Dynamical heterogeneity and nonlinear susceptibility in supercooled liquids with short-range attraction

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2007-09-24

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Abstract

Recent work has demonstrated the strong qualitative differences between the dynamics near a glass transition driven by short-ranged repulsion and one governed by short-ranged attraction. Here we study in detail the behavior of nonlinear, higher-order correlation functions that measure the growth of length scales associated with dynamical heterogeneity in both types of systems. We find that this measure is qualitatively different in the repulsive and attractive cases with regards to the wave vector dependence as well as the time dependence of the standard nonlinear four-point dynamical susceptibility. We discuss the implications of these results for the general understanding of dynamical heterogeneity in glass-forming liquids. © 2007 The American Physical Society.

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10.1103/PhysRevLett.99.135701

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Charbonneau, P, and DR Reichman (2007). Dynamical heterogeneity and nonlinear susceptibility in supercooled liquids with short-range attraction. Physical Review Letters, 99(13). 10.1103/PhysRevLett.99.135701 Retrieved from https://hdl.handle.net/10161/12586.

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Charbonneau

Patrick Charbonneau

Professor of Chemistry

Professor Charbonneau studies soft matter. His work combines theory and simulation to understand the glass problem, protein crystallization, microphase formation, and colloidal assembly in external fields.


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