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  4. Young's law and the effects of interfacial energy on the pressure at the solid-fluid interface
 
research article

Young's law and the effects of interfacial energy on the pressure at the solid-fluid interface

Lunati, Ivan  
2007
Physics Of Fluids

In a recent paper [R. Finn, Phys. Fluids 18, 047102 (2006)] the attention has been drawn on the tension component perpendicular to the solid surface that results from Young's law. Considering the problem of a solid sphere floating in zero gravity, it has been argued that this component yields a spurious net vertical force acting on the sphere, which remains unbalanced. Therefore, the validity of Young's law has been questioned in favor of an energy argument. The scope of this Brief Communication is to restate the equivalence between the energy and the force descriptions of the problem. It is shown that there is no contradiction in Young's law if one accounts for the different stress acting on the solid surface in the two fluids. The net force resulting from the latter balances the force resultant associated with the tension component perpendicular to the solid. (C) 2007 American Institute of Physics.

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Type
research article
DOI
10.1063/1.2800040
Web of Science ID

WOS:000251325700056

Author(s)
Lunati, Ivan  
Date Issued

2007

Published in
Physics Of Fluids
Volume

19

Article Number

118105

Subjects

Surface Stress

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
EFLUM  
Available on Infoscience
July 4, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/83463
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