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Download fileModelling the formation of structured deposits at receding contact lines of evaporating solutions and suspensions
journal contribution
posted on 2013-05-17, 13:57 authored by Lubor Frastia, Andrew ArcherAndrew Archer, Uwe ThieleWhen a film of a liquid suspension of nanoparticles or a polymer solution is deposited on a surface, it may dewet from the surface and as the solvent evaporates the solute particles/polymer can be deposited on the surface in regular line patterns. In this paper we explore a hydrodynamic model for the process that is based on a long-wave approximation that predicts the deposition of irregular and regular line patterns. This is due to a self-organised pinning–depinning cycle that resembles a stick–slip motion of the contact line. We present a detailed analysis of how the line pattern properties depend on quantities such as the evaporation rate, the solute concentration, the Péclet number, the chemical potential of the ambient vapour, the disjoining pressure, and the intrinsic viscosity. The results are related to several experiments and to depinning transitions in other soft matter systems.
History
School
- Science
Department
- Mathematical Sciences
Citation
FRASTIA, L., ARCHER, A.J. and THIELE, U., 2012. Modelling the formation of structured deposits at receding contact lines of evaporating solutions and suspensions. Soft Matter, 8 (44), pp. 11363 - 11386.Publisher
© Royal Society of ChemistryVersion
- AM (Accepted Manuscript)
Publication date
2012Notes
This article was published in the journal, Soft Matter [© Royal Society of Chemistry] and the definitive version is available at: http://dx.doi.org/10.1039/C2SM26574EISSN
1744-683XPublisher version
Language
- en