1. Department of Civil and Environmental Engineering, Stanford University, Stanford, California 94305, United States
2. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94205, United States
3. Department of Chemical Engineering, Stanford University, 443 Via Ortega, Room 387, Stanford, California 94305, United States
4. Department of Mechanical Engineering, Temple University, Philadelphia, Pennsylvania 19122, United States