### 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 language | English |
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Pages (from-to) | 7669 - 7672 |

Number of pages | 4 |

Journal | Langmuir |

Volume | 16 |

Issue number | 20 |

DOIs | |

Publication status | Published - 2000 |

MoE publication type | A1 Journal article-refereed |

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## Cite this

Makkonen, L. (2000). On the methods to determine surface energies.

*Langmuir*,*16*(20), 7669 - 7672. https://doi.org/10.1021/la990815p