Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 21, Issue 22, Pages 4320-4326Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201101553
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Funding
- Air Force Office of Scientific Research Multidisciplinary University Research Initiative [F49550-05-1-0346]
- NSF
- Dow Chemical [C7391]
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Self-healing materials with dual interpenetrating microvascular networks enable two-part healing chemistries and repeated healing of damage in a localized region.1 However, due to slow healing kinetics, multiple days are required between damage events to recover mechanical performance under ambient conditions. By directly writing a third interdigitated microvascular network within these epoxy coating/substrate architectures to enable in situ thermal regulation, the characteristic healing time is reduced by an order of magnitude. Specifically, this third network provides a conduit for circulating a temperature-controlled fluid that rapidly heats the locally damaged region leading to a sharp reduction in the time required for mechanical property restoration.
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