1. Department of Mechanical Engineering, Wayne State University, Detroit, Michigan 40202, United States
2. The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
3. Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
4. Canadian Light Source, 44 Innovation Blvd. ,Saskatoon, Saskatchewan S7N 2 V3, Canada
5. X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
6. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States