1. Schmid College of Science and Technology, Chapman University, Orange, California 92866, United States
2. Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
3. Department of Medical Engineering, California Institute of Technology, Pasadena, California 91125, United States
4. X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States