Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T61: Precision Many Body Physics V: Dynamics
11:30 AM–2:30 PM,
Thursday, March 9, 2023
Room: Room 418
Sponsoring
Units:
DCOMP DAMOP DCMP
Chair: Anouar Benali, Argonne National Laboratory
Abstract: T61.00011 : Emergence of geometry-driven topological defects in two-dimensional effectively hyperuniform systems
1:54 PM–2:06 PM
Presenter:
Sungyeon Hong
(Australian Natl University)
Authors:
Sungyeon Hong
(Australian Natl University)
Nicolas Francois
(Australian Natl Univ)
Mohammad Saadatfar
(University of Sydney)
In this work, we investigate emergent structural and dynamical properties of two-dimensional point configurations evolving via Lloyd's algorithm. We demonstrate that the pure geometric process shows glassy dynamics with the appearance of defective landscapes, where pentagonal and heptagonal topological defects bind to form complex structures embedded in large hexagonal domains. We use a measure of structural entropy to identify the hierarchy of locally favoured motifs, which highlights the role of dipole defects in the glassy dynamic. Surprisingly, the emergent dynamics of defects is governed by T1 topological transition, observed in foam structures and biological tissues. The structural and dynamical features in our findings can shed light onto self-organisation in soft matter systems as well as designing topological metamaterials.
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