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The Perfect Glass Paradigm: Disordered Hyperuniform Glasses Down to Absolute Zero.

G Zhang1, F H Stillinger1, S Torquato2

  • 1Department of Chemistry, Princeton University, Princeton, 08540, USA.

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Researchers introduce the "perfect glass," a new state of matter. This ideal glass is mechanically stable down to absolute zero, offering a novel understanding of glass physics and amorphous materials.

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Area of Science:

  • Physics
  • Materials Science
  • Chemistry

Background:

  • Glasses are traditionally metastable, existing in a state between liquid and crystal.
  • Understanding amorphous materials and their stability is crucial in materials science.

Purpose of the Study:

  • To introduce and theoretically prove the concept of a "perfect glass."
  • To explore interactions that create mechanically stable amorphous glasses down to absolute zero.

Main Methods:

  • Developed a model perfect glass using soft interactions (two-, three-, and four-body).
  • Modeled perfect glasses as soft-interaction analogs of maximally random jammed (MRJ) packings.

Main Results:

  • Demonstrated that specific interactions can eliminate crystalline and quasicrystalline phases, creating stable amorphous glasses.
  • Perfect glasses exhibit attributes of MRJ states: out of equilibrium, maximally disordered, hyperuniform, and mechanically rigid with infinite moduli.
  • Equilibrium systems of identical particles with the perfect-glass potential show an infinite non-relativistic speed of sound.

Conclusions:

  • Perfect glasses represent a new ideal state of matter, theoretically achievable.
  • This work broadens the fundamental understanding of glass physics and amorphous materials.
  • Perfect glasses offer a pathway to creating exceptionally stable amorphous solids.