Gecko-Inspired Directional and Controllable Adhesion

Authors

  • Michael P. Murphy,

    1. Department of Mechanical Engineering, Carnegie Mellon University 5000 Forbes Ave., Pittsburgh, PA 15213 (USA)
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  • Burak Aksak,

    1. Department of Mechanical Engineering, Carnegie Mellon University 5000 Forbes Ave., Pittsburgh, PA 15213 (USA)
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  • Metin Sitti

    Corresponding author
    1. Department of Mechanical Engineering, Carnegie Mellon University 5000 Forbes Ave., Pittsburgh, PA 15213 (USA)
    • Department of Mechanical Engineering, Carnegie Mellon University 5000 Forbes Ave., Pittsburgh, PA 15213 (USA).
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Abstract

original image

Arrays of gecko-inspired angled polymer microfibers with angled mushroom tips adhere with similar strength to gecko subdigital toe-pads in their gripping direction (∼100 kPa) on smooth surfaces (see image), but are easily released in the opposite direction. Control of adhesion in the normal direction is also possible by controlling drag distance during loading.

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