[1] Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA
[2] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA
[3] Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China
[4] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 119260, Singapore
[5] Inst High Performance Comp, Singapore 138632, Singapore
[6] Samsung Adv Inst Technol, Yongin 449712, Gyeonggi Do, South Korea
[7] Univ Miami, Dept Mech & Aerosp Engn, Coral Gables, FL 33146 USA
[8] Univ Illinois, Dept Chem, Urbana, IL 61801 USA
[9] Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA
[10] Univ Illinois, Beckman Inst, Dept Mat Sci, Urbana, IL 61801 USA
[11] Univ Illinois, Beckman Inst, Dept Engn, Urbana, IL 61801 USA
[12] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA