Contact angles of rotating sessile droplets

Edward Bormashenko

doi:10.1016/j.colsurfa.2013.04.041

Contact angles of rotating sessile droplets

Edward Bormashenko

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

The paper proposes a general framework allowing the analysis of wetting problems in the situation where a sessile drop is placed on a rotating substrate. Wetting of ideal, rough and chemically heterogeneous surfaces by sessile rotating droplets is treated. The effect of the line tension is considered. The problem of wetting is discussed in the framework of a variational approach. It is demonstrated that the Young, Wenzel and Cassie equilibrium contact angles are independent of the rotation of a substrate as well as external fields.

Original language	English
Pages (from-to)	38-41
Number of pages	4
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	432
DOIs	https://doi.org/10.1016/j.colsurfa.2013.04.041
State	Published - 5 Sep 2013

Keywords

Cassie and Wenzel models
Contact angle
External fields
Rotating substrate
Transversality conditions
Wetting

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10.1016/j.colsurfa.2013.04.041

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AB - The paper proposes a general framework allowing the analysis of wetting problems in the situation where a sessile drop is placed on a rotating substrate. Wetting of ideal, rough and chemically heterogeneous surfaces by sessile rotating droplets is treated. The effect of the line tension is considered. The problem of wetting is discussed in the framework of a variational approach. It is demonstrated that the Young, Wenzel and Cassie equilibrium contact angles are independent of the rotation of a substrate as well as external fields.

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KW - Contact angle

KW - External fields

KW - Rotating substrate

KW - Transversality conditions

KW - Wetting

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JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

ER -

Contact angles of rotating sessile droplets

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Keywords

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