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25 Sep 2006

Volume 89, Issue 13, Articles (13xxxx)

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Appl. Phys. Lett. 89, 131108 (2006); http://dx.doi.org/10.1063/1.2356892 (3 pages)

Paul E. Barclay, Kartik Srinivasan, Oskar Painter, Benjamin Lev, and Hideo Mabuchi
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Treelike branched structures formed in dewetting thin films of a binary solution

L. V. Govor, G. Reiter, G. H. Bauer, and J. Parisi

Appl. Phys. Lett. 89, 133126 (2006); http://dx.doi.org/10.1063/1.2354004 (3 pages) | Cited 2 times

Online Publication Date: 29 September 2006

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The authors present evidence for treelike patterns which developed during solvent evaporation from a phase separated bilayer resulting from a binary polymer solution spin coated onto a solid substrate. Initially, a bilayer structure containing a poly(isobutyl methacrylate) (BMA) solution layer on top of a nitrocellulose (NC) solution layer. During subsequent solvent evaporation, the top BMA solution layer becomes unstable and transforms into short ridges. Finally, solvent evaporation from the NC solution layer connects the BMA ridges to treelike patterns.
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61.25.H- Macromolecular and polymers solutions; polymer melts
68.08.Bc Wetting
64.75.-g Phase equilibria
68.15.+e Liquid thin films
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