机构:
Univ Penn, Philadelphia, PA 19104 USA
Univ Penn, Dept Mech Engn & Appl Mech, Philadelphia, PA 19104 USA
Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USAUniv Penn, Philadelphia, PA 19104 USA