Energy Landscape, Anti-Plasticization and Polydispersity Induced Crossover of Heterogeneity in Supercooled Polydisperse Liquids

Abstract

Polydispersity is found to have a significant effect on the potential energy landscape; the the average inherent structure energy with temperature decreases with polydispersity. Increasing polydispersity at fixed volume fraction decreases the glass transition temperature and the fragility of glass formation analogous to the antiplasticization seen in some polymeric melts. An interesting temperature dependent crossover of heterogeneity with polydispersity is observed at low temperature due to the faster build-up of dynamic heterogeneity at lower polydispersity.

17 pages, 4 figures (Submitted to Phys. Rev. Lett.)

References in corpus (7)

• Mixing effects for the structural relaxation in binary hard-sphere liquids
• On the correlation between fragility and stretching in glassforming liquids
• Equilibrium glassy phase in a polydisperse hard sphere system
• Decoupling phenomena in supercooled liquids: Signatures in the energy landscape
• Molecular dynamics of a dense fluid of polydisperse hard spheres
• Diffusion and viscosity in a supercooled polydisperse system
• Influence of mass polydispersity on dynamics of simple liquids and colloids

Cited by in corpus (18)

• Dependence of the fragility of a glass former on the softness of interparticle interactions
• In Search for Extraterrestrial High Energy Neutrinos
• Revealing the Link between Structural Relaxation and Dynamic Heterogeneity in Glass-Forming Liquids
• Numerical and Theoretical Study of a Monodisperse Hard-Sphere Glass Former
• Impact of size polydispersity on the nature of Lennard-Jones liquids
• Understanding the Dynamics of Glass-forming Liquids with Random Pinning within the Random First Order Transition Theory
• Effect of Energy Polydispersity on the Nature of Lennard-Jones Liquids
• Suppression of the rate of growth of dynamic heterogeneities and its relation to the local structure in a supercooled polydisperse liquid
• Tuning Pairwise Potential Can Control the Fragility of Glass-Forming Liquids: From Tetrahedral Network to Isotropic Soft Sphere Models
• Dynamic heterogeneity in polydisperse systems: A comparative study of the role of local structural order parameter and particle size
• Even strong energy polydispersity does not affect the average structure and dynamics of simple liquids
• Vibrational dynamics and boson peak in a supercooled polydisperse liquid
• $NVU$ view on energy polydisperse Lennard-Jones systems
• Effective structure of a system with continuous polydispersity
• Competing Relaxation Channels in Continuously Polydisperse Fluids: A Mode-Coupling Study
• Non-equilibrium fluctuations and metastability arising from non-additive interactions in dissipative multi-component Rydberg gases
• Active-parameter polydispersity in the 2d ABP Yukawa model
• Active-matter isomorphs in the size-polydisperse Ornstein-Uhlenbeck Lennard-Jones model