Abstract
We present a new model of glass-forming liquids in which free volume fluctuations drive dynamic heterogeneity and diffusion of mobility. Our kinetic model is developed from a microscopic perspective where free volume creation requires existing free volume nearby as a source of mobility; free volume diffusion and destruction is spontaneous by virtue of its own mobility. Simulations indicate "molten" and kinetically arrested "glassy" regions in parameter space, and a critical point where dynamic length and intermittency time scales grow as power laws. Systems near the critical point contain colonies of free volume that propagate around bubbles of glassified material.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3173-3180 |
| Number of pages | 8 |
| Journal | Soft matter |
| Volume | 9 |
| Issue number | 11 |
| DOIs | |
| State | Published - Mar 21 2013 |
All Science Journal Classification (ASJC) codes
- General Chemistry
- Condensed Matter Physics