1. Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL 60208, USA
2. Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA
3. Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA
4. Department of Engineering Mechanics, Tsinghua University, Beijing 100084, People’s Republic of China
5. Center for Mechanics and Materials, Tsinghua University, Beijing 100084, People’s Republic of China
6. Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
7. Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
8. Chemistry, Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
9. Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
10. Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA