Abstract
Freezing of soft spheres in slit nanopores is investigated using Grand canonical Monte Carlo simulations. The pores are in equilibrium with a liquid located close to the liquid–solid coexistence region in the bulk Lennard-Jones phase diagram. In addition to layering, the confined fluid is found to possess in-plane order, leading to the formation of frozen phases which give rise to a sequence of solid–solid transformations as the pore width is varied. Transformations between n layered triangular to n+1 layered square lattices and between n layered square to triangular lattices, are observed for n=1, 2, 3, and 4. The transition from triangular to square lattices occurs via an intermediate buckled phase which is characterized by increased out-of-plane motion, while maintaining in-plane triangular order. Buckling was found to decrease with increasing number of layers. The transition between square to triangular lattices at a fixed number of layers is accompanied by a lowering of the solvation force, resulting in a doublet in the solvation force maxima. Influence of fluid–wall interactions on the nature of the frozen phases are studied by comparing the structures formed with a 10-4-3 and 10-4 fluid–wall potential. The solid structures are classified based on their closest 3D counterparts.
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Dates
Type | When |
---|---|
Created | 22 years, 11 months ago (Aug. 30, 2002, 1:02 p.m.) |
Deposited | 1 year, 6 months ago (Feb. 10, 2024, 12:46 p.m.) |
Indexed | 1 month, 2 weeks ago (July 5, 2025, 7:22 a.m.) |
Issued | 22 years, 11 months ago (Sept. 15, 2002) |
Published | 22 years, 11 months ago (Sept. 15, 2002) |
Published Print | 22 years, 11 months ago (Sept. 15, 2002) |
@article{Ayappa_2002, title={The structure of frozen phases in slit nanopores: A grand canonical Monte Carlo study}, volume={117}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1501120}, DOI={10.1063/1.1501120}, number={11}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Ayappa, K. G. and Ghatak, Chandana}, year={2002}, month=sep, pages={5373–5383} }