Issue 3, 2019

Phase-change switching in 2D via soft interactions


We present a new type of phase-change behavior relevant for information storage applications, that can be observed in 2D systems with cluster-forming ability. The temperature-based control of the ordering in 2D particle systems depends on the existence of a crystal-to-glass transition. We perform molecular dynamics simulations of models with soft interactions, demonstrating that the crystalline and amorphous structures can be easily tuned by heat pulses. The physical mechanism responsible for this behavior is a self-assembled polydispersity, that depends on the cluster-forming ability of the interactions. Therefore, the range of real materials that can perform such a transition is very wide in nature, ranging from colloidal suspensions to vortex matter. The state of the art in soft matter experimental setups, controlling interactions, polydispersity and dimensionality, makes it a very fertile ground for practical applications.

Graphical abstract: Phase-change switching in 2D via soft interactions

Article information

Article type
23 Aug 2018
27 Nov 2018
First published
04 Dec 2018
This article is Open Access
Creative Commons BY license

Soft Matter, 2019,15, 355-358

Phase-change switching in 2D via soft interactions

R. Díaz-Méndez, G. Pupillo, F. Mezzacapo, M. Wallin, J. Lidmar and E. Babaev, Soft Matter, 2019, 15, 355 DOI: 10.1039/C8SM01738G

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