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Keywords:

  • yellow fluorescent protein;
  • mechanophore;
  • impact damage;
  • polymer-protein hybrid material;
  • self-sensing fiber-reinforced composite
Thumbnail image of graphical abstract

A fluorescent protein is implemented by Nico Bruns and co-workers on page 2701 as a force-responsive molecular sensor at the fiber-resin interface in glass-fiber reinforced composites. Micrometer-scale damage, such as fiber fractures and fiber matrix debonding, is reported by loss of yellow fluorescence in the damaged areas due to a force-induced unfolding of the protein.