Connecting glass-forming ability of binary mixtures of soft particles to equilibrium melting temperatures

Yunhuan Nie, Jun Liu, Jialing Guo and Ning Xu ()
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Yunhuan Nie: University of Science and Technology of China
Jun Liu: University of Science and Technology of China
Jialing Guo: University of Science and Technology of China
Ning Xu: University of Science and Technology of China

Nature Communications, 2020, vol. 11, issue 1, 1-10

Abstract: Abstract The glass-forming ability is an important material property for manufacturing glasses and understanding the long-standing glass transition problem. Because of the nonequilibrium nature, it is difficult to develop the theory for it. Here we report that the glass-forming ability of binary mixtures of soft particles is related to the equilibrium melting temperatures. Due to the distinction in particle size or stiffness, the two components in a mixture effectively feel different melting temperatures, leading to a melting temperature gap. By varying the particle size, stiffness, and composition over a wide range of pressures, we establish a comprehensive picture for the glass-forming ability, based on our finding of the direct link between the glass-forming ability and the melting temperature gap. Our study reveals and explains the pressure and interaction dependence of the glass-forming ability of model glass-formers, and suggests strategies to optimize the glass-forming ability via the manipulation of particle interactions.

Date: 2020
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DOI: 10.1038/s41467-020-16986-z

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