Acknowledgment

We gratefully acknowledge the support of this research by the Air Force Office of Scientific Research (AFOSR) through the Center of Excellence in Self-Healing Regeneration and Structural Remodeling, Grant #FA9550-16-1-0017, Mechanics of Multifunctional Materials Program, program manager Dr. Les Lee.

We also acknowledge the Imaging Technology Group  at the Beckman Institute for their assistance with graphics and imaging.