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Keywords:

  • Biomimetics;
  • Elastomers;
  • Polymer surfaces;
  • Stimuli-responsive materials;
  • Surface functionalization
Thumbnail image of graphical abstract

A simple, robust, biomimetic responsive surface based on controlled elastic instabilities using an array of microlens shells as a surface geometry is presented. The snap-through transition is dictated by geometry, length-scale, and materials properties, thus the transition time, triggering sensitivity, and magnitude change are highly tunable. Their potential use as a rapidly switchable optical device is illustrated.