Wetting of a solid surface by active matter

Neta, P.D., Tasinkevych, M. ORCID: 0000-0001-6689-1844, Telo da Gama, M.M. and Dias, C.S., 2021. Wetting of a solid surface by active matter. Soft Matter, 17 (9), pp. 2468-2478. ISSN 1744-683X

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A lattice model is used to study repulsive active particles at a planar surface. A rejection-free Kinetic Monte Carlo method is employed to characterize the wetting behaviour. The model predicts a motility-induced phase separation of active particles, and the bulk coexistence of dense liquid-like and dilute vapour-like steady states is determined. An “ensemble”, with a varying number of particles, analogous to a grand canonical ensemble in equilibrium, is introduced. The formation and growth of the liquid film between the solid surface and the vapour phase is investigated. At constant activity, as the system is brought towards coexistence from the vapour side, the thickness of the adsorbed film exhibits a divergent behaviour regardless of the activity. This suggests a complete wetting scenario along the full coexistence curve.

Item Type: Journal article
Publication Title: Soft Matter
Creators: Neta, P.D., Tasinkevych, M., Telo da Gama, M.M. and Dias, C.S.
Publisher: Royal Society of Chemistry (RSC)
Date: 7 March 2021
Volume: 17
Number: 9
ISSN: 1744-683X
Divisions: Schools > School of Science and Technology
Record created by: Laura Ward
Date Added: 18 Jan 2023 14:10
Last Modified: 18 Jan 2023 14:10
URI: https://irep.ntu.ac.uk/id/eprint/47926

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