Equilibrium of droplets on a deformable substrate: Influence of disjoining pressure

Ahmed, Gulraiz; Kalinin, Vasily V.; Arjmandi-Tash, Omid; Starov, Victor

Equilibrium of droplets on a deformable substrate: Influence of disjoining pressure

journal contribution

posted on 2017-02-24, 10:01 authored by Gulraiz Ahmed, Vasily V. Kalinin, Omid Arjmandi-Tash, Victor Starov

© 2016 Elsevier B.V.Equilibrium of liquid droplets on soft deformable substrates is investigated. Disjoining pressure action in the vicinity of the apparent three phase contact line is taken into account. It is shown that the combined disjoining and capillary pressure action determine the substrate deformation. A simplified linear disjoining pressure isotherm and simple Winkler's model to account for the substrate deformation are used which allows deducing analytical solutions for both the liquid profile and the substrate deformation. The apparent equilibrium contact angle of the liquid droplet with the deformable substrate is calculated and its dependency on the system parameters is investigated.

Funding

This research was supported by CoWet Marie Curie EU project; COST action MP1106, EU and MAP EVAPORATION project, European Space Agency.

History

School

Aeronautical, Automotive, Chemical and Materials Engineering

Department

Chemical Engineering

Published in

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Citation

AHMED, G. ... et al., 2016. Equilibrium of droplets on a deformable substrate: Influence of disjoining pressure. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 521, pp. 3-12.

Publisher

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2016

Notes

This paper was accepted for publication in the journal Colloids and Surfaces A: Physicochemical and Engineering Aspects and the definitive published version is available at http://dx.doi.org/10.1016/j.colsurfa.2016.06.057