Glasses with extraordinary kinetic stability have been made in the laboratory by physical vapour deposition. A computational algorithm that mimics such a deposition process now reveals that deposition at the temperature at which the configurational entropy vanishes leads to ultrastable glasses that are truly amorphous, pack uniformly and have energies that are equivalent to those of equilibrium supercooled liquids.
- Sadanand Singh
- M. D. Ediger
- Juan J. de Pablo