Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/16005

Title: Modelling approaches to the dewetting of evaporating thin films of nanoparticle suspensions
Authors: Thiele, Uwe
Vancea, Ioan
Archer, Andrew J.
Robbins, Mark J.
Frastia, Lubor
Stannard, A.
Pauliac-Vaujour, E.
Martin, C.P.
Blunt, M.O.
Moriarty, P.J.
Issue Date: 2009
Publisher: © IOP Publishing Ltd
Citation: THIELE, U. ... et al, 2009. Modelling approaches to the dewetting of evaporating thin films of nanoparticle suspensions. Journal of Physics: Condensed Matter, 21 (26), 264016.
Abstract: We review recent experiments on dewetting thin films of evaporating colloidal nanoparticle suspensions (nanofluids) and discuss several theoretical approaches to describe the ongoing processes including coupled transport and phase changes. These approaches range from microscopic discrete stochastic theories to mesoscopic continuous deterministic descriptions. In particular, we describe (i) a microscopic kinetic Monte Carlo model, (ii) a dynamical density functional theory and (iii) a hydrodynamic thin film model. Models (i) and (ii) are employed to discuss the formation of polygonal networks, spinodal and branched structures resulting from the dewetting of an ultrathin ‘postcursor film’ that remains behind a mesoscopic dewetting front. We highlight, in particular, the presence of a transverse instability in the evaporative dewetting front, which results in highly branched fingering structures. The subtle interplay of decomposition in the film and contact line motion is discussed. Finally, we discuss a simple thin film model (iii) of the hydrodynamics on the mesoscale. We employ coupled evolution equations for the film thickness profile and mean particle concentration. The model is used to discuss the self-pinning and depinning of a contact line related to the ‘coffee-stain’ effect. In the course of the review we discuss the advantages and limitations of the different theories, as well as possible future developments and extensions.
Description: This article was published in the serial, Journal of Physics: Condensed Matter [© IOP Press]. The definitive version is available at: http://dx.doi.org/10.1088/0953-8984/21/26/264016
Sponsor: AJA and MJR gratefully acknowledge RCUK and EPSRC, respectively, for financial support. We acknowledge support by the European Union via the FP6 and FP7 Marie Curie schemes (grants MRTN-CT-2004005728 (PATTERNS) and PITN-GA- 2008-214919 (MULTIFLOW)).
Version: Accepted for publication
DOI: 10.1088/0953-8984/21/26/264016
URI: https://dspace.lboro.ac.uk/2134/16005
Publisher Link: http://dx.doi.org/10.1088/0953-8984/21/26/264016
ISSN: 0953-8984
Appears in Collections:Published Articles (Maths)

Files associated with this item:

File Description SizeFormat
1001.2669v1.pdfSubmitted version2.65 MBAdobe PDFView/Open


SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.