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Issue 18, 2010
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Controlled wrinkle formation via bubble inflation strain engineering

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Abstract

We demonstrate herein a novel strategy that combines both strain engineering and geometrical confinement in one system to realize controlled wrinkling. The location, shape and size of air bubbles entrapped in poly(dimethylsiloxane) (PDMS) devices are precisely controlled via a soft lithography technique. During the Au sputtering process, thin PDMS covers are first stretched due to the bubble inflation under negative pressure. The subsequent Au coating results in Au–PDMS bilayer structure. When returned to atmospheric pressure, wrinkles form on the Au–PDMS bilayer. Furthermore, rational design for more complicated wrinkle patterns is possible with the initial development of strain analysis. We believe this strategy could be applicable to a large range of materials and would find applications in flexible electronics and optics design.

Graphical abstract: Controlled wrinkle formation via bubble inflation strain engineering

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Publication details

The article was received on 27 Apr 2010, accepted on 10 Jun 2010 and first published on 09 Aug 2010


Article type: Paper
DOI: 10.1039/C0SM00298D
Citation: Soft Matter, 2010,6, 4580-4584

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    Controlled wrinkle formation via bubble inflation strain engineering

    P. Zhang, D. Yang, Z. Li and H. Ma, Soft Matter, 2010, 6, 4580
    DOI: 10.1039/C0SM00298D

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