Imperial College London
Alternate

ProfessorSerafimKalliadasis

Faculty of Engineering, Department of Chemical Engineering

Prof in Engineering Science & Applied Mathematics
 
 
 
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Contact

 

+44 (0)20 7594 1373s.kalliadasis Website

 
 
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Assistant

 

Miss Jessica Baldock +44 (0)20 7594 5699

 
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Location

 

516ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Nold:2015:mmnp/201510407,
author = {Nold, A and Sibley, DN and Goddard, BD and Kalliadasis, S},
doi = {mmnp/201510407},
journal = {Mathematical Modelling of Natural Phenomena},
pages = {111--125},
title = {Nanoscale Fluid Structure of Liquid-solid-vapour Contact Lines for a Wide Range of Contact Angles},
url = {http://dx.doi.org/10.1051/mmnp/201510407},
volume = {10},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We study the nanoscale behaviour of the density of a simple fluid in the vicinity of an equilibrium contact line for a wide range of Young contact angles θY ∈ [ 40°,135° ]. Cuts of the density profile at various positions along the contact line are presented, unravelling the apparent step-wise increase of the film height profile observed in contour plots of the density. The density profile is employed to compute the normal pressure acting on the substrate along the contact line. We observe that for the full range of contact angles, the maximal normal pressure cannot solely be predicted by the curvature of the adsorption film height, but is instead softened – likely by the width of the liquid-vapour interface. Somewhat surprisingly however, the adsorption film height profile can be predicted to a very good accuracy by the Derjaguin-Frumkin disjoining pressure obtained from planar computations, as was first shown in [Nold et al., Phys. Fluids, 26, 072001, 2014] for contact angles θY< 90°, a result which here we show to be valid for the full range of contact angles. This suggests that while two-dimensional effects cannot be neglected for the computation of the normal pressure distribution along the substrate, one-dimensional planar computations of the Derjaguin-Frumkin disjoining pressure are sufficient to accurately predict the adsorption height profile.
AU  - Nold,A
AU  - Sibley,DN
AU  - Goddard,BD
AU  - Kalliadasis,S
DO  - mmnp/201510407
EP  - 125
PY  - 2015///
SN  - 0973-5348
SP  - 111
TI  - Nanoscale Fluid Structure of Liquid-solid-vapour Contact Lines for a Wide Range of Contact Angles
T2  - Mathematical Modelling of Natural Phenomena
UR  - http://dx.doi.org/10.1051/mmnp/201510407
UR  - http://hdl.handle.net/10044/1/26987
VL  - 10
ER  -
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