Drop Dynamics on Liquid Infused Surfaces: The Role of the Lubricant Ridge

Sadullah, M.S.; Semprebon, C.; Kusumaatmaja, H.

Abstract

We employ a free energy lattice Boltzmann method to study the dynamics of a ternary fluid system consisting of a liquid drop driven by a body force across a regularly textured substrate, infused by a lubricating liquid. We focus on the case of partial wetting lubricants and observe a rich interplay between contact line pinning and viscous dissipation at the lubricant ridge, which become dominant at large and small apparent angles respectively. Our numerical investigations further demonstrate that the relative importance of viscous dissipation at the lubricant ridge depends on the drop to lubricant viscosity ratio, as well as on the shape of the wetting ridge.

Citation

Sadullah, M., Semprebon, C., & Kusumaatmaja, H. (2018). Drop Dynamics on Liquid Infused Surfaces: The Role of the Lubricant Ridge. Langmuir, 34(27), 8112-8118. https://doi.org/10.1021/acs.langmuir.8b01660

• Journal Article Type: Article
• Acceptance Date: Jun 12, 2018
• Online Publication Date: Jun 12, 2018
• Publication Date: Jul 10, 2018
• Deposit Date: Jun 13, 2018
• Publicly Available Date: Jun 13, 2018
• Journal: Langmuir
• Print ISSN: 0743-7463
• Electronic ISSN: 1520-5827
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 34
• Issue: 27
• Pages: 8112-8118
• DOI: https://doi.org/10.1021/acs.langmuir.8b01660
• Public URL: https://durham-repository.worktribe.com/output/1324482
• Related Public URLs: https://arxiv.org/abs/1803.04040