1. Laboratory
for Atomistic and Molecular Mechanics (LAMM), Department of Civil
and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room 1-239, Cambridge, Massachusetts 02139, United States
2. Center
for Computational Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
3. School
of Engineering and Applied Sciences, Harvard University, 29 Oxford
Street, Cambridge, Massachusetts 02138, United States
4. Kavli
Institute, Harvard University, Cambridge, Massachusetts 02138, United States