross over to collective rearrangements near the dry-wet transition in two-dimensional foamsNaoya Yanagisawa0Rei Kurita1Department of Physics, Tokyo Metropolitan UniversityDepartment of Physics, Tokyo Metropolitan UniversityAbstract Liquid foams respond plastically to external perturbations over some critical magnitude. This rearrangement process is directly related to the mechanical properties of the foams, playing a significant role in determining foam lifetime, deformability, elasticity, and fluidity. In this paper, we experimentally investigate the rearrangement dynamics of foams near a dry-wet transition. When a foam transforms from a dry state to a wet state, it is found that considering collective events, separated T1 events propagate in dry foams, while T1 events occur simultaneously in wet foams. This cross over to collective rearrangements is closely related to the change in local bubble arrangements and mobility. Furthermore, it is also found that a probability of collective rearrangement events occurring follows a Poisson distribution, suggesting that there is little correlation between discrete collective rearrangement events. These results constitute progress in understanding the dynamical properties of soft jammed systems, relevant for biological and material sciences as well as food science.https://doi.org/10.1038/s41598-023-31577-w
spellingShingle Naoya Yanagisawa
Rei Kurita
Cross over to collective rearrangements near the dry-wet transition in two-dimensional foams
Scientific Reports
title Cross over to collective rearrangements near the dry-wet transition in two-dimensional foams
title_full Cross over to collective rearrangements near the dry-wet transition in two-dimensional foams
title_fullStr Cross over to collective rearrangements near the dry-wet transition in two-dimensional foams
title_full_unstemmed Cross over to collective rearrangements near the dry-wet transition in two-dimensional foams
title_short Cross over to collective rearrangements near the dry-wet transition in two-dimensional foams
title_sort cross over to collective rearrangements near the dry wet transition in two dimensional foams
url https://doi.org/10.1038/s41598-023-31577-w
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