Issue
EPL
Volume 85, Number 1, January 2009
Article Number 16002
Number of page(s) 4
Section Condensed Matter: Structural, Mechanical and Thermal Properties
DOI http://dx.doi.org/10.1209/0295-5075/85/16002
Published online 19 January 2009
EPL, 85 (2009) 16002
DOI: 10.1209/0295-5075/85/16002

Non-linear elasticity of a liquid contact line

A. Checco

Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory Upton, NY 11973, USA

checco@bnl.gov

received 21 October 2008; accepted in final form 5 December 2008; published January 2009
published online 19 January 2009

Abstract
By using energy minimization computations we study the distortion of a wetting contact line pinned on a single defect. We find that the elastic restoring force of the line depends non-linearly on the amplitude of the distortion and we estimate the anharmonic corrections to the linear elastic model. These results suggest the importance of non-linear effects in the problem of contact line pinning.

PACS
68.08.Bc - Wetting.
68.03.Cd - Surface tension and related phenomena.

© EPLA 2009