1. Department of Mechanical Science and Engineering; Beckman Institute for Advanced Science and Technology; University of Illinois at Urbana-Champaign; Urbana IL 61801 USA
2. Department of Materials Science and Engineering; Beckman Institute for Advanced Science and Technology; University of Illinois at Urbana-Champaign; Urbana IL 61801 USA
3. Department of Civil and Environmental Engineering; Beckman Institute for Advanced Science and Technology; University of Illinois at Urbana-Champaign; Urbana IL 61801 USA
4. Aerospace Engineering Beckman Institute for Advanced Science and Technology; University of Illinois at Urbana-Champaign; Urbana IL 61801 USA
5. Beckman Institute for Advanced Science and Technology; University of Illinois at Urbana-Champaign; Urbana IL 61801 USA
6. Department of Chemistry Beckman Institute for Advanced Science and Technology; University of Illinois at Urbana-Champaign; Urbana IL 61801 USA