Department of Physics Papers

Document Type

Journal Article

Date of this Version

9-9-2009

Comments

Suggested Citation:
Yunker, P., Zhang, Z., Aptowicz, K.B., Yodh, A.G. (2009). "Irreversible Rearrangements, Correlated Domains, and Local Structure in Aging Glasses." Physical Review Letters.103, 115701.

© 2009 The American Physical Society
http://dx.doi.org/10.1103/PhysRevLett.103.115701

Abstract

Bidisperse colloidal suspensions of temperature-sensitive microgel spheres were quenched from liquid to glass states by a rapid temperature drop, and then the glass was permitted to age. Irreversible rearrangements, events that dramatically change a particle’s local environment, were observed to be closely related to dynamic heterogeneity. The rate of these irreversible events decreased during aging and the the number of particles required to move as part of these irreversible rearrangements increased. Thus, the slowing dynamics of aging were governed by growing, correlated domains of particles. Additionally, short-range order developed, and a spatial decay length scale associated with orientational order was found to grow during aging.

 

Date Posted: 14 December 2010

This document has been peer reviewed.