Variation along liquid isomorphs of the driving force for crystallization
We investigate the variation of the driving force for crystallization of a supercooled liquid along isomorphs, curves along which structure and dynamics are invariant. The variation is weak, and can be predicted accurately for the Lennard-Jones fluid using a recently developed formalism and data...
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| Format: | Article |
| Language: | English |
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SciPost
2017-06-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.2.3.022 |
| Summary: | We investigate the variation of the driving force for crystallization of a
supercooled liquid along isomorphs, curves along which structure and dynamics
are invariant. The variation is weak, and can be predicted accurately for the
Lennard-Jones fluid using a recently developed formalism and data at a
reference temperature. More general analysis allows interpretation of
experimental data for molecular liquids such as dimethyl phthalate and
indomethacin, and suggests that the isomorph scaling exponent $\gamma$ in these
cases is an increasing function of density, although this cannot be seen in
measurements of viscosity or relaxation time. |
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| ISSN: | 2542-4653 |