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HomeMaterials Science ForumMaterials Science Forum Vols. 745-746Instability and Pattern Formation of Thin Liquid...

Instability and Pattern Formation of Thin Liquid Films Sandwiched between Soft Elastomer Layers

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Abstract:

The surface instability of trilayer films consisting of a fluid layer sandwiched in between the two thin elastomer capping layers was studied. The solid-liquid-solid sandwiched films will form well-defined periodic surface buckling spontaneously. In the present study, the flow of the sandwiched liquid layer was approximated by the theory of lubrication. The elastic capping films was modeled with the nonlinear theory of a thin plate. A linear stability analysis identified the growth rate and the critical wave number of the surface undulation of trilayer films. The analysis showed that applied deformation in the capping layers regulated the surface buckling and resulted in well-defined periodic surface corrugation with tunable wavelength. The result of this study may provide a mechanism to control the morphology of the films in a mechanical way.

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Advances in Functional and Electronic Materials

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Periodical:

Materials Science Forum (Volumes 745-746)

Pages:

417-423

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.745-746.417

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Online since:

February 2013

Authors:

Ling Qiao, Fu Ying Tan

Keywords:

Instability, Morphology of Films, Pattern Formation, Pattern Selection, Static Buckling

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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