Preprint Article Version 1 This version is not peer-reviewed

Entropy Contribution to the Line Tension: Insights from Polymer Physics, Water String Theory and the Three-Phase Tension

Version 1 : Received: 3 August 2018 / Approved: 3 August 2018 / Online: 3 August 2018 (20:28:41 CEST)

A peer-reviewed article of this Preprint also exists.

Bormashenko, E. Entropy Contribution to the Line Tension: Insights from Polymer Physics, Water String Theory, and the Three-Phase Tension. Entropy 2018, 20, 712. Bormashenko, E. Entropy Contribution to the Line Tension: Insights from Polymer Physics, Water String Theory, and the Three-Phase Tension. Entropy 2018, 20, 712.

Journal reference: Entropy 2018, 20, 712
DOI: 10.3390/e20090712

Abstract

The notion of the three-phase (line) tension remains one of the most disputable notions in the surface science. A very broad range of its values has been reported. Experts even do not agree on the sign of the line tension. The polymer-chain-like model of the three-phase (triple) line enables the rough estimation of the entropic input into the value of the line tension, estimated as Γ_en≅(k_B T)/d_m ≅〖10〗^(-11) N, where d_m is the diameter of the liquid molecule. The introducing of the polymer-chain-like model of the triple line is justified by the “water string” model of the liquid state, predicting strong orientation effects for liquid molecules located in the vicinity of hydrophobic moieties. The estimated value of the entropic input into the line tension is close to experimental findings, reported by various groups.

Subject Areas

line tension; entropic contribution; entropic force; orientation effect; hydrophobic substrate.

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