Unifying atoms and colloids near the glass transition through bond-order topology
Laura Stricker, Peter M. Derlet, Ahmet Faik Demir\"ors, Hanumantha Rao, Vutukuri, Jan Vermant
TL;DR
This study uses bond-order topology to connect the structure of colloidal suspensions and atomistic simulations, providing a unified framework to understand glass transition phenomena across different systems.
Contribution
It introduces a novel structural mapping method that links colloidal and atomic systems near the glass transition using bond-order topology.
Findings
The mapping temperature exceeds the dynamical glass transition temperature.
Colloidal systems are structurally similar to undercooled liquids in simulations.
The method offers a unified way to quantify relaxation in arrested colloidal systems.
Abstract
In this combined experimental and simulation study, we utilize bond-order topology to quantitatively match particle volume fraction in mechanically uniformly compressed colloidal suspensions with temperature in atomistic simulations. The obtained mapping temperature is above the dynamical glass transition temperature, indicating that the colloidal systems examined are structurally most like simulated undercooled liquids. Furthermore, the structural mapping procedure offers a unifying framework for quantifying relaxation in arrested colloidal systems.
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