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Issue 48, 2015
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Modelling the superspreading of surfactant-laden droplets with computer simulation

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Abstract

The surfactant-driven superspreading of droplets on hydrophobic substrates is considered. A key element of the superspreading mechanism is the adsorption of surfactant molecules from the liquid–vapour interface onto the substrate through the contact line, which must be coordinated with the replenishment of interfaces with surfactant from the interior of the droplet. We use molecular dynamics simulations with coarse-grained force fields to provide a detailed structural description of the droplet shape and surfactant dynamics during the superspreading process. We also provide a simple method for accurate estimation of the contact angle subtended by the droplets at the contact line.

Graphical abstract: Modelling the superspreading of surfactant-laden droplets with computer simulation

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Article information


Submitted
20 Aug 2015
Accepted
26 Oct 2015
First published
26 Oct 2015

Soft Matter, 2015,11, 9254-9261
Article type
Paper
Author version available

Modelling the superspreading of surfactant-laden droplets with computer simulation

P. E. Theodorakis, E. A. Müller, R. V. Craster and O. K. Matar, Soft Matter, 2015, 11, 9254
DOI: 10.1039/C5SM02090E

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