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Patterns, Forces, and Metastable Pathways in Debonding of Elastic Films

Sarkar, J and Shenoy, V and Sharma, A (2004) Patterns, Forces, and Metastable Pathways in Debonding of Elastic Films. In: Physical Review Letters, 93 (1). 018302-1 -018302-4.

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This Letter resolves several intriguing and fundamental aspects of debonding at soft interfaces, including the formation and persistence of regularly arranged nanocavities and bridges, "adhesion-debonding hysteresis," and vastly lower adhesive strengths compared to the absence of pattern formation. The analysis shows the hysteresis to be caused by an energy barrier that separates the metastable patterned configuration during withdrawal, and the debonded state. The metastable morphological pathways involving cavitation and peeling of contact zones engender substantially lower debonding forces.

Item Type: Journal Article
Publication: Physical Review Letters
Publisher: The American Physical Society.
Additional Information: Copyright of this article belongs to The American Physical Society.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 19 Dec 2008 11:40
Last Modified: 19 Sep 2010 04:55
URI: http://eprints.iisc.ac.in/id/eprint/17190

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