Relationships between structure, memory and flow in sheared disordered materials

Galloway，K. L.1; Teich，E. G.2; Ma，X. G.3,4; Kammer，Ch1; Graham，I. R.5; Keim，N. C.6; Reina，C.1; Jerolmack，D. J.1,7; Yodh，A. G.5; Arratia，P. E.1

2022

10.1038/s41567-022-01536-9

Nature Physics   影响因子和分区

1745-2473

1745-2481

A fundamental challenge regarding disordered solids is predicting macroscopic yield—the point at which elastic behaviour changes to plastic behaviour—from the microscopic arrangements of constituent particles. Yield is accompanied by a sudden and large increase in energy dissipation due to the onset of plastic rearrangements. This suggests that one path to understanding bulk rheology is to map particle configurations to their mode of deformation. Here, we subject two-dimensional dense colloidal systems to oscillatory shear, measure the particle trajectories and bulk rheology, and quantify particle microstructure using excess entropy. Our results reveal a direct relation between excess entropy and energy dissipation that is insensitive to the nature of interactions amongst particles. We use this relation to build a physically informed model that connects rheology to microstructure. Our findings suggest a framework for tailoring the rheological response of disordered materials by tuning microstructural properties.

SCI ; EI

英语

NI期刊

其他

University of Pennsylvania's MRSEC[NSF-DMR-1720530] ; ARO["W911-NF-16-1-0290","NSF-DMR-2003659"] ; NSF[CMMI-2047506]

Physics

Physics, Multidisciplinary

WOS:000770232200006

NATURE PORTFOLIO

20221211811834

Elasticity ; Entropy ; Microstructure

Energy Losses (industrial and residential):525.4 ; Thermodynamics:641.1 ; Materials Science:951

2-s2.0-85126432555

Scopus

1.Department of Mechanical Engineering and Applied Mechanics,University of Pennsylvania,Philadelphia,United States
2.Department of Bioengineering,University of Pennsylvania,Philadelphia,United States
3.Center for Complex Flows and Soft Matter Research,Southern University of Science and Technology,Shenzhen,China
4.Department of Physics,Southern University of Science and Technology,Shenzhen,China
5.Department of Physics and Astronomy,University of Pennsylvania,Philadelphia,United States
6.Department of Physics,Pennsylvania State University,State College,United States
7.Department of Earth and Environmental Science,University of Pennsylvania,Philadelphia,United States

Galloway，K. L.,Teich，E. G.,Ma，X. G.,et al. Relationships between structure, memory and flow in sheared disordered materials[J]. Nature Physics,2022,18:565-570.

Galloway，K. L..,Teich，E. G..,Ma，X. G..,Kammer，Ch.,Graham，I. R..,...&Arratia，P. E..(2022).Relationships between structure, memory and flow in sheared disordered materials.Nature Physics,18,565-570.

Galloway，K. L.,et al."Relationships between structure, memory and flow in sheared disordered materials".Nature Physics 18(2022):565-570.