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Title: Translational and rotational critical-like behaviors in the glass transition of colloidal ellipsoid monolayers
Authors: Zheng, Zhongyu
Ni, Ran
Wang, Yuren
Han, Yilong
Keywords: Engineering::Materials
Issue Date: 2021
Source: Zheng, Z., Ni, R., Wang, Y. & Han, Y. (2021). Translational and rotational critical-like behaviors in the glass transition of colloidal ellipsoid monolayers. Science Advances, 7(3), eabd1958-.
Project: MOE2019-T2-2-010
Journal: Science Advances 
Abstract: Critical-like behaviors have been found in translational degrees of freedom near the glass transition of spherical particle systems mainly with local polycrystalline structures, but it is not clear if criticality exists in more general glassy systems composed of nonspherical particles without crystalline structures. Here, through experiments and simulations, we show critical-like behaviors in both translational and rotational degrees of freedom in monolayers of monodisperse colloidal ellipsoids in the absence of crystalline orders. We find rich features of the Ising-like criticality in structure and slow dynamics at the ideal glass transition point ϕ0, showing the thermodynamic nature of glass transition at ϕ0. A dynamic criticality is found at the mode-coupling critical point ϕc for the fast-moving clusters whose critical exponents increase linearly with fragility, reflecting a dynamic glass transition. These results cast light on the glass transition and explain the mystery that the dynamic correlation lengths diverge at two different temperatures.
ISSN: 2375-2548
DOI: 10.1126/sciadv.abd1958
Rights: © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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