Excess entropy scaling for soft particle glasses

Roger T. Bonnecaze (1) , Fardin Khabaz , Lavanya Mohan , Michel Cloitre (2)

1 Dept. of Chemical Engineering and Texas Materials Institute
2 MMC - Laboratoire Matière Molle et Chimie

The transport properties of soft particle glasses, such as dynamic viscosity, normal stress coefficients, and shear-induced diffusivity of its particles, are determined by the microstructure of the suspension under flow. A thermodynamic measure of the microstructure is the excess entropy, which we show here accurately correlates the transport properties of soft particle glasses onto master curves across a wide range of volume fractions, suspending fluid viscosities, particle moduli and shear rates. The excess entropy for soft particle glasses is approximated with the two Surface defects sensitivity during the unfolding of corrugated struts made by powder-bed Additive Manufacturing

Domaines: Chimie; Physique [physics]

Roger T. Bonnecaze, Fardin Khabaz, Lavanya Mohan, Michel Cloitre. Excess entropy scaling for soft particle glasses. Journal of Rheology, 2020, 64 (2), pp.423-431. ⟨10.1122/1.5133852⟩. ⟨hal-02505388⟩