220 citations · 646 across the 18 of their papers we have counts for
18 papers
Detecting low-energy quasilocalized excitations in computer glasses
David Richard, Geert Kapteijns, Edan Lerner
Soft, quasilocalized excitations (QLEs) are known to generically emerge in a broad class of disordered solids, and to govern many facets of the physics of glasses, from wave attenu…
Bridging necking and shear-banding mediated tensile failure in glasses
David Richard, Ethen Lund, Jan Schroers +1
The transition between necking-mediated tensile failure of glasses, at elevated temperatures and/or low strain-rates, and shear-banding-mediated tensile failure, at low temperature…
Mechanical excitation and marginal triggering during avalanches in sheared amorphous solids
David Richard, Ahmed Elgailani, Damien Vandembroucq +2
We study plastic strain during individual avalanches in overdamped particle-scale molecular dynamics (MD) and meso-scale elasto-plastic models (EPM) for amorphous solids sheared in…
Bond-space operator disentangles quasi-localized and phononic modes in structural glasses
Julia A Giannini, David Richard, M. Lisa Manning +1
The origin of several emergent mechanical and dynamical properties of structural glasses is often attributed to populations of localized structural instabilities, coined quasilocal…
Brittle to ductile transitions in glasses: Roles of soft defects and loading geometry
David Richard, Edan Lerner, Eran Bouchbinder
Understanding the fracture toughness of glasses is of prime importance for science and technology. We study it here using extensive atomistic simulations in which the interaction p…
Does mesoscopic elasticity control viscous slowing down in glassforming liquids?
Geert Kapteijns, David Richard, Eran Bouchbinder +3
The dramatic slowing down of relaxation dynamics of liquids approaching the glass transition remains a highly debated problem, where the crux of the puzzle resides in the elusive i…
Elastic moduli fluctuations predict wave attenuation rates in glasses
Geert Kapteijns, David Richard, Eran Bouchbinder +1
The disorder-induced attenuation of elastic waves is central to the universal low-temperature properties of glasses. Recent literature offers conflicting views on both the scaling…
A simple and broadly-applicable definition of shear transformation zones
David Richard, Geert Kapteijns, Julia A. Giannini +2
Plastic deformation in amorphous solids is known to be carried by stress-induced localized rearrangements of a few tens of particles, accompanied by the conversion of elastic energ…
Predicting plasticity in disordered solids from structural indicators
D. Richard, M. Ozawa, S. Patinet +16
Amorphous solids lack long-range order. Therefore identifying structural defects -- akin to dislocations in crystalline solids -- that carry plastic flow in these systems remains a…
Nonlinear quasilocalized excitations in glasses. I. True representatives of soft spots
Geert Kapteijns, David Richard, Edan Lerner
Structural glasses formed by quenching a melt possess a population of soft quasilocalized excitations --- often called `soft spots' --- that are believed to play a key role in vari…
Classical Nucleation Theory for the Crystallization Kinetics in Sheared Liquids
David Richard, Thomas Speck
While statistical mechanics provides a comprehensive framework for the understanding of equilibrium phase behavior, predicting the kinetics of phase transformations remains a chall…
Is directed percolation in colloid-polymer mixtures linked to dynamic arrest?
David Richard, C. Patrick Royall, Thomas Speck
Using computer simulations, we study the dynamic arrest in a schematic model of colloid-polymer mixtures combining short-ranged attractions with long-ranged repulsions. The arreste…
Crystallization of hard spheres revisited. II. Thermodynamic modeling, nucleation work, and the surface of tension
David Richard, Thomas Speck
Combining three numerical methods (forward flux sampling, seeding of droplets, and finite size droplets), we probe the crystallization of hard spheres over the full range from clos…
Crystallization of hard spheres revisited. I. Extracting kinetics and free energy landscape from forward flux sampling
David Richard, Thomas Speck
We investigate the kinetics and the free energy landscape of the crystallization of hard spheres from a supersaturated metastable liquid though direct simulations and forward flux…
Coupling between criticality and gelation in "sticky" spheres: A structural analysis
David Richard, James Hallett, Thomas Speck +1
We combine experiments and simulations to study the link between criticality and gelation in sticky spheres. We employ confocal microscopy to image colloid-polymer mixtures, and Mo…
Three-body correlations and conditional forces in suspensions of active hard disks
Andreas Härtel, David Richard, Thomas Speck
Self-propelled Brownian particles show rich out-of-equilibrium physics, for instance, the motility-induced phase separation (MIPS). While decades of studying the structure of liqui…
Nucleation pathway and kinetics of phase-separating active Brownian particles
David Richard, Hartmut Löwen, Thomas Speck
Suspensions of purely repulsive but self-propelled Brownian particles might undergo phase separation, a phenomenon that strongly resembles the phase separation of passive particles…
The role of shear in crystallization kinetics: From suppression to enhancement
David Richard, Thomas Speck
In many technical applications, but also in natural processes like ice nucleation in clouds, crystallization proceeds in the presence of stresses and flows, hence the importance to…