Compressing nearly hard sphere fluids increases glass fragility

Abstract

We use molecular dynamics to investigate the glass transition occurring at large volume fraction, phi, and low temperature, T, in assemblies of soft repulsive particles. We find that equilibrium dynamics in the (phi, T) plane obey a form of dynamic scaling in the proximity of a critical point at T=0 and phi=phi_0, which should correspond to the ideal glass transition of hard spheres. This glass point, `point G', is distinct from athermal jamming thresholds. A remarkable consequence of scaling behaviour is that the dynamics at fixed phi passes smoothly from that of a strong glass to that of a very fragile glass as phi increases beyond phi_0. Correlations between fragility and various physical properties are explored.

5 pages, 3 figures; Version accepted at Europhys. Lett

References in corpus (14)

• Is Random Close Packing of Spheres Well Defined?
• Random Packings of Frictionless Particles
• The relationship between fragility, configurational entropy and the potential energy landscape of glass forming liquids
• Critical Scaling of Shear Viscosity at the Jamming Transition
• Probing the equilibrium dynamics of colloidal hard spheres above the mode-coupling glass transition
• Understanding fragility in supercooled Lennard-Jones mixtures. I. Locally preferred structures
• A Landscape Analysis of Constraint Satisfaction Problems
• Disentangling density and temperature effects in the viscous slowing down of glassforming liquids
• The ideal glass transition of Hard Spheres
• Scaling properties of granular rheology near the jamming transition
• Tuning the fragility of a glassforming liquid by curving space
• Comment on "Jamming at zero temperature and zero applied stress: The epitome of disorder"
• Non-Gaussian energy landscape of a simple model for strong network-forming liquids: accurate evaluation of the configurational entropy
• Properties of ideal Gaussian glass-forming systems

Cited by in corpus (87)

• Mean field theory of hard sphere glasses and jamming
• Jamming of Soft Particles: Geometry, Mechanics, Scaling and Isostaticity
• The Physics of the Colloidal Glass Transition
• Perspective: The Glass Transition
• Unified study of glass and jamming rheology in soft particle systems
• The glass transition of dense fluids of hard and compressible spheres
• Non-monotonic temperature evolution of dynamic correlations in glass-forming liquids
• Static point-to-set correlations in glass-forming liquids
• Nonperturbative effect of attractive forces in viscous liquids
• A statistical mechanics framework for static granular matter
• A theory of amorphous packings of binary mixtures of hard spheres
• Probing a liquid to glass transition in equilibrium
• Disentangling glass and jamming physics in the rheology of soft materials
• Geometric interpretation of pre-vitrification in hard sphere liquids
• Universal features of dynamic heterogeneity in supercooled liquids
• Increasing the density melts ultrasoft colloidal glasses
• Dynamic criticality at the jamming transition
• Creep motion of an intruder within a granular glass close to jamming
• Corresponding States of Structural Glass Formers. II
• The role of attractive forces in viscous liquids
• Critical behaviors of sheared frictionless granular materials near jamming transition
• Microscopic theory of the jamming transition of harmonic spheres
• Finite size effects in the dynamics of glass-forming liquids
• Overlap fluctuations in glass-forming liquids
• Equivalence of glass transition and colloidal glass transition in the hard-sphere limit
• Glassiness, Rigidity and Jamming of Frictionless Soft Core Disks
• Inhomogeneous shear flows in soft jammed materials with tunable attractive forces
• Duality in Shearing Rheology Near the Athermal Jamming Transition
• Diverging viscosity and soft granular rheology in non-Brownian suspensions
• A novel approach to numerical measurements of the configurational entropy in supercooled liquids
• Growing length and time scales in a suspension of athermal particles
• Dynamic light scattering measurements in the activated regime of dense colloidal hard spheres
• Dynamic heterogeneities above and below the mode-coupling temperature. Evidence of a dynamic crossover
• From cage-jump motion to macroscopic diffusion in supercooled liquids
• A microscopic mean-field theory of the jamming transition
• Unified phase diagram of reversible-irreversible, jamming and yielding transitions in cyclically sheared soft sphere packings
• Nature of excitations and defects in structural glasses
• Mapping the glassy dynamics of soft spheres onto hard-sphere behavior
• Crossovers in the dynamics of supercooled liquids probed by an amorphous wall
• Thermal fluctuations, mechanical response, and hyperuniformity in jammed solids
• Thinning or thickening? Multiple rheological regimes in dense suspensions of soft particles
• Why glass elasticity affects the thermodynamics and fragility of super-cooled liquids
• Revealing the Link between Structural Relaxation and Dynamic Heterogeneity in Glass-Forming Liquids
• How to "measure" a structural relaxation time that is too long to be measured?
• Anomalous structural evolution of soft particles: Equibrium liquid state theory
• Density-Temperature-Softness Scaling of the Dynamics of Glass-forming Soft-sphere Liquids
• Effects of particle-size ratio on jamming of binary mixtures
• Slow Dynamics of the High Density Gaussian Core Model
• Dynamical Heterogeneity in Lattice Glass Models
• Scaling of the glassy dynamics of soft repulsive particles: a mode-coupling approach
• Long-range spatial correlations of particle displacements and the emergence of elasticity
• Cage Size and Jump Precursors in Glass-Forming Liquids: Experiment and Simulations
• Equilibrium equation of state of a hard sphere binary mixture at very large densities using replica exchange Monte-Carlo simulations
• Improving the prediction of glassy dynamics by pinpointing the local cage
• Critical scalings and jamming in thermal colloidal systems
• Fragility in Glassy Liquids: A Structural Approach Based on Machine Learning
• Understanding the Dynamics of Glass-forming Liquids with Random Pinning within the Random First Order Transition Theory
• Glassy dynamics of a model of bacterial cytoplasm with metabolic activities
• Dynamical and structural signatures of the glass transition in emulsions
• Block Analysis for the Calculation of Dynamic and Static Length Scales in Glass-Forming Liquids
• Disordered Solids Without Well-Defined Transverse Phonons: The Nature of Hard Sphere Glasses
• Rods are less fragile than spheres: Structural relaxation in dense liquids composed of anisotropic particles
• Spatial correlations of elementary relaxation events in glass-forming liquids
• Finite size analysis of zero-temperature jamming transition under applied shear stress
• Segment-Scale, Force-Level Theory of Mesoscopic Dynamic Localization and Entropic Elasticity in Entangled Chain Polymer Liquids
• Athermal Jamming vs Thermalized Glassiness in Sheared Frictionless Particles
• Field theoretic formulation of a mode-coupling equation for colloids
• Jamming Mechanisms and Density Dependence in a Kinetically-Constrained Model
• Critical scaling of jammed system after quench of temperature
• Yield stress in amorphous solids: A mode-coupling theory analysis
• Tuning Pairwise Potential Can Control the Fragility of Glass-Forming Liquids: From Tetrahedral Network to Isotropic Soft Sphere Models
• Calculation of displacement correlation tensor indicating vortical cooperative motion in two-dimensional colloidal liquids
• Different glassy characteristics are related to either caging or dynamical heterogeneity
• Slow dynamics coupled with cluster formation in ultrasoft-potential glasses
• Unjamming in models with analytic pairwise potentials
• Ergodicity breaking transition in a glassy soft sphere system at small but non-zero temperatures
• The correlation between fragility, density and atomic interaction in glass-forming liquids
• Aging or DEAD: origin of the non-monotonic response to weak self-propulsion in active glasses
• Dynamic Equivalence between Soft Star Polymers and Hard Spheres
• Building a "trap model" of glassy dynamics from a local structural predictor of rearrangements
• Can the jamming transition be described using equilibrium statistical mechanics?
• The thermal jamming transition of soft harmonic disks in two dimensions
• Slow and Long-ranged Dynamical Heterogeneities in Dissipative Fluids
• Temperature dependence of the transition packing fraction of thermal jamming in a harmonic soft sphere system
• Scaling the glassy dynamics of active particles: Tunable fragility and reentrance
• Energy landscape description of the clustering transition for active soft spheres
• Athermal Jamming vs. glassy dynamics for particles with exponentially decaying repulsive pair interaction potentials with a cutoff