On the methods to determine surface energies

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Abstract

There is a prevailing dispute on methods to determine surface energies of surfaces involving a solid. The most widely used methods are the surface component (STC) theory and the equation of state (EQS) approach. Several versions of these basic theories have been developed, and their predictions for various systems differ but are of the same order of magnitude. However, the solid/liquid surface energies determined by the methods based on the effect of interface curvature on the equilibrium phase change temperature, as described by the Gibbs−Thomson (G−T) equation, are 2 orders of magnitude higher than those determined by the STC and the EQS. This controversy is addressed here by critically analyzing both the thermodynamic and mechanical derivations of the G−T equation. It is concluded that none of the arguments recently presented against the use of the G−T equation, to explain the discrepancy, appear to be valid. Consequently, it appears that both the STC theory and the EQS approach may be incorrect.
Original languageEnglish
Pages (from-to)7669 - 7672
Number of pages4
JournalLangmuir
Volume16
Issue number20
DOIs
Publication statusPublished - 2000
MoE publication typeA1 Journal article-refereed

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Equations of state
Interfacial energy
surface energy
equations of state
liquid surfaces
Phase equilibria
derivation
curvature
Thermodynamics
thermodynamics
Liquids
predictions
Temperature
temperature

Cite this

Makkonen, Lasse. / On the methods to determine surface energies. In: Langmuir. 2000 ; Vol. 16, No. 20. pp. 7669 - 7672.
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On the methods to determine surface energies. / Makkonen, Lasse.

In: Langmuir, Vol. 16, No. 20, 2000, p. 7669 - 7672.

Research output: Contribution to journalArticleScientificpeer-review

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