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Fingering Instabilities in Dewetting Nanofluids

Pauliac-Vaujour, E; Stannard, A; Martin, CP; Blunt, MO; Notingher, I; Moriarty, P; Vancea, I; Thiele, U


E Pauliac-Vaujour

A Stannard

CP Martin

MO Blunt

I Notingher

P Moriarty

I Vancea

U Thiele


The growth of fingering patterns in dewetting nanofluids (colloidal solutions of thiol-passivated gold nanoparticles) has been followed in real time using contrast-enhanced video microscopy. The fingering instability on which we focus here arises from evaporatively-driven nucleation and growth
a nanoscopically thin "precursor" solvent film behind the macroscopic contact line. We find that well-developed isotropic fingering structures only form for a narrow range of experimental parameters. Numerical simulations, based on a modification of the Monte Carlo approach introduced by Rabani et al. [Nature 426, 271 (2003)], reproduce the patterns we observe experimentally.


Pauliac-Vaujour, E., Stannard, A., Martin, C., Blunt, M., Notingher, I., Moriarty, P., …Thiele, U. (2008). Fingering Instabilities in Dewetting Nanofluids. Physical Review Letters, 100,

Journal Article Type Article
Publication Date May 2, 2008
Deposit Date May 19, 2008
Publicly Available Date May 19, 2008
Journal Physical Review Letters
Print ISSN 0031-9007
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 100
Public URL
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