2002/06/24 by Sarika Maitra Bhattacharyya, Sarika Bhattacharyya, Biman Bagchi · 1 citation
Chemical Engineering · Engineering · Materials Science · Physics and Astronomy · #Material Dynamics and Properties #Phase Equilibria and Thermodynamics #Rheology and Fluid Dynamics Studies #physics.chem-ph
paper · pdf · doi:10.1103/physrevlett.89.025504
published as Phys. Rev. Lett, volume 89, page 025504-1, (2002) · 4 pages, 3 figures
openalex publication_date 2002/06/24 · arxiv created 2005/01/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The origin of the microscopic motions that lead to stress relaxation in deeply supercooled liquid remains unclear. We show that in such a liquid the stress relaxation is locally anisotropic which can serve as the driving force for the hopping of the system on its free energy surface. However, not all hoppings are equally effective in relaxing the local stress, suggesting that diffusion can decouple from viscosity even at the local level. On the other hand, orientational relaxation is found to be always coupled to stress relaxation.