Forced versus spontaneous spreading of liquids

A. Mohammad Karim; Stephen H Davis; H. P. Kavehpour

doi:10.1021/acs.langmuir.6b00747

Forced versus spontaneous spreading of liquids

A. Mohammad Karim, Stephen H Davis, H. P. Kavehpour^*

^*Corresponding author for this work

Engineering Sciences and Applied Mathematics

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

24 Scopus citations

Abstract

Two sets of experiments are performed, one for the free spreading of a liquid drop on a glass substrate and the other for the forced motion of a glass plate through a gas-liquid interface. The measured macroscopic advancing contact angle, θ_A, versus the contact line speed, U, differ markedly between the two configurations. The hydrodynamic theory (HDT) and the molecular kinetic theory (MKT) are shown to apply separately to the two systems. This distinction has not been previously noted. Rules of thumb are given that for an experimentalist involve a priori knowledge of the expected behavior.

Original language	English (US)
Pages (from-to)	10153-10158
Number of pages	6
Journal	Langmuir
Volume	32
Issue number	40
DOIs	https://doi.org/10.1021/acs.langmuir.6b00747
State	Published - Oct 11 2016

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/acs.langmuir.6b00747

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AU - Kavehpour, H. P.

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AB - Two sets of experiments are performed, one for the free spreading of a liquid drop on a glass substrate and the other for the forced motion of a glass plate through a gas-liquid interface. The measured macroscopic advancing contact angle, θA, versus the contact line speed, U, differ markedly between the two configurations. The hydrodynamic theory (HDT) and the molecular kinetic theory (MKT) are shown to apply separately to the two systems. This distinction has not been previously noted. Rules of thumb are given that for an experimentalist involve a priori knowledge of the expected behavior.

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Forced versus spontaneous spreading of liquids

Abstract

ASJC Scopus subject areas

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