Physics Colloquium: Liquid Limits: Crystallization, the Glass Transition and Kauzmann's Paradox

Event Details

  • Speaker(s): Peter Poole
  • Date:
  • Time: 4:00 PM
  • Location: MacN 101

Department of Physics
St. Francis Xavier University

Abstract

In this talk I will explore the interrelationship of glass formation and crystal nucleation in supercooled liquids, with a focus on insights obtained from computer simulations.  I'll start with a discussion of metastability as it applies to supercooled liquids, and the thermodynamic and kinetic phenomena that set limits on the range of conditions over which a supercooled liquid can be observed.  Among these limits is the fundamental thermodynamic limit on supercooling first proposed by Kauzmann in 1948, and which remains a subject of debate in liquid-state physics.  I'll then present some recent simulation results exploring the influence of glassy dynamics (in the form of Stokes-Einstein decoupling) on the crystal nucleation process in a deeply supercooled liquid.

Host: Robert Wickham