Volume 113, Number 4, February 2016
|Number of page(s)||6|
|Section||Atomic, Molecular and Optical Physics|
|Published online||16 March 2016|
Effects of van der Waals forces and salt ions on the growth of water films on ice and the detachment of CO2 bubbles
1 Department of Materials Science and Engineering, Royal Institute of Technology - SE-100 44 Stockholm, Sweden
2 Programa de Pós-graduação em Engenharia Química, Universidade do Estado do Rio de Janeiro CEP 20550-013, Rio de Janeiro RJ, Brazil
3 Centre for Materials Science and Nanotechnology, University of Oslo - P. O. Box 1048 Blindern, NO-0316 Oslo, Norway
4 School of Engineering and IT, Murdoch University - 90 South St, Murdoch, WA 6150, Australia
5 Physikalisches Institut, Albert-Ludwigs-Universität Freiburg - Hermann-Herder-Str. 3, D-79104 Freiburg, Germany
6 Freiburg Institute for Advanced Studies, Albert-Ludwigs-Universität Freiburg - Albertstraße 19, D-79104 Freiburg, Germany
7 Department of Physics, University of Oslo - P. O. Box 1048 Blindern, NO-0316 Oslo, Norway
Received: 14 October 2015
Accepted: 1 March 2016
We study the effect of salts on the thickness of wetting films on melting ice and interactions acting on CO2 bubble near ice-water and vapor-water interfaces. Governing mechanisms are the Lifshitz and the double-layer interactions in the respective three-layer geometries. We demonstrate that the latter depend on the Casimir-Polder interaction of the salt ions dissolved in water with the respective ice, vapor and CO2 interfaces, as calculated using different models for their effective polarizability in water. Significant variation in the predicted thickness of the equilibrium water film is observed for different salt ions and when using different models for the ions' polarizabilities. We find that CO2 bubbles are attracted towards the ice-water interface and repelled from the vapor-water interface.
PACS: 34.20.Cf – Interatomic potentials and forces / 87.15.A- – Theory, modeling, and computer simulation
© EPLA, 2016
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