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Wrinkle formations in axi-symmetrically stretched membranes

Abstract : We study experimentally the main features of wrinkles that form in an initially stretched and flat elastic membrane when subjected to an axi-symmetric traction force at the center. The wavelength and amplitude of the wrinkle pattern are accurately characterized as the membrane tension and the traction forced are varied. We show that wrinkles are the result of a supercritical instability and appear for a well-defined critical traction force that is a function of the membrane tension. Wrinkle length and amplitude increase as the traction force is increased further. By contrast, both quantities decrease as the membrane tension is increased. Calculations based on symmetry arguments and elastic-energy minimization are in good agreement with experiments and provide a simple way to investigate configurations that are difficult to access experimentally. Such problems include wrinkles in elastic nano-films on finite-thickness viscous substrates used in semiconductor technology or in cellular forces detection.
keyword : Substrate Films
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Contributor : Jean-Christophe Géminard Connect in order to contact the contributor
Submitted on : Wednesday, December 19, 2007 - 9:07:44 AM
Last modification on : Friday, November 26, 2021 - 12:06:03 PM
Long-term archiving on: : Sunday, April 11, 2010 - 11:14:54 PM


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  • HAL Id : ensl-00180271, version 1



Jean-Christophe Géminard, Roberto Bernal, Francisco Melo. Wrinkle formations in axi-symmetrically stretched membranes. European Physical Journal E: Soft matter and biological physics, EDP Sciences: EPJ, 2004, 15 (2), pp.117-126. ⟨ensl-00180271⟩



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