The shape of telephone cord blisters

Formation of telephone cord blisters as a result of buckling delamination is widely observed in many compressed film-substrate systems. Here we report a universal morphological feature of such blisters characterized by their sequential sectional profiles exhibiting a butterfly shape using atomic for...

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Bibliographic Details
Published in:Nature communications 2017-01, Vol.8 (1), p.14138-14138, Article 14138
Main Authors: Ni, Yong, Yu, Senjiang, Jiang, Hongyuan, He, Linghui
Format: Article
Language:English
Subjects:
639/166/988
639/766/530/2803
Glass substrates
Humanities and Social Sciences
Microscopy
Morphology
multidisciplinary
Science
Science (multidisciplinary)
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Summary:Formation of telephone cord blisters as a result of buckling delamination is widely observed in many compressed film-substrate systems. Here we report a universal morphological feature of such blisters characterized by their sequential sectional profiles exhibiting a butterfly shape using atomic force microscopy. Two kinds of buckle morphologies, light and heavy telephone cord blisters, are observed and differentiated by measurable geometrical parameters. Based on the Föppl-von Kármán plate theory, the observed three-dimensional features of the telephone cord blister are predicted by the proposed approximate analytical model and simulation. The latter further replicates growth and coalescence of the telephone cord into complex buckling delamination patterns observed in the experiment. Telephone cord blisters constitute a well-known example of patterns generated following buckling in thin films. Here the authors develop an analytical approach that can model the sectional height profiles along the blisters that they measure experimentally and simulate numerically.
ISSN:2041-1723
2041-1723
DOI:10.1038/ncomms14138