Rough capillary rise

Panter, Jack R.; Konicek, Andrew R.; King, Mark A.; Jusufi, Arben; Yeganeh, Mohsen S.; Kusumaatmaja, Halim

doi:10.1038/s42005-023-01160-w

Authors

Jack R. Panter

Andrew R. Konicek

Mark A. King

Arben Jusufi

Mohsen S. Yeganeh

Professor Halim Kusumaatmaja halim.kusumaatmaja@durham.ac.uk
Professor

Abstract

Capillary rise within rough structures is a wetting phenomenon that is fundamental to survival in biological organisms, deterioration of our built environment, and performance of numerous innovations, from 3D microfluidics to carbon capture. Here, to accurately predict rough capillary rise, we must couple two wetting phenomena: capillary rise and hemiwicking. Experiments, simulations, and theory demonstrate how this coupling challenges our conventional understanding and intuitions of wetting and roughness. Firstly, the critical contact angle for hemiwicking becomes separation-dependent so that hemiwicking can vanish for even highly wetting liquids. Secondly, the rise heights for perfectly wetting liquids can differ between smooth and rough systems, even with the same 0∘ contact angle. Finally, the raised liquid volumes are substantially increased in rough compared to smooth systems. To explain and predict all rise heights and volumes with quantitative accuracy, we present the Dual-Rise model that is valid for general roughness, liquids, and surface wettabilities.

Citation

Panter, J. R., Konicek, A. R., King, M. A., Jusufi, A., Yeganeh, M. S., & Kusumaatmaja, H. (2023). Rough capillary rise. Communications Physics, 6, Article 44. https://doi.org/10.1038/s42005-023-01160-w

Journal Article Type	Article
Acceptance Date	Feb 27, 2023
Online Publication Date	Mar 11, 2023
Publication Date	2023
Deposit Date	Apr 11, 2023
Publicly Available Date	Apr 11, 2023
Journal	Communications Physics
Electronic ISSN	2399-3650
Publisher	Nature Research
Peer Reviewed	Peer Reviewed
Volume	6
Article Number	44
DOI	https://doi.org/10.1038/s42005-023-01160-w

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