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Crystals 2017, 7(11), 326; doi:10.3390/cryst7110326

Formation of Metastable Crystals from Supercooled, Supersaturated, and Supercompressed Liquids: Role of Crystal-Liquid Interfacial Free Energy

Korea Research Institute of Standards and Science, Daejon 305-340, Korea
Received: 28 July 2017 / Revised: 19 October 2017 / Accepted: 26 October 2017 / Published: 29 October 2017
(This article belongs to the Special Issue Crystal Formation from Metastable Liquids)
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Abstract

The formation mechanism of metastable crystals from metastable liquids still remains elusive, although controlling the metastability of crystals and liquids already plays a crucial role in designing new materials in physics, chemistry, biology, and materials science. This review article describes how metastable phases can be obtained by controlling temperature, concentration, and pressure. In particular, I show the role of crystal-liquid interfacial free energy in the formation of metastable crystals from metastable liquids at a given driving force. In a microscopic viewpoint, local structure similarity between the metastable crystals and liquid determines the crystal-liquid interfacial free energy, and thus the nucleation barrier for the metastable crystals. The effect of the interfacial free energy on the formation of metastable crystals from supercooled, supersaturated, and supercompressed liquids will be demonstrated with metallic liquids, aqueous solutions, and water. View Full-Text
Keywords: Metastable crystals; Metastable liquids; Crystal-liquid interfacial free energy; Local orders; Nucleation; Supercooling; Supersaturation; Supersaturation Metastable crystals; Metastable liquids; Crystal-liquid interfacial free energy; Local orders; Nucleation; Supercooling; Supersaturation; Supersaturation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lee, G.W. Formation of Metastable Crystals from Supercooled, Supersaturated, and Supercompressed Liquids: Role of Crystal-Liquid Interfacial Free Energy. Crystals 2017, 7, 326.

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