Excess free energy of supercooled liquids at disordered walls
  Using a novel thermodynamic integration scheme, we compute the excess free energy, $\gamma$, of a glass-forming, binary Lennard-Jones liquid in contact with a frozen amorphous wall, formed by particles frozen into a similar structure as the liquid. We find that $\gamma$ is non-zero, becoming negative at low temperature. This indicates that the thermodynamics of the system is perturbed by the effect of the amorphous wall. 
Ronald Benjamin and J\"urgen Horbach
cond-mat.stat-mech cond-mat.dis-nn cond-mat.mtrl-sci cond-mat.soft physics.comp-ph