Publications by Matthieu Wyart

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Universality of jamming of nonspherical particles

Matthieu Wyart, Carolina Brito Carvalho dos Santos

Amorphous packings of nonspherical particles such as ellipsoids and spherocylinders are known to be hypostatic: The number of mechanical contacts between particles is smaller than the number of degrees of freedom, thus violating Maxwell's mechanical stabil ...

NATL ACAD SCIENCES2018

Architecture and coevolution of allosteric materials

Matthieu Wyart, Carolina Brito Carvalho dos Santos, Riccardo Ravasio

We introduce a numerical scheme to evolve functional elastic materials that can accomplish a specified mechanical task. In this scheme, the number of solutions, their spatial architectures, and the correlations among them can be computed. As an example, we ...

National Academy of Sciences2017

Effect of friction on dense suspension flows of hard particles

Matthieu Wyart, Eric DeGiuli

We use numerical simulations to study the effect of particle friction on suspension flows of non-Brownian hard particles. By systematically varying the microscopic friction coefficient mu(p) and the viscous number J, we build a phase diagram that identifie ...

Amer Physical Soc2017

Friction law and hysteresis in granular materials

Matthieu Wyart, Eric DeGiuli

The macroscopic friction of particulate materials often weakens as the flow rate is increased, leading to potentially disastrous intermittent phenomena including earthquakes and landslides. We theoretically and numerically study this phenomenon in simple g ...

National Academy of Sciences2017

Scaling description of non-local rheology

Matthieu Wyart, Jie Lin

The plastic flow of amorphous materials displays non-local effects, characterized by a cooperativity length scale xi. We argue that these effects enter in the more general description of surface phenomena near critical points. Using this approach, we obtai ...

Royal Society of Chemistry2017

Does a Growing Static Length Scale Control the Glass Transition?

Matthieu Wyart

Several theories of the glass transition propose that the structural relaxation time tau(alpha) is controlled by a growing static length scale. that is determined by the free energy landscape but not by the local dynamic rules governing its exploration. We ...

American Physical Society2017

Mean-Field Description of Plastic Flow in Amorphous Solids

Matthieu Wyart, Jie Lin

Failure and flow of amorphous materials are central to various phenomena including earthquakes and landslides. There is accumulating evidence that the yielding transition between a flowing and an arrested phase is a critical phenomenon, but the associated ...

American Physical Society2016

Unsteady flow and particle migration in dense, non-Brownian suspensions

Matthieu Wyart

We present experimental results on dense corn-starch suspensions as examples of non-Brownian, nearly hard particles that undergo continuous and discontinuous shear thickening (DST) at intermediate and high densities, respectively. Our results offer strong ...

Journal Rheology Amer Inst Physics2016

Matthieu Wyart

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Universality of jamming of nonspherical particles

Architecture and coevolution of allosteric materials

Effect of friction on dense suspension flows of hard particles

Friction law and hysteresis in granular materials

Scaling description of non-local rheology

Does a Growing Static Length Scale Control the Glass Transition?

Phase diagram for inertial granular flows

Mean-Field Description of Plastic Flow in Amorphous Solids

Unsteady flow and particle migration in dense, non-Brownian suspensions

Scale-free channeling patterns near the onset of erosion of sheared granular beds

Friction law and hysteresis in granular materials

Universality of jamming of nonspherical particles

Phase diagram for inertial granular flows

Effect of friction on dense suspension flows of hard particles

Scaling description of non-local rheology

Does a Growing Static Length Scale Control the Glass Transition?

Mean-Field Description of Plastic Flow in Amorphous Solids

Unsteady flow and particle migration in dense, non-Brownian suspensions

Scale-free channeling patterns near the onset of erosion of sheared granular beds

Architecture and coevolution of allosteric materials