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Wrinkling-to-delamination transition in thin polymer films on compliant substrates

Published

Author(s)

Adam J. Nolte, Jun Y. Chung, Chelsea S. Davis, Christopher Stafford

Abstract

Compressing a thin, stiff film attached to a thick, compliant substrate can lead to a number of different modes of mechanical deformation depending upon the material properties of the system. In this article we explore direct transitions from surface wrinkling to buckle delamination, and provide a theoretical framework for understanding the conditions under which such transitions take place, as well as the resulting dimensions of the wrinkling-induced delamination. A key conclusion of this work is that the width of the delamination blister formed from a wrinkled film is relatively strain-independent, suggesting that delaminations can be used in such systems to measure the adhesion energy at the film-substrate interface. In addition, we demonstrate how the length and width of delaminations can be tailored through straightforward control of the substrate and film properties in the system, illustrating how wrinkling delaminations can be used for both thin film metrology and patterning applications.
Citation
Soft Matter
Volume
13
Issue
43

Keywords

wrinkling, polymer, thin films, delamination, adhesion

Citation

Nolte, A. , Chung, J. , Davis, C. and Stafford, C. (2017), Wrinkling-to-delamination transition in thin polymer films on compliant substrates, Soft Matter, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=924780 (Accessed July 13, 2024)

Issues

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Created October 8, 2017, Updated October 12, 2021