Please use this identifier to cite or link to this item: https://libjncir.jncasr.ac.in/xmlui/handle/10572/1976
Title: Shape of Dynamical Heterogeneities and Fractional Stokes-Einstein and Stokes-Einstein-Debye Relations in Quasi-Two-Dimensional Suspensions of Colloidal Ellipsoids
Authors: Mishra, Chandan K.
Ganapathy, Rajesh
Keywords: Physics
Glass-Forming Liquids
Supercooled Liquids
Structural Relaxation
T-G
Diffusion
Transition
Terphenyl
Breakdown
Rotation
Water
Issue Date: 2015
Publisher: American Physical Society
Citation: Physical Review Letters
114
19
Mishra, C. K.; Ganapathy, R., Shape of Dynamical Heterogeneities and Fractional Stokes-Einstein and Stokes-Einstein-Debye Relations in Quasi-Two-Dimensional Suspensions of Colloidal Ellipsoids. Physical Review Letters 2015, 114 (19), 5.
Abstract: We examine the influence of the shape of dynamical heterogeneities on the Stokes-Einstein (SE) and Stokes-Einstein-Debye (SED) relations in quasi-two-dimensional suspensions of colloidal ellipsoids. For ellipsoids with repulsive interactions, both SE and SED relations are violated at all area fractions. On approaching the glass transition, however, the extent to which this violation occurs changes beyond a crossover area fraction. Quite remarkably, we find that it is not just the presence of dynamical heterogeneities but their change in the shape from stringlike to compact that coincides with this crossover. On introducing a suitable short-range depletion attraction between the ellipsoids, associated with the lack of morphological evolution of dynamical heterogeneities, the extent to which the SE and SED relations are violated remains unchanged even for deep supercooling.
Description: Restricted access
URI: https://libjncir.jncasr.ac.in/xmlui/10572/1976
ISSN: 0031-9007
Appears in Collections:Research Articles (Rajesh Ganapathy)

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