Issue 39, 2017

Drop friction on liquid-infused materials

Abstract

We discuss in this paper the nature of the friction generated as a drop glides on a textured material infused by another liquid. Different regimes are found, depending on the viscosities of both liquids. While a viscous drop simply obeys a Stokes-type friction, the force opposing a drop moving on a viscous substrate becomes non-linear in velocity. A liquid on an infused material is surrounded by a meniscus, and this specific feature is proposed to be responsible for the special frictions observed on both adhesive and non-adhesive substrates.

Graphical abstract: Drop friction on liquid-infused materials

Supplementary files

Article information

Article type
Paper
Submitted
21 Jun 2017
Accepted
04 Sep 2017
First published
08 Sep 2017

Soft Matter, 2017,13, 6981-6987

Drop friction on liquid-infused materials

A. Keiser, L. Keiser, C. Clanet and D. Quéré, Soft Matter, 2017, 13, 6981 DOI: 10.1039/C7SM01226H

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