Bulletin of the American Physical Society
Mid-Atlantic Section 2022 Meeting
Volume 67, Number 20
Friday–Sunday, December 2–4, 2022; University Park, PA, Pennsylvania State University
Session C02: Quantum Materials and Nanostructures I
9:00 AM–11:10 AM,
Saturday, December 3, 2022
Pennsylvania State University
Room: Osmond 104
Chair: Wilson Yanez, Pennsylvania State University
Abstract: C02.00006 : Exploring the universal nucleation behaviour and anomalies in sheared supercooled liquids
10:58 AM–11:10 AM
Presenter:
Amrita Goswami
(Science Institute, University of Iceland)
Author:
Amrita Goswami
(Science Institute, University of Iceland)
We have formulated a modified Classical Nucleation Theory (called shear-CNT), explicitly incorporating the shear rate as a dependent variable. Shear-CNT enables us to examine the sheared nucleation behaviour of several systems---water, Lennard-Jones and hard-spheres over a wide range of supercoolings and shear rates inaccessible to brute-force MD. Our results reveal that the variation of the nucleation rate with shear is universal.
We show that water has an anomalous non-monotonic sheared nucleation temperature dependence, which originates from the violation of the Stokes-Einstein relation. The results suggest that, in general, any system violating the SE relation (including glass-forming liquids, and simple liquids near the glass transition) will exhibit the same anomaly.
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