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Keywords:

  • microcracks;
  • microswitches;
  • In Situ sensors;
  • carbon nanotubes;
  • interphase
Thumbnail image of graphical abstract

Early detection of material damage can be achieved using a carbon nanotube concentrated interphase between a single glass fiber and polymer resin. Edith Mäder, Shanglin Gao, and co-workers report on page 3392 that by bridging across a micro-crack with the nanotube networks, an exceptional electromechanical switch is fabricated. The switch exhibits “on” and “off” states actuated by strain, temperature, and light.