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Updated: Jan 26, 2026

Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures

Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures

Published on: June 28, 2017

Zero-temperature glass transition in two dimensions.

Ludovic Berthier¹, Patrick Charbonneau^2,3, Andrea Ninarello⁴

¹Laboratoire Charles Coulomb (L2C), University of Montpellier, CNRS, F-34095, Montpellier, France. ludovic.berthier@umontpellier.fr.

Nature Communications

|April 5, 2019

Summary

Researchers explored the glass transition in two-dimensional liquids using advanced Monte Carlo methods. They discovered a thermodynamic glass transition at zero temperature, marked by an entropy crisis and diverging correlation length, proving its existence in finite dimensions.

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Published on: June 7, 2018

Area of Science:

Condensed matter physics
Statistical mechanics
Materials science

Background:

Liquids transforming into amorphous solids (glasses) have broad applications.
The glass transition is well-understood in infinite dimensions but poorly understood in physical dimensions.
Analytical and experimental approaches face challenges due to fluctuations and accessibility in finite dimensions.

Purpose of the Study:

To investigate the nature of the glass transition in two-dimensional (2D) systems.
To probe equilibrium states in a temperature regime inaccessible to experiments.
To determine if a thermodynamic glass transition exists in finite dimensions.

Main Methods:

Development of advanced Monte Carlo simulation methods.
Application to two-dimensional glass-forming liquids.
Accessing equilibrium states at low temperatures.

Main Results:

Identification of a thermodynamic glass transition in 2D.
The transition occurs at zero temperature.
The transition is characterized by an entropy crisis and a diverging static correlation length.

Conclusions:

A thermodynamic glass transition can occur in finite-dimensional glass-formers.
The study provides direct evidence for a finite-dimensional glass transition.
The findings resolve long-standing questions about the nature of the glass transition.