Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 346, Issue 2, Pages 483-485Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2010.03.044
Keywords
Two immiscible liquid drops; Young-Dupre equation; Thermodynamics
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In this study a form of Young-Dupre equation has been derived for the case of a drop of a liquid(1) completely encapsulated by another drop of liquid(2) and both are resting on a solid substrate. The two liquids considered here are immiscible homogeneous phases. The derivation is mainly based on the powerful thermodynamics formalism with the help of geometrical considerations. The derivation yields two equations describing the equilibrium conditions of the two drops considered. In addition the equilibrium conditions for the four-phase merging along a single contact line is derived. The results show the advantages of thermodynamic formalism over mechanical considerations. (C) 2010 Elsevier Inc. All rights reserved.
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