Spontaneous Self-Folding in Confined Ultrathin Polymer Gels

Authors

  • Srikanth Singamaneni,

    1. School of Materials Science and Engineering, Georgia Institute of Technology Atlanta, GA 30318 (USA)
    2. School of Polymer, Textile and Fiber Engineering, Georgia Institute of Technology Atlanta, GA 30318 (USA)
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  • Michael E. McConney,

    1. School of Materials Science and Engineering, Georgia Institute of Technology Atlanta, GA 30318 (USA)
    2. School of Polymer, Textile and Fiber Engineering, Georgia Institute of Technology Atlanta, GA 30318 (USA)
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  • Vladimir V. Tsukruk

    Corresponding author
    1. School of Materials Science and Engineering, Georgia Institute of Technology Atlanta, GA 30318 (USA)
    2. School of Polymer, Textile and Fiber Engineering, Georgia Institute of Technology Atlanta, GA 30318 (USA)
    • School of Materials Science and Engineering, Georgia Institute of Technology Atlanta, GA 30318 (USA).
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Abstract

original image

The formation of high-aspect folded structures with uniform feature sizes in responsive gel films are described. The folding patterns observed here in ultrathin films (20–100 nm) are strikingly different compared to the smooth sinusoidal buckling and cusp-shaped singularities observed earlier in relatively thick (a few tens of micrometers to a few millimeters) and stiffer films.

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