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Title: Softness, anomalous dynamics, and fractal-like energy landscape in model cell tissues
Authors: Li, Yan-Wei
Wei, Leon Loh Yeong
Paoluzzi, Matteo
Ciamarra, Massimo Pica
Keywords: Science::Physics
Issue Date: 2021
Source: Li, Y., Wei, L. L. Y., Paoluzzi, M. & Ciamarra, M. P. (2021). Softness, anomalous dynamics, and fractal-like energy landscape in model cell tissues. Physical Review E, 103(2), 022607-.
Project: MOE2019-T1-001-03 (S)
Journal: Physical Review E 
Abstract: Epithelial cell tissues have a slow relaxation dynamics resembling that of supercooled liquids. Yet, they also have distinguishing features. These include an extended short-time subdiffusive transient, as observed in some experiments and recent studies of model systems, and a sub-Arrhenius dependence of the relaxation time on temperature, as reported in numerical studies. Here we demonstrate that the anomalous glassy dynamics of epithelial tissues originates from the emergence of a fractal-like energy landscape, particles becoming virtually free to diffuse in specific phase space directions up to a small distance. Furthermore, we clarify that the stiffness of the cells tunes this anomalous behavior, tissues of stiff cells having conventional glassy relaxation dynamics.
ISSN: 2470-0045
DOI: 10.1103/PhysRevE.103.022607
Rights: © 2021 American Physical Society (APS). All rights reserved. This paper was published in Physical Review E and is made available with permission of American Physical Society (APS).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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