1. Department of Electrical Engineering, Columbia University, New York, New York 10027, United States
2. Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
3. The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
4. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
5. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
6. Division of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States