1. Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
2. Department of Materials Science and Engineering Stanford University Stanford CA 94305 USA
3. Department of Chemistry Northwestern University Evanston IL 60208 USA
4. X‐Ray Science Division Argonne National Laboratory Lemont IL 60439 USA
5. Simpson Querrey Institute Northwestern University Chicago IL 60611 USA
6. Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USA