A Novel Method to Probe the Pronounced Growth of Correlation Lengths in an Active Glass-forming Liquids using Elongated Probe

Abstract

The growth of correlation lengths in equilibrium glass-forming liquids near the glass transition is considered a critical finding in the quest to understand the physics of glass formation. These understandings helped us understand various dynamical phenomena observed in supercooled liquids. It is known that at least two different length scales exist - one is of thermodynamic origin, while the other is dynamical in nature. Recent observations of glassy dynamics in biological and synthetic systems where the external or internal driving source controls the dynamics, apart from the usual thermal noise, led to the emergence of the field of active matter. A question of whether the physics of glass formation in these active systems is also accompanied by growing dynamic and static lengths is indeed timely. In this article, we probe the growth of dynamic and static lengths in a model active glass system using rod-like elongated probe particles, an experimentally viable method. We show that the dynamic and static lengths in these non-equilibrium systems grow much more rapidly than their passive counterparts. We then offer an understanding of the violation of the Stokes-Einstein relation and Stokes-Einstein-Debye relation using these lengths via a scaling theory.

References in corpus (27)

• Theoretical perspective on the glass transition and amorphous materials
• Interaction Ruling Animal Collective Behaviour Depends on Topological rather than Metric Distance: Evidence from a Field Study
• Motility-Induced Phase Separation
• Testing Mode-Coupling Theory for a Supercooled Binary Lennard-Jones Mixture I: The van Hove Correlation Function
• Scale-free correlations in bird flocks
• Long-lived Giant Number Fluctuations in a Swarming Granular Nematic
• Direct experimental evidence of a growing length scale accompanying the glass transition
• Theory of Structural Glasses and Supercooled Liquids
• Universal nature of particle displacements close to glass and jamming transitions
• Thermodynamic signature of growing amorphous order in glass-forming liquids
• Nonequilibrium glass transitions in driven and active matter
• Growing length and time scales in glass forming liquids
• Fifth-order susceptibility unveils growth of thermodynamic amorphous order in glass-formers
• Activity controls fragility: A Random First Order Transition Theory for an active glass
• Active glasses
• Efficient swap algorithms for molecular dynamics simulations of equilibrium supercooled liquids
• A theory for the dynamics of dense systems of athermal self-propelled particles
• Nonequilibrium mode-coupling theory for dense active systems of self-propelled particles
• Comparison of Static Length-Scales Characterizing the Glass Transition
• Length scale dependence of the Stokes-Einstein and Adam-Gibbs relations in model glass formers
• Escape of a passive particle from activity-induced energy landscape: Emergence of slow and fast effective diffusion
• Non-Gaussianity of van Hove Function and Dynamic Heterogeneity Length Scale
• Arrested States in Persistent Active Matter: Gelation without Attraction
• Block Analysis for the Calculation of Dynamic and Static Length Scales in Glass-Forming Liquids
• Strong Dynamical Heterogeneity and Universal Scaling in Driven Granular Fluids
• Activity-dependent self-regulation of viscous length scales in biological systems
• Dynamics of Rod like Particles in Supercooled Liquids -- Probing Dynamic Heterogeneity and Amorphous Order