K. Mougin and H. Haidara 2003 Europhys. Lett. 61 660 doi:10.1209/epl/i2003-00122-9
K. Mougin and H. Haidara
Show affiliationsWe report new experimental results on the dewetting of thin liquid films on nanoscale-structured binary surfaces made of antagonist wetted (w), non-wetted (nw) molecular domains. Our experimental results and computed Hamaker constant showed that long-range van der Waals forces rather act to stabilize the interface in both systems. Though no simple length-scale correlation was found between the dewetting hole densities and the underlying nanoscale surface structures, our results strongly suggest the heterogeneous nucleation as the dominant dewetting mode in these systems. These hole densities and dewetting morphologies were found, in other respects, to critically depend on the area fraction of the w (nw) domains at the heterogeneous substrates.
Issue 5 (March 2003)
Received 24 May 2002, accepted for publication 17 December 2002, in final form 17 December 2002
K. Mougin and H. Haidara 2003 Europhys. Lett. 61 660
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