Fingering Instabilities in Dewetting Nanofluids

Pauliac-Vaujour, E and Stannard, A and Martin, CP and Blunt, MO and Notingher, I and Moriarty, P and Vancea, I and Thiele, U (2008) Fingering Instabilities in Dewetting Nanofluids. Physical Review Letters, 100 . 176102-1-176102-4.

[img] PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (2MB)
[img] PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (103kB)

Abstract

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.

Item Type: Article
Schools/Departments: University of Nottingham UK Campus > Faculty of Science > School of Physics and Astronomy
Related URLs:
URLURL Type
http://www.nottingham.ac.uk/physics/research/nano/publications.htmAuthor
Depositing User: Moriarty, P.J.
Date Deposited: 19 May 2008 13:28
Last Modified: 19 May 2008 13:28
URI: http://eprints.nottingham.ac.uk/id/eprint/903

Actions (Archive Staff Only)

Edit View Edit View