Drop friction on liquid-infused materials.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 28933489.
- Also identified by DOI 10.1039/c7sm01226h.
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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.