Measurement of growing dynamical length scales and prediction of the jamming transition in a granular material

By Aaron S. Keys, Adam R. Abate, Sharon C. Glotzer, D. Durian. 2007

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Excitations Are Localized and Relaxation Is Hierarchical in Glass-Forming Liquids (2011, unknown): “The exponential distribution of string lengths reported by earlier studies of dynamic heterogeneity in many types of liquids and in granular materials [9, 41, 44, 45, 47, 48] may now be understood as a consequence of the ideal gas statistics obeyed by the elementary excitations.”
Theoretical perspective on the glass transition and amorphous materials (2010, background): “Interestingly, the same phenomenology is found in dense granular materials driven for instance by cyclic shear (Marty and Dauchot, 2005) or air flow (Keys et al., 2007).”
A constitutive model with microstructure evolution for flow of rate-independent granular materials (2011, background): “The jamming transition in dense granular systems profoundly modifies the dynamics and rheology close to the transition (Hébraud & Lequeux 1998; Keys et al. 2007; Majmudar et al. 2007) and may be related to the onset of rate-independent response.”