Jack Law jack.o.law@durham.ac.uk
Academic Visitor
Nucleation on a sphere: the roles of curvature, confinement and ensemble
Law, Jack O.; Wong, Alex G.; Kusumaatmaja, Halim; Miller, Mark A.
Authors
Alex G. Wong
Halim Kusumaatmaja halim.kusumaatmaja@durham.ac.uk
Visiting Professor
Dr Mark Miller m.a.miller@durham.ac.uk
Associate Professor
Abstract
By combining Monte Carlo simulations and analytical models, we demonstrate and explain how the gas-to-liquid phase transition of colloidal systems confined to a spherical surface depends on the curvature and size of the surface, and on the choice of thermodynamic ensemble. We find that the geometry of the surface affects the shape of the free energy profile and the size of the critical nucleus by altering the perimeter–area ratio of isotropic clusters. Confinement to a smaller spherical surface results in both a lower nucleation barrier and a smaller critical nucleus size. Furthermore, the liquid domain does not grow indefinitely on a sphere. Saturation of the liquid density in the grand canonical ensemble and the depletion of the gas phase in the canonical ensemble lead to a minimum in the free energy profile, with a sharp increase in free energy for additional growth beyond this minimum.
Citation
Law, J. O., Wong, A. G., Kusumaatmaja, H., & Miller, M. A. (2018). Nucleation on a sphere: the roles of curvature, confinement and ensemble. Molecular Physics, 116(21-22), 3008-3019. https://doi.org/10.1080/00268976.2018.1483041
Journal Article Type | Article |
---|---|
Acceptance Date | May 15, 2018 |
Online Publication Date | Jun 10, 2018 |
Publication Date | Jun 10, 2018 |
Deposit Date | May 30, 2018 |
Publicly Available Date | May 31, 2018 |
Journal | Molecular Physics |
Print ISSN | 0026-8976 |
Electronic ISSN | 1362-3028 |
Publisher | Taylor and Francis Group |
Peer Reviewed | Peer Reviewed |
Volume | 116 |
Issue | 21-22 |
Pages | 3008-3019 |
DOI | https://doi.org/10.1080/00268976.2018.1483041 |
Public URL | https://durham-repository.worktribe.com/output/1358013 |
Related Public URLs | https://arxiv.org/abs/1805.12020 |
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Copyright Statement
This is an Accepted Manuscript of an article published by Taylor & Francis in Molecular Physics on 10 Jun 2018, available online: http://www.tandfonline.com/10.1080/00268976.2018.1483041.
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