Creating bulk ultrastable glasses by random particle bonding

TL;DR

This paper introduces a new simulation-based method to create bulk ultrastable glasses through random particle bonding, overcoming limitations of vapor deposition techniques and broadening potential applications.

Contribution

The authors propose and demonstrate a novel computational approach for producing ultrastable glasses in bulk, applicable to various molecular and soft matter systems.

Findings

Successful generation of ultrastable glasses via random particle bonding in simulations

Method applicable to diverse molecular and soft matter systems

Potential to design a wide range of ultrastable glasses beyond thin films

Abstract

A recent breakthrough in glass science has been the synthesis of ultrastable glasses via physical vapor deposition techniques. These samples display enhanced thermodynamic, kinetic and mechanical stability, with important implications for fundamental science and technological applications. However, the vapor deposition technique is limited to atomic, polymer and organic glass-formers and is only able to produce thin film samples. Here, we propose a novel approach to generate ultrastable glassy configurations in the bulk, via random particle bonding, and using computer simulations we show that this method does indeed allow for the production of ultrastable glasses. Our technique is in principle applicable to any molecular or soft matter system, such as colloidal particles with tunable bonding interactions, thus opening the way to the design of a large class of ultrastable glasses.