A clustering analysis of structural heterogeneity in supercooled liquids

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• Robert Jack
• Monday 27 April 2020, 16:30-17:00
• virtual ZOOM meeting ID: 263 591 6003, https://zoom.us/j/2635916003.

If you have a question about this talk, please contact Bingqing Cheng .

When studying glassy materials and supercooled liquids, the disordered molecular structure is important. Unlike crystals, each molecule in a liquid has a slightly different local environment, and these subtle differences can have important implications for material properties. I will present a method [1] for classifying particles into groups (``structural communities’‘) based on their local environments, as characterised by the distances to their neighbours (radial distribution function) or their bond angles. The method is applied to three different binary mixtures, made of spherical particles. This is an unsupervised approach using only structural information; nevertheless the resulting communities are found to be correlated with particles’ dynamical behaviour.

[1] J. Paret, R. L. Jack, and D. Coslovich, J. Chem. Phys. 152, 144502 (2020).

This talk is part of the Machine learning in Physics, Chemistry and Materials discussion group (MLDG) series.

This talk is included in these lists:

• Hanchen DaDaDash
• Lennard-Jones Centre external
• Machine learning in Physics, Chemistry and Materials discussion group (MLDG)
• virtual ZOOM meeting ID: 263 591 6003, https://zoom.us/j/2635916003

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