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Adv Mater. 2013 Jun 11;25(22):3117-21. doi: 10.1002/adma.201300587. Epub 2013 Apr 30.

Localization of folds and cracks in thin metal films coated on flexible elastomer foams.

Author information

1
Ecole Polytechnique Fédérale de Lausanne (EPFL), Centre for Neuroprosthetics, STI | IMT/IBI | LSBI, CH-1015 Lausanne, Switzerland.

Abstract

Thin metal films coated on soft elastomeric foam substrates exhibit enhanced electromechanical performance. The open-cell foam structure conveys highly anisotropic mechanical properties within the top, thin capping elastomer at the surface of the foam. Upon stretching, large strain fields inducing cracks and folds localize above the foam cells, while the surrounding cell ligaments remain almost strain-free, enabling stable electrical conduction in the metallic coating.

PMID:
23629920
DOI:
10.1002/adma.201300587
[Indexed for MEDLINE]

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