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Updated: Oct 11, 2025

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application

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Published on: March 8, 2019

Towards Glasses with Permanent Stability.

Taiki Yanagishima^1,2, John Russo³, Roel P A Dullens^1,4

¹Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, OX1 3QZ, United Kingdom.

Physical Review Letters

|December 3, 2021

Summary

This summary is machine-generated.

Researchers stabilized glasses by eliminating particle clumping. This prevents devitrification, a common issue in industrial applications, leading to more durable, ultrastable glass materials.

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Sequential Application of Glass Coverslips to Assess the Compressive Stiffness of the Mouse Lens: Strain and Morphometric Analyses

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Area of Science:

Materials Science
Condensed Matter Physics
Computational Chemistry

Background:

Glasses are inherently unstable, aging and devitrifying over time due to their nonequilibrium structure.
This instability poses significant challenges for numerous industrial applications requiring durable materials.

Purpose of the Study:

To investigate methods for preventing the devitrification of glasses.
To explore the potential for creating ultrastable glasses through structural homogenization.

Main Methods:

Numerical simulations were employed to model quasi-hard-sphere glasses.
Iterative adjustments to particle sizes were made to achieve uniform local volume fractions.
The effects of these adjustments on structural relaxation and devitrification were analyzed.

Main Results:

Suppressing volume-fraction inhomogeneities completely prevented devitrification and structural relaxation.
Stabilization was achieved even in the presence of crystallites.
A significant homogenization in the number of load-bearing nearest neighbors was observed.

Conclusions:

Uniform local volume fractions are key to preventing glass devitrification.
"Mechanical homogenization" offers a novel route to forming ultrastable glasses.
This study provides a fundamental principle for enhancing glass stability in materials science.