1. Department
of Chemical Engineering, Stanford University, Stanford, California 94305, United States
2. National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
3. Stanford
Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
4. Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing, 210093, People’s Republic of China
5. Corning Incorporated, Corning, New York 14831, United States