Autonomous Indication of Mechanical Damage in Polymeric Coatings

Wenle Li, Christopher C. Matthews, Ke Yang, Michael T. Odarczenko, Scott R. White, Nancy R. Sottos

Research output: Contribution to journalArticlepeer-review


High-resolution in situ autonomous visual indication of mechanical damage is achieved through a microcapsule-based polymeric material system. Upon mechanical damage, ruptured microcapsules release a liquid indicator molecule. A sharp color change from light yellow to bright red is triggered when the liberated indicator 2′,7′-dichlorofluorescein reacts with the polymeric coating matrix.

Original languageEnglish (US)
Pages (from-to)2189-2194
Number of pages6
JournalAdvanced Materials
Issue number11
StatePublished - Mar 16 2016


  • damage detection
  • microcapsules
  • self-reporting
  • smart coatings
  • visual indications

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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