1. Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
2. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
3. Flexterra Inc., 8025 Lamon Avenue, Skokie, Illinois 60077, United States
4. Department of Materials Science and Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
5. Civil and Environmental Engineering Department, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States