Crossover between athermal jamming and the thermal glass transition of suspensions

M. Dinkgreve, M.A.J. Michels, T.G. Mason, D. Bonn

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Abstract

The non-Newtonian flow behavior of thermal and athermal disordered systems of dispersed uniform particles at high densities have strikingly similar features. By investigating the flow curves of yield-stress fluids and colloidal glasses having different volume fractions, particle sizes, and interactions, we show that both thermal and athermal systems exhibit power-law scaling with respect to the glass and jamming point, respectively, with the same exponents. All yield-stress flow curves can be scaled onto a single universal curve using the Laplace pressure as the stress scale for athermal systems and the osmotic pressure for the thermal systems. Strikingly, the details of interparticle interactions do not matter for the rescaling, showing that they are akin to usual phase transitions of the same universality class. The rescaling allows us to predict the flow properties of these systems from the volume fraction and known material properties.
Original languageEnglish
Article number228001
Number of pages5
JournalPhysical Review Letters
Volume121
Issue number22
DOIs
Publication statusPublished - 28 Nov 2018

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jamming
crossovers
glass
curves
osmosis
scaling laws
interactions
exponents
fluids

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Crossover between athermal jamming and the thermal glass transition of suspensions. / Dinkgreve, M.; Michels, M.A.J.; Mason, T.G.; Bonn, D.

In: Physical Review Letters, Vol. 121, No. 22, 228001, 28.11.2018.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Michels, M.A.J.

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AU - Bonn, D.

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AB - The non-Newtonian flow behavior of thermal and athermal disordered systems of dispersed uniform particles at high densities have strikingly similar features. By investigating the flow curves of yield-stress fluids and colloidal glasses having different volume fractions, particle sizes, and interactions, we show that both thermal and athermal systems exhibit power-law scaling with respect to the glass and jamming point, respectively, with the same exponents. All yield-stress flow curves can be scaled onto a single universal curve using the Laplace pressure as the stress scale for athermal systems and the osmotic pressure for the thermal systems. Strikingly, the details of interparticle interactions do not matter for the rescaling, showing that they are akin to usual phase transitions of the same universality class. The rescaling allows us to predict the flow properties of these systems from the volume fraction and known material properties.

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