1. Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
2. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
3. Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
4. Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
5. Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
6. California NanoSystems Institute (CNSI), University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States