Atomistic Simulation of Aging and Rejuvenation in Glasses

Journal Article · Mon Feb 14 00:00:00 EST 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.1471· OSTI ID:20215547

Utz, Marcel ^[1]; Debenedetti, Pablo G ^[1]; Stillinger, Frank H ^[2]

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1. Department of Chemical Engineering, Princeton University, Princeton, New Jersey 08544 (United States)
2. Princeton Materials Institute, Princeton University, Princeton, New Jersey 08544 (United States)

Slow structural relaxation (''aging'') observed in many atomic, molecular, and polymeric glasses substantially alters their stress-strain relations and can produce a distinctive yield point. Using Monte Carlo simulation for a binary Lennard-Jones mixture, we have observed these phenomena and their cooling-rate dependences for the first time in an atomistic model system. We also observe that aging effects can be reversed by plastic deformation (''rejuvenation''), whereby the system is expelled from the vicinity of deep minima in its potential energy surface. (c) 2000 The American Physical Society.

• OSTI ID: 20215547
• Journal Information: Physical Review Letters, Vol. 84, Issue 7; Other Information: PBD: 14 Feb 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
GLASS
BINARY MIXTURES
AGING
PLASTICITY
RELAXATION
LENNARD-JONES POTENTIAL
POTENTIAL ENERGY
STRUCTURE FACTORS
COMPUTERIZED SIMULATION
MONTE CARLO METHOD
THEORETICAL DATA