1. Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
2. School of Architecture and Planning, Media Lab, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
3. Laboratory for Atomistic and Molecular Mechanics (LAMM), Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
4. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
5. Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
6. Center for Computational Science and Engineering, Schwarzman College of Computing, Cambridge, Massachusetts, USA.